Also for: Sierra 2017, Sierra denali 2017. Choose top quality brands AC Delco, GPD, UAC. When this circuit goes OPEN it signals the ecm to turn on the engine fan. In order for the computer to provide ground, it must receive a good signal from the low pressure switch, high pressure switch, and evaporator temperature sensor. It is mounted in the low pressure side of the AC system and its purpose is to detect the flow of refrigerant in the system by measuring the pressure. But first things first, compressor is not running. Can some one please tell me what's wrong and how to fix it?. The AC clutch would kick in and out repeatedly. (do not get one that is incorporated into an A/C recharge hose). High Quality Genuine & OEM BMW parts. the switch will activate allowing pressure from the high pressure side of the AC system to enter the low side and equalize. Here's what I've done. Had engine at idle and hit the AC switch, looked under hood and clutch is not engaging. Anything that causes the pressure in the system to exceed a limit set by the manufacturer would cause the high pressure switch to turn the unit off. controls unit is good. The ancient ideogram of a ring with an arrow bisecting at 1 o'clock was chosen as the company logo, a nod towards the company's long term involvement with iron alloys. a/c low pressure switch question Does this switch on the low pressure line have a different name than just a low pressure side switch? Maybe its' just living in a small town but none of the parts houses have an a/c swtich with that description. About Genuine Volvo. If you have gauges you can more than likely pay attention to when it cuts out and determine if its within the specs of the switch. com FREE DELIVERY possible on eligible purchases. It's the low pressure switch. I jumped the pressure switch and the clutch engages. Low side pressure can vary from 30-55psi, High from 150-325, both depending on ambient temp. Air Conditioning Pressure Switches Reliable high- and low-pressure protection and fan trigger control. Hi-Pressure Switch (blue), OEM# 2724727 Chevrolet/GMC, 1997 1994, C/K Ser, Compressor Hi-Pressure Switch (Orange 2 Term. I discovered that there is increased pressure in the system or the there is a problem in the high -and- low pressure sensor and switch but i buy the low switch from the dealer but the high pressure sensor is not available. By the way, my online database is showing that the 97's high pressure cut out switch is located on the compressor and the low pressure switch is on the accumulator. When ac is switched on, ac light comes on and fans spin. When you push the power switch power gose to the module but no p. I have check for power to all ac switches 'relays low and high cut out switch and all work up till you get to the ac control module. Circuit Description. so would my best bet be to get some freon and some gauges and add some and see if it kicks on i tried a switch off my dad 99 gmc jimmy with the 4. ACDelco GM Original Equipment Tire Pressure Monitoring Sensors (TPMS) are battery powered sensors located in the tire that monitor the vehicle's tire pressure, and warn the driver when pressure falls more than 25% below the manufacturer's recommendations (normally through a slow pressure loss). The Chevrolet truck uses two air conditioning pressure switches: a high- and low-pressure switch. The adapters and fittings used to add refrigerant can only fit the low pressure side. 03 jetta tdi. So my pressure switch is the issue, here. i have seen a bunch of these truks with this problem and what it iis there is a small screen under the oil pressure switch that gets sludge in it and stops oil from reaching your pressure sensor, remove your oil pressure sensor on rear of intake and take a small pick and pull out the screen and throw it away, reinstall our oil pressure sensor. ) Unplugged cycling switch and bypassed it with a paper clip (nothing) 2. The oil pressure sensor is typically located near the bottom, right side of an engine, between the oil filter and the oil pan, according to Repair Pal. Remove electrical connection; use a 5/8" wrench to remove switch, replace switch and plug in. I need some help. Here's our foolproof tips for finding yours. It works like a regular high-pressure fitting like on an air compressor hose- pull the ring back, push the hose on the port until it clicks, then release the ring to lock the hose on the port. These automobiles will set a check engine light code in the P0440 range. Im pretty sure based on what Ive read the high high side pressure is from blockage somewhere in the system. The AC pressure switch is a device mounted on the high and low side of the AC. This was used for replacing the low pressure clutch cycling switch on my 1998 Chevrolet Silverado 5. Connect your bottle and hose thingy to it. Doing this with a gauge set would be ideal,so you would see the high side rising and shut off the system if pressure gets too high. The high-pressure switch is designed to shut down the compressor if the line pressure gets dangerously high. 2000 Chevrolet Silverado AC / heater problems with 4 complaints from Silverado owners. A/C low pressure switch location? Service & Maintenance. Once the pressure dissipates, the HP switch normally automatically resets and the machine comes back on. High pressure cut out switch Post by CDN007 » Wed Nov 18, 2009 7:46 am I am trying to track down an A/C problem and find a few leads back to the high pressure cut out switch. Get Fuel Pressure Sensor For online with fast and free shipping, discover all the facts before purchase. However, the oil pressure sensor, also known as the oil pressure switch or sender, has different locations depending on a vehicle's make. low pressure refrigerant from the evaporator and compresses it according to speed and air temperature. Can got cold but it only took about 1/4 of the first can. Your low on Freon or the low pressure switch is bad. 9L Ram Cummins at Diesel Power Products. This switch has three pins in a row. To wire up the ac for my Lsx swap I need to use the 4. Can anyone help? Thank you. I can get the compressor clutch to engage by grounding the low side of the relay in the electrical center under the hood. Air Conditioning Pressure Switches Reliable high- and low-pressure protection and fan trigger control. Check this out and we'll teach you how your truck's air conditioner (AC) works; all the principles of science that go into this magic machine. 2000 Silverado AC Condenser & Radiator, A/c low & high pressure switches - Duration: Diagnosing AC low pressure switch on 2001 GMC Sierra 1500HD. Running readings were 35-42 on the low side and 400-450 on the high side with the pressure bouncing around on the high side and both sides increasing if I bring the idle up. When the pressure is high the signal voltage is high. All our A/C Switch Connectors are constructed of high-quality materials for long-lasting durability. It kicks the compressor off when the pressure gets too low, and when it gets too high. Low side pressure is controlled by the cycling switch. An inoperative fuel pump relay can result in long cranking times, particularly if the engine is cold. The high pressure switch is meant to shut the power off that is provided to the compressor, when the AC compressor pressure goes beyond a certain level. On the LOW side, pressure should be 28PSI when the compressor kicks on On the HIGH side, pressure should be 2. you might have a bad pressure switch. Compressors fail by not making pressure, not by making too much. It is located on the Accumulator near the passenger side firewall. Low side pressure can vary from 30-55psi, High from 150-325, both depending on ambient temp. Wouldn't the AC pressure switch sense a high pressure system in this. I need some help. That is 48 ozs or 4 - 12 oz cans. A/C High Pressure Side Switch (76) Four Seasons AC Pressure Switch. 1992 Chevy 3500. When i turn on the a/c the compressor does not engage. A/C Hoses and Fittings for Chevrolet Silverado 1500 Chevrolet is a manufacturer known for producing cars and trucks, including the Silverado 1500 pickup. Besides, a restricted or clogged orifice doesn't cause an over-pressure in the system. To prevent this from happening, many systems are equipped with high-pressure cutout switches. We took it back to the shop and they noted that the compressor was shutting off for some reason. After that you're gonna need a schematic to accurately trace down the break in the circuit. Compressors fail by not making pressure, not by making too much. One thing I did notice is when I tried turning on the AC after doing thework the Aux fans were running which they weren't before. Last year I did:High pressure radiator/fan switch thingyReplace CompressorFlush/Recharge with R12Replace Receiver/DrierBelt and PulleyClean out evaporator fins I took it to the local Firestone, and they said they wouldnt have the testing equipment ready until mid-April. I had a chatter in my compressor for a month, but was blowing cold. Sienna Ac Low Pressure 2000. VOLVO S40 AC PARTS 2000-2012 and all Volvo Parts can be purchased from swedishautoparts. 2004 Yukon with 6. The most recently reported issues are listed below. It kicks the compressor off when the pressure gets too low, and when it gets too high. To prevent this from happening, many systems are equipped with high-pressure cutout switches. 03-06 have actual AC pressure sensors so that you can tell it what you want and let the computer provide. Normal running pressure is around 30-35 psi on the low side, high side will vary by outside temperature but is usually around 200 to 250 psi. If the fan is on, adequate pressure is present in the system (pressure cycling switch is closed), and either a/c or defrost is selected, the point "to ecm" is drawn close to ground. observe the pressure fluctuation on hot car when AC should run at full blast. P0453 Chevrolet Description The fuel tank pressure sensor responds to changes in fuel tank pressure. NovaSensor P330W Absolute Pressure Sensor is a Piezoresistive (PRT) Pressure Die, offering the same superior stability and sensitivity as in larger die, but in an extremely small footprint, making it ideal for invasive applications where small size is critical. 49k , replace the pressure switch and recheck. I agree that too high pressure will reduce cooling, but my experience is the compressor stays on all the time even with the switch - my assumption is this is for safety in the event there was some blockage or. 2004 Yukon with 6. Turn Off the AC When Not Needed. I put in the first replacement wheel position sensor a few years back (circa 2007), which was a genuine GM part from the dealer. I will look for damaged wiring around engine as others have found. My 2001 Chevrolet Silverado A/C blows warm sometimes. Choose top quality brands AC Delco, GPD, UAC. It monitors the pressure of the refrigerant on both sides of the system. Also, a failed front fan can lead to a front trunk electrical fire as this circuit was unfused as produced by the factory. If no voltage is present, something is stopping it. Choose top quality brands AC Delco, Santech/ Omega Envir. The inlet side is known as the low (pressure) side and the outlet side is known as the high (pressure) side. (normally open) switch and that the Silverado's is a normally closed switch. 3L V8 > Heat & Air Conditioning > A/C Compressor. 0 motor just got the truck. My next question is specifically on Low Side/High Side pressure and the operating/switch conditions on the 3-way pressure switch. Both the high pressure and low pressure switch are combined into what is called a trinary switch. The function and purpose of A/C Compressor Pressure Cutoff Switch. Jump the low pressure switch only to test the circuit. If you have a situation where your car's air conditioner compressor clutch doesn't engage, try the troubleshooting techniques described here. Why A/C Compressor Pressure Cutoff Switch replacement is so important. I read that this is a very common failure on many GM a/c systems. Nobody beats our Silverado 2500HD prices and fast service. Silverado 1500 MAP Sensor AC Delco. On the 85 300 D I have here is where I am at: When I turn on the A/C at the climate control I have NO power at the 2 wires that go to the low pressure switch on the drier. Does the system need the gas removing first? My A4 has a blown fuse 6 (air con pressure switch) and blows a new fuse as soon as the ignition is swiched on. The Series A3000 Photohelic® Pressure Switch/Gage functions as versatile, highly repeatable pressure switches combined with a precise pressure gage employing the time-proven Magnehelic® gage design. Labor costs are estimated between $26 and $34 while parts are priced between $55 and $57. Used 2019 Chevrolet Silverado 1500 for sale in Cincinnati, Louisville, Columbus, and Springfield Ohio at Jeff Wyler Chevrolet. When i turn on the a/c the compressor does not engage. Assist steps, chromed tubular, 6" rectangular (factory installed) Bed Liner, Spray-on, Pickup box bed liner with bowtie logo consisting of high pressure, chemically bonded, sprayed-on polyurea & polyurethane liner formulation. Now if it's located between the high and low side lines then yes I would agree. also the pressure switch on my 99 silverado can be changed without loosing any freon. We offer a comprehensive line of A/C Switch Connectors for a wide range of applications. You are creating a pressure drop inside the can. Get Yours Today! We have the best products at the right price. While bypassing, there is still no cold air being blown. …with a Tire Pressure Monitoring System. The high pressure side and the low pressure side. Help With Those Troublesome EGR Valve Codes! Today I'd like to throw some thoughts out on how to check a car's EGR Valve and related EGR system components for proper operation. But first things first, compressor is not running. A sensor that can "talk" to a electronic module, and it would be the module that would make the call on compressor cut out and fan based on the pressure the sensor sees. All our A/C Switch Connectors are constructed of high-quality materials for long-lasting durability. I'm dedicating this page to the orifice tube used in automotive air-conditioning systems. Had to jump the low pressure switch to get compressor to engage. This will usually happen when a condenser fan fails. Another sanity check is that the low-pressure switch activates at 32 psi, which is lower than the 40 psi you are seeing on the low-side. 1 all fuses and relays good. If you jump the low pressure switch with the engine running, do it only for a few seconds. The tranducer attaches to the high side a/c line and controls the highlow pressure, and the electric fan. Air Conditioning System Pressure Switch. Jeep Wrangler, Patriot, Grand Cherokee and Compass sensor pressure transducer. All automotive air conditioning systems are (nearly) closed loops with a high-pressure side and low-pressure side. I have a a/c manifold gauge coming to me so I can check the High/Low side pressure. and pumping. when the switch opens the pcm shuts the ground off for the relay. Be careful, and read up about the risks. Also, a failed front fan can lead to a front trunk electrical fire as this circuit was unfused as produced by the factory. Age, debris, fluids, heat, and miles driven can damage or wear down parts within the engine compartment of a truck. We've got amazing prices on 2000 Silverado 1500 Tools, Fluids & Garage and Accessories, Body & Wipers parts. Both the high pressure and low pressure switch are combined into what is called a trinary switch. The average cost for a Chevrolet Silverado 1500 air conditioning refrigerant pressure sensor replacement is between $92 and $100. My next question is specifically on Low Side/High Side pressure and the operating/switch conditions on the 3-way pressure switch. 2l high country has had air conditioning problems since I bought it, the ac lines develope pin hole size leaks even after fixing it over and over, the ac line has no brackets or brace to keep the line from moving or shifting when driving on ruff terrain or some what bumpy roads. The sensor is connected with the valve stem. The A/C pressure switch is mounted on both the high and low sides of your A/C. I read that this is a very common failure on many GM a/c systems. My diagnosis You need a new mechanic. The Chevrolet truck uses two air conditioning pressure switches: a high- and low-pressure switch. com as Symptoms of a Bad or Failing AC Pressure Switch. If the pressure switch resistance does read about 2. See more ideas. Free shipping for all orders over $75. Getting the Low refrig / ac off message on the DIC, figured it needed a little top off on the charge, Low/high sides reading 100 psi while off, reading 40 low and 125 high while running. Connect your bottle and hose thingy to it. 3L/ engine powering this Automatic transmission. Good luck! inetquestion wrote: > The problem is so intermittent I have not been able to isolate it for > a few weeks now. This article applies to the Chevrolet Silverado 1500 (1999-2006). if you have no power you're going to have to start testing the high and low pressure switches. If both gauges do not move, the compressor is not pumping. All our A/C Switch Connectors are constructed of high-quality materials for long-lasting durability. This switch works to keep the air conditioner full of the refrigerant it needs, in order to keep the AC blowing cold air. Get Fuel Pressure Sensor For online with fast and free shipping, discover all the facts before purchase. I jumped the AC high pressure sensor and it didn't change a thing. No power to A/C low pressure switch, this is driving me craZy. com/ask-the-pro/port-locator/. Choose top quality brands AC Delco, GPD, UAC. This took care of my intermittent compressor issue. Turn Off the AC When Not Needed. It monitors the pressure of the refrigerant on both sides of the system. The low-pressure side system pressure, while running, should be in the 25 to 45 PSI range. high pressure switch, and evaporator. The seller is “k-parts-garage” and is located in Las Vegas, NV. The worst complaints are a/c not working properly, ac belt keeps breaking, and fan speeds limited. The hose that the low-pressure fill port is located on feels cold, but the high pressure side of the orifice feels like the normal outside temperature. 2000 SL2 AC Clutch not engaging to do with the low pressure switch, but I can't find that article now and I do not know where the low pressure switch is located. My AC compressor was going kicking on and off. By the way, my online database is showing that the 97's high pressure cut out switch is located on the compressor and the low pressure switch is on the accumulator. 1992 Chevy 3500. The transducer will allow the fan to come on or shut off at different pressures. These are the RED & BLUE PCM connector pinouts that will cover 1999 to 2002 4. Check for ground on the black wire. The compressor must be running when you check pressure. 2000 Silverado AC Condenser & Radiator, A/c low & high pressure switches - Duration: Diagnosing AC low pressure switch on 2001 GMC Sierra 1500HD. Low side pressure can vary from 30-55psi, High from 150-325, both depending on ambient temp. } GM Original Equipment; Includes High Pressure Cutoff Switch Info. Never connect a charging can to a high-pressure port. With key on, disconnect the A/C pressure sensor and check for five volts on the gray wire. Pcm Tuning For Efans And A/C Climate Control (located in front of the engine radiator). When the vacuum produced inside of the engine is low, assisted braking is nearly zero. Age, debris, fluids, heat, and miles driven can damage or wear down parts within the engine compartment of a truck. When you push the power switch power gose to the module but no p. This helps if you have added a turbo charger or supercharger. I'd go by the wiring colors, not where the diagrams state they should be. there is a schrader valve behind it that seals up when you remove the switch hope this helps. The AC pressure on my 2004 Envoy when first started goes to 450 psi and trips high pressure switch. Sensor: Workaround that avoids the replacement of the AC evaporator sensor from all Ford Fusions up to 2012. The low-side and high-side ports connecting to the A/C compressor. If there is not enough refrigerant in the system, a low pressure sensor will keep the compressor clutch from engaging. Getting the Low refrig / ac off message on the DIC, figured it needed a little top off on the charge, Low/high sides reading 100 psi while off, reading 40 low and 125 high while running. I have replaced my Compressor (bought a new Delphi), orifice tube, drier, AC Control Unit, and Ac Relay. Check for ground on the black wire. You will be able to read the AC system's pressure (or lack of) at this point. 3 and it looked just like mine so i tried to put it on all the way and once i tightened it up all the way by hand it started to leak and now the other one does it too so im not sure. When ac is switched on, ac light comes on and fans spin. Auch shows when I attempt to recharge maintain the high pressure gage and the system take the charge. Designed utilizing the latest technology, this product by ACDelco features premium quality and will perform better than advertised. While bypassing, there is still no cold air being blown. The transducer will allow the fan to come on or shut off at different pressures. Re: Where is the High-Side Service Port Located? Post by jimmy57 » 12 Jun 2011, 01:22 You unscrew the high side pressure sensor, provide electric fan air flow to condenser and use an Acme thread R134a line on the Schraeder valve fitting where sensor was unscrewed. Agreed the compressor is not running. The sensor is connected with the valve stem. Bypassing the low-pressure switch engages the compressor continuously until I break the connection. ) pulled out the Haynes manual and studied the diagram and tested as follows:. Check the power connection to make sure it is live before replacing. If pressure inside the unit exceeds 435psi, the switch opens, stopping all functions of unit. Get Yours Today! We have the best products at the right price. We've undergone a big change here at The Repair Connector Store with a whole … Create Your Account. What would a low side pressure of 100psi with the engine running and a/c on max suggest might be the problem? My wives car, a 2000 accord's A/C system started blowing blowing warm air late last summer/early fall. Then I realized I hadn't pugged the connector back on the Pressuere switch. To install a switch now, you will have to evacuate the system, install the switch and than recharge it. Delivers 22 Highway MPG and 16 City MPG! This Chevrolet Silverado 1500 delivers a Gas V8 5. With key on, disconnect the A/C pressure sensor and check for five volts on the gray wire. In a common-rail world understanding and modifying high-pressure fuel pumps for Cummins, Duramax, and Power Stroke engines can be done. Cold Hose is an automotive air conditioning fitting and hose website. The good news is there should be a schrader valve under the sensor which allows you to remove it without evacuating the refrigerant. That’s why Walbro high-performance fuel pumps and modules are developed and built specifically to meet the demands of today’s high-pressure and high-flow engines with efficient and durable performance. Do you get cold air from the AC? Any change while driving?. With the switch plugged in both wires should show ground. Has anyone seen this problem and have a solution?. If the pressure switch resistance does read about 2. 3L V8 > Heat & Air Conditioning > A/C Compressor. The function and purpose of A/C Compressor Pressure Cutoff Switch. you're going to have to test for power at the power side of the ac clutch relay. The compressor is clicking on and off repeatedly, which leads me to believe that the low pressure switch is not allowing the compressor to come on long enough to take any. Check this out and we'll teach you how your truck's air conditioner (AC) works; all the principles of science that go into this magic machine. R-134a TEMPERATURE PRESSURE CHART (Tabla de Temperaturas y Lecturas). The PCM utilizes this information in order to turn ON the engine coolant fans when the A/C refrigerant pressure is high. This article applies to the Chevrolet Silverado 1500 (1999-2006). any ideas? Discussion in 'Gen 2 Prius Technical Discussion' started by wpbbum, Nov 28, 2012. Ok so I have a CPW harness and labled as the Low Pressure AC Switch there is a 3 prong connector that looks IDENTICAL to the 1998 LS1 Camaro Coolant Temp connector that is on the drivers side of the harness plugged up to my 1998 LS1 camaro temp sensor. A fuel rail pressure sensor (commonly known as a fuel pressure sensor) is used in many diesel and some gasoline engines. Want to buy Chevrolet Silverado auto parts? Look no further than GM Parts Giant, the best place for genuine Silverado parts. It kicks the compressor off when the pressure gets too low, and when it gets too high. Easy to replace. A/c compressor clutch not engaging on 2000 chevy silverado. 49k (OK), replace the control module. Includes FCP's Lifetime Warranty & Unlimited 365 Day Returns. Flushed out the system and added Freon. A friend gave me advice, that does not go more than 4000 rpm , and the compressor will work ok. You will be able to read the AC system's pressure (or lack of) at this point. How to diagnose high head pressures at the air conditioning or heat pump compressor: What are the causes of high head pressure at an air conditioner or heat pump compressor motor? This article lists twelve causes of high head pressure and explains their causes, effects, and diagnosis. high pressure switch, and evaporator. If not, then you may need to replace it. Enter your car's make and model to find where the low pressure ac port is. The switch just needed to be torqued down. Black 2015 Chevrolet Silverado 1500 High Country 6-Speed Automatic Electronic with Overdrive V8 ABS brakes, Chrome Door Handles, Compass, Dual-Zone Automatic Climate Control, Electronic Stability Control, Emergency communication system, Front dual zone A/C, Front Frame-Mounted Black Recovery Hooks, Heated & Cooled Driver & Front Passenger Seats, Heated door mirrors, Heated front seats. Other factors, such as where the work is done (whether at a local auto repair shop, car dealership or you do-it-yourself) also factors heavily into the cost of repair. 2000 Chevy Silverado AC went out. No power to A/C low pressure switch, this is driving me craZy. Jump the low pressure switch only to test the circuit. VOLVO S40 AC PARTS 2000-2012 and all Volvo Parts can be purchased from swedishautoparts. The Chevrolet truck uses two air conditioning pressure switches: a high- and low-pressure switch. I can get the compressor clutch to engage by grounding the low side of the relay in the electrical center under the hood. Black 2015 Chevrolet Silverado 1500 High Country 6-Speed Automatic Electronic with Overdrive V8 ABS brakes, Chrome Door Handles, Compass, Dual-Zone Automatic Climate Control, Electronic Stability Control, Emergency communication system, Front dual zone A/C, Front Frame-Mounted Black Recovery Hooks, Heated & Cooled Driver & Front Passenger Seats, Heated door mirrors, Heated front seats. Update I just Installed a new Pressure Switch , recharged the system and still no luck. High-Pressure Cutout Switch; When certain malfunctions occur, high-side pressures could exceed the safe operating limits of the compressor, hoses, or other components. Quick Fix (workaround) Ford Fusion AC Evap. Had engine at idle and hit the AC switch, looked under hood and clutch is not engaging. Enter your car’s make and model to find where the low pressure ac port is. A/C High Pressure Side Switch (76) Four Seasons AC Pressure Switch. Here we'll explain exactly why this is the case. Running readings were 35-42 on the low side and 400-450 on the high side with the pressure bouncing around on the high side and both sides increasing if I bring the idle up. } GM Original Equipment; Includes High Pressure Cutoff Switch Info. BTW- I'm not sure I agree with tj on that being the location of the orifice tube. By the way, my online database is showing that the 97's high pressure cut out switch is located on the compressor and the low pressure switch is on the accumulator. New Air Conditioning (AC) Pressure Switch for 98-10 Beetle, 07-08 Eos, 99-12 Golf, 99-10 Jetta, 01-12 Passat, 03-10 Touareg, 03-07 Audi A3, 99-10 Audi TT. Low side pressure can vary from 30-55psi, High from 150-325, both depending on ambient temp. Learn More. Heat & Air Conditioning Repair Manual. High Pressure Cutout Switches M10 Female Schrader Fitting Set Reset Mode Connector Notes Index Part No. This 2000 Chevrolet C/K 1500 Pickup / Silverado is located at our Used Car Dealership in Tacoma, Washington. The Series A3000 Photohelic® Pressure Switch/Gage functions as versatile, highly repeatable pressure switches combined with a precise pressure gage employing the time-proven Magnehelic® gage design. Too high of a high side pressure is not a compressor problem. Pressure range is between 10kPa and 350kPa. Find CHEVROLET Gauge Sending Units with Oil pressure Gauge Type (application) and get Free Shipping on Orders Over $99 at Summit Racing!. I would have the system leak checked prior to throwing parts at it. If the fan is on, adequate pressure is present in the system (pressure cycling switch is closed), and either a/c or defrost is selected, the point "to ecm" is drawn close to ground. These high-pressure fuel pumps are typically driven by a camshaft and are able to vary their displacement and output to match the needs of the engine. 98 Suburban a/c pressure -30 low-155 high basicly with the ac fan on max, engine RPM 1500-2000 the low side should be 40psi area with the air temp @80deg F , the. Can some one please tell me what's wrong and how to fix it?. INTERNATIONAL (Navistar) - SWITCHES PRESSURE Choose your Vehicle All Models (except below) 2000 Series 4000 Series (DuraStar) 5000, 5000i Series (PayStar) 7000 Series (WorkStar), 8000 Series (TranStar) 9000 - 9900i, ix, Eagle LoneStar / ProStar TerraStar (Class 4/5) All Models Click the Year or Part # to see details. The AC compressor switches are each located on the high pressure and low pressure sides of the AC compressor. Air conditioning systems rely on an accumulator to store liquid refrigerant that did not expand into a vapor in the evaporator. A clogged orifice tube, on a correctly installed R134a system, would not wouldn't cause your improbable series of events as the either HPCO switch would cut off the clutch or the manifold relieve valve would have popped off had the pressure gotten too high. Quick question for someone in the HVAC field. The item “4 pcs Tire Air Pressure Sensor for Toyota 4Runner RAV4 Lexus CT200h GS300 2. 2l high country has had air conditioning problems since I bought it, the ac lines develope pin hole size leaks even after fixing it over and over, the ac line has no brackets or brace to keep the line from moving or shifting when driving on ruff terrain or some what bumpy roads. It is mounted in the low pressure side of the AC system and its purpose is to detect the flow of refrigerant in the system by measuring the pressure. The oil pressure switch will turn on the fuel pump as soon as oil pressure reaches about 28kpa (4psi). Estimated Pull Time: 25-30 minutes. I rummaged through the Service Manual to get ideal pressures but I am either missing something or some of the data is wrong. Looking for a 2000 Chevrolet Silverado 1500 Fuel Pressure Regulator? Get yours at Wholesale Prices and Free Shipping over $50 only here at AutoPartsWarehouse!. Hello I have a 2000 Silverado and am having an issue with the AC blowing hot. That indicates that the compressor is working. Agreed the compressor is not running. Seemed the low and high pressure switches (one located on the AC dryer and the other at rear of AC compressor) were OK because we swapped them from another truck and observed no. Want to buy Chevrolet Silverado auto parts? Look no further than GM Parts Giant, the best place for genuine Silverado parts. We took it back to the shop and they noted that the compressor was shutting off for some reason. Im pretty sure based on what Ive read the high high side pressure is from blockage somewhere in the system. The most recently reported issues are listed below. 5TD, TD) Diesel Engines, and is useful reducing "no run" or driveability conditions in many GM fuel injected applications due to oil pressure switch failure. Your jeep was most probably made during that transition period. Chevy Silverado 2003, GM Original Equipment™ A/C Refrigerant Pressure Sensor by ACDelco®. Voyager w/ 3. 5x ambient, so if ambient is 80F, the high pressure should be around 200PSI (80x2. Free shipping for all orders over $75. on YourMechanic. could it be the compressor cycle switch or that it is low on refrigerant?. How to diagnose high head pressures at the air conditioning or heat pump compressor: What are the causes of high head pressure at an air conditioner or heat pump compressor motor? This article lists twelve causes of high head pressure and explains their causes, effects, and diagnosis. Thanks for your interest in this used 2015 Chevrolet Silverado 1500 Crew Cab Short Box 4-Wheel Drive High Country available at Knoepfler Chevrolet, conveniently located in Sioux City, IA. It is mounted in the low pressure side of the AC system and its purpose is to detect the flow of refrigerant in the system by measuring the pressure. I jumped the AC high pressure sensor and it didn't change a thing. How to Change a Truck AC Accumulator and Expansion Valve. Last year I did:High pressure radiator/fan switch thingyReplace CompressorFlush/Recharge with R12Replace Receiver/DrierBelt and PulleyClean out evaporator fins I took it to the local Firestone, and they said they wouldnt have the testing equipment ready until mid-April. } GM Original Equipment; Includes High Pressure Cutoff Switch Info. I think you need another can.