Question about 1997 Chevrolet S-10 Pickup

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A/c does not work clutch will not engage is there a relay that might have gone bad and where can I find the switch

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AC systems have a pressure switch that won't allow compresser to engage w/o enough freon in system.they sell an inexpensive hose,gauge,& can of freon kit at auto stores.look for the kind that has dye in it to show if you have a leak.

Posted on Sep 23, 2009


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2004 honda odyssey a/c clutch won't engage

use a tester to see if your getting power to the switch and also check it at the pump itself. hope this helps. it could be that pump or clutch has gone bad........hope this helps and good luck.

Aug 13, 2012 | Cars & Trucks

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2006 didge mega cab 5.9 diesel..A/C clutch will not engage...Dealership dianosed a bad a/c compressor coil..I did not let dealership do the 1635.00 job...I purchased NEW replacement parts and had a local...

twstn79, Try checking the fuse and relay located in the power distribution box in the engine compartment. There is a legend on the inside of the cover to tell you which fuse and relay to check. For the relay, just switch it with the horn relay and try the horn to test this. Check the plug at the low pressure switch to see if there is power there. It is the low pressure switch that sends power to the clutch to engage it. If the fuse and relay test good and you have no power at the low pressure switch plug then the problem could be in the wiring and will have to traced. If there is power at this plug then check the switch itself. The switch can be checked with a DVOM meter. Check the switch, with the engine off, for continuity. If you get no reading then the switch will have to be replaced. Another possibility is the switch in the dash panel and/or any associated wiring. Good luck with this.

Aug 12, 2011 | 2006 Dodge Ram 2500

1 Answer

Air conditioner not working on 1993 bonnevile, compressor not engaging, charge good, power at low pressure switch, switch is closed, need to know what turns a/c relay for compressor clutch on, clutch...

the ECM supplies the ground circuit for the a/c clutch. the high pressure switch also needs to be closed to engage the clutch. when the low pressure switch and the high pressure switch are closed that completes the power circuit to trigger the relay.then the power on the #30 terminal can connect to the #87 terminal to send power to the a/c clutch.

Aug 02, 2011 | Pontiac Bonneville Cars & Trucks

1 Answer

Ac will blow warm air, the clutch does not engage. Could this be a compressor prob? Looked in the manual trouble shooting ideas

Since you know that the clutch must engage in order for the compressor to operate, then there are most likely one of causes. The first is low or no freon in the system. The a/c system has a pressure sensor mounted in the low( return) side hose that prevents the clutch to engage if the freon is too low. The second would be the a/c fuse or relay faulty, preventing the clutch solenoid( a 12 volt electrically operated solenoid) from engaging. And the third would be that the clutch itself is bad because the solenoid wiring has broken. I suggest that first you locate the a/c clutch relay in the relay panel, remove the relay, carefully remove the plastic cover from the relay and reinstall the relay. The clutch should engage the compressor when you manually close the relay contact with your finger for one or two seconds. If the clutch does engage, your electrical circuit in ok and you are probably low on freon. A half of a can of r-134 in more that enough to operate the pressure switch. If it doesn't engage, check the a/c fuse or the clutch solenoid itself. Get back to me and let me know how things went. Dano

Jun 30, 2011 | 2001 Dodge Ram 1500 Truck 2WD

1 Answer

AC compressor won't engage clutch

Lots of things can cause this, I will list them, easiest first.

A blown fuse or relay can prevent the clutch from kicking in. Low refridgerant charge will also do this, the low pressure switch will prevent the clutch from engaging when there is low refrigerant to prevent damage. You may need to put more in, and you also may need to jump the low pressure switch to get the compressor going to add more in. Very rarely the controls could have gone bad, which are the buttons on the dash. Id check out the fuses, relays, and pressure in the system first. A shop may even do a free diagnosis for you.

Jun 17, 2011 | 2002 Ford Escort

2 Answers

A/c has full freon but the compressor clutch wont engage. i have found that the plug going into the compressor is not getting any power. what could be the problem?

On the low pressure line of the ac you have a pressure switch which allows the compressor to come on once a certain pressure is reached, and it will cut the compressor off if the pressure is too high or too low. Look at your ac hose and find the switch *you will see wires connected to it* you may need to replace this switch. You can use a test light to see if you are getting power to the switch. You should check you fuses, and the ac relay witch is usually in a black plastic box under the hood.

Aug 10, 2010 | 1997 Ford Crown Victoria

1 Answer

I turn the key and only here a click. I work the clutch pedal in and out until the starter engages. Is there a relay on the clutch pedal that would cause it now to cycle

Yes, the clutch pedal has a relay switch that tells the starter that it's in neutral. The switch could be bad (if it worked recently you prob don't need to adjust it). You can also check the fuse, those are the easiest solutions. My first guess would be to go to the fuse and check, then check the connection to the clutch switch and make sure you haven't come disconnected, have a buildup on the connection, and don't have any worn (bare) wires touching a body part that's metal (bad ground or ground-out).

Dec 12, 2009 | 1995 Honda Accord

1 Answer

Why will the AC of my Town and Country not engage?

could be low of freon ,most cars has a pressure switch so when the system has a leak and loses presure under the rated pressure of the switch it shut it is located on the dryer it will be a 2 wire plug type set up, unplug the ele. plug side momentary and jump it with a jumper wire and see if you hear the compressor clutch kick in if so either the switch is bad or your system has loss freon. could be also something as simple as a blower fuse or relay too ,last but not lest the compressor clutch couldv'e gone bad. to ck that if you are getting fire at that pressure switch and down to the compressor then the clutch is bad or compressor as a whole has locked up but that would make it either throw a belt or burn it off.

Dec 02, 2009 | Fiat 124 Cars & Trucks

2 Answers

Ok hear we go agian 2000 ford taurs 3.0 lit no a/c when i jump the compressor with a jumper wire. it works fine and i checked the high side swtich it works fine and the low side works ok to.

There are 3 likely problems:
  1. system could be air locked; when recharged, its possible more air than refrigerant was pumped into the system
  2. clogged or bad expansion valve
  3. AC clutch is bad; although it will engage when you jump it, the clutch could still be bad preventing it from engaging when you turn on the AC
Hope this answers your question. Best of luck.

Jul 31, 2009 | 2000 Ford Taurus

1 Answer

AC Clutch engages as soon as battery is hooked up

Your A/C relay may have gone bad and has disconnected the power to the A/C compressor clutch.
Not sure where the relay is to your A/C, it may be in the fuse box but regardless check the relay and replace if it's seized. If you like in the mean time, you can always disconnect the wire harness to the A/C compressor clutch to keep the battery from draining and save your compressor from over heating.
Good luck and hope this helps. Keep me posted and be glad to help.

Jun 03, 2009 | 1990 Honda Civic

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