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I have a 1990 cadillac deville and my ac pulley stopped turning, do I need to replace the entire compressor or just the pulle

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  • 32 Answers

I have a 98 deville. Sorry bud ur compressor is locked up! Need a new one! Cadillac is the worst to work on also! Good luck!

Posted on Nov 01, 2012

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6ya6ya
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Posted on Jan 02, 2017

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  • 255 Answers

SOURCE: 1998 cadillac deville reads service ac system

Hi,check if the compressor clutch is engaging,if not check the conection at the compressor if ok check,fuse ,or relay ,if those are fine and the commpressor is engaging,check freon presure ,may be too high or low, if this is the case ,correct the problem and disconect the negative cable from the battery for a minute to reprogram the sistem..C1

Posted on Jan 04, 2009

chiquititas
  • 1010 Answers

SOURCE: Needing to remove ac compressor to install ac bypass pulley

There are a couple of ways to approach this. I just did one of these for a friend. The A/C pump seized while running. The serpentine belt broke. Crazy things can happen to other components when this occurs. In this case the broken ends of the belt, I think, whipped back around on itself on the crankshaft pulley and one of the other pulleys in the belt circuit and devastation occurred. 1) It snapped the power steering pump bracket in two. 2) It took out the alternator. 3) And not to be left out, GOODBYE cool blowin air conditioning. Time to decide what to do. He had to order the power steering bracket from a dealer (junk yards were cleaned out). He decided to replace the power steering pump with a remanufactured unit and new hoses (parts houses are much cheaper than dealer parts folks). You'll need a pulley remover that you can usually borrow (with a deposit) from some parts houses. He HAD to buy the alternato ya gotta have juice. I have been using the name, "parts houses" . (Can we use specific company names in this forum MR./MS. Editors ? I Feel I need to for the sake of all of us that come here for correct information.) THE ANSWER : DO you want to drop the bucks into fixing your A/C ? NO ? It can be involved and costly depending on how good of a do it yourselfer you are. New pumps are spendy. Then, if you use the older refridgerant you'll need a conversion kit and blah blah blah. YOU have opted for a bypass pulley. COOL ! Errrr...not actually. It's coming out. The bolts that hold the A/C pump to its bracket come out from BEHIND the bottom of the unit. They are long and won't clear the intake manifold,at least not easily. Take the bracket bolts out from the front. Take the hose from the pump to the dryer apart (at the dryer). Do you want to preserve the system for future repair? If so, cover that connection on the dryer to protect it from the world. With a sharp blade, cut the other hose coming off the pump right behind the grill. Or, try to take the fitting apart at the evaporator. Cutting it is easier. Plug the cut off end if ya want. Future repair thing. Rotate the pump forward so you can either take the bolts out,or remove the pump and bracket as a unit, with the lengths of hose attatched to the pump. This gets all that hose you no longer need out of the engine compartment. NOW THE BYPASS PULLEY. He found a pulley from NAPA. IT DOES NOT WORK ! YOU DO NOT NEED IT ! Nothing against NAPA. I have bought good parts from them before. Maybe their supplier does not know. The pulley is supposed to drop into the A/C bracket in the concave recess that the pump once occupied. IT WASN'T EVEN CLOSE. Chevy released THREE versions: Poor Boy-no power steering,no A/C. MIDMan-power steering,no A/C. Rich Guy-power steering,with A/C. SO....... If you have power steering, the A/C pump removal just put you into Midman status. Stop at your local chevy dealer, ask them to print you a belt routing diagram from the computer parts book. It shows all three versions. Go to your local,,,,,,,"PARTS HOUSE", tell them info...year,make,engine size, REMEMBER.. IT NO LONGER HAS AIR CONDITIONING. YOU'LL GET A SHORTER BELT !! IF, they sold you the bypass pulley.....GET YOUR MONEY BACK !!! Use the diagram you got. The belt is routed a little different since you lost the A/C pump and the idler pulley with it's bracket(that you can keep for future repair or trade in for to be made into beer cans) Also remember that without a belt on, the tensioner pulley is swung over to the end of it,s range of motion. When you get the belt routed correctly you have to put a wrench on the bolt on the pulley and turn hard to compress the spring. (COUNTERCLOCKWISE) The bolt is left hand thread so it won't come loose while ya reef on it to get the belt swung onto the ALTERNATOR LAST.<<<<<<GOOD LUCK !!! ADDED NOTE: Would that bypass pulley work on say...an "88" or "89" or "90" ? > I DO NOT KNOW. DID CHEVY change the size of the pump bracket after 87 ? We will be letting the good folks at NAPA know what we ran into and how we fixed it. We also will ask for a refund on the wrong part for the job. IT DOES NOT FIT AN 87! WE DO KNOW THIS..... IF the belt had just broke in half and safely dropped away, then all those parts wouldn't have been needed and the cost of the fix is FOR A SHORTER BELT and a little sweat to remove the A/C pump and bracket. The A/C NEVER WORKED ANYWAY

Posted on Jun 23, 2008

cadman000
  • 607 Answers

SOURCE: need to replace turn signal switch 93 cadillac deville

First do you have a sterring wheel puller. Can't remove the steering wheel without one. Quite an involved job including snaking the electrical connector end through the steering column. I wouldn't recommend it to the novice

Posted on Mar 29, 2009

cadman000
  • 607 Answers

SOURCE: Windshield wipers will not turn off, I've replace the turn signal/wiper switch and still not turning off

Sounds like the PARK SWITCH within the WIPER MOTOR is at fault, Only way to beat it is relay the motor. Hope this helps

Posted on May 08, 2009

emissionwiz
  • 76846 Answers

SOURCE: need to bypass the a/c compressor with pulley

see the dealer for the delete AC pulley, that is the only place to get it.

Posted on Aug 28, 2009

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1 Answer

My compressor is grinding what is wrong?


Sounds like a bad clutch in the compressor. First you must discharge your AC system with an AC machine that sucks it out. Then you need to remove your drive belt by releasing tension on it by turning your belt tensioner the way it needs to go the slip the belt off the compressor pulley and NOT the entire pulley system just leave the belt on the other pulleys so it's easy to remember how it routs. Then remove your high pressure and low pressure lines that bolt to the compressor and make sure the system is discharged before you do so. Then you will have three or four bolts that hold the compressor to the engine/timing cover. After you get those out it's a wiggle game getting the compressor out of the vehicle. Once all done install new compressor in reverse order of taking it out then once it's all buttoned up you must use an AC machine to vaccume all the air out of the system to ensure proper AC operation then you charge the system to the manufactures specified value which there should be a sticker on your hood or raidiator brace on top if no sticker check the owners manual if still nothing call a Cadillac dealer and ask for the manufactures specified AC system charge weight for your vehicle. Hope this helps buddy

Jun 30, 2014 | 1995 Cadillac DeVille

1 Answer

Install Drivebelt but splits in two


Not sure I follow your question, but I will offer a clarification to what you said.
The compressor clutch is a free-wheeling pulley until you engage it electrically. As long as the ac and defrost is turned off the compressor could be empty of freon and the pulley should still spin. So you should be able to drive the car for several miles or days with the climate control off and see if the belt is going to last.
If the ac stays off and the belt still breaks, the ac pulley or one of the other components could be faulty.

Jun 10, 2013 | 1987 Cadillac DeVille

1 Answer

My cadillac concours deville say low refrigerant ac compressor off and tried to put some in is there a certain way to do it


Yes, if it is like my 1990 cadillac deville, you must first disconnect the battery for 3 or so minutes and reconnect it to clear the error message and to reset the a/c system so it will turn on when R134a is added under pressure.

Cadillac did that in 1990 so the compressor would not run without refrigerant in the system. It's a safety feature designed to save a compressor if there is a leak in the system.

If you try to add refrigerant without resetting the a/c system, then the compressor will not engage.
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Jun 06, 2010 | 1995 Cadillac DeVille

1 Answer

2001 cadillac deville ac compressor not coming on


Try adding some refrigerant as it won't come on as a safety feature if it is too low in pressure.

Otherwise, it may be an electrical break in the clutch wires, or a bad fuse.

If it is like my 1990 Cadillac Deville, the a/c compressor will not come on at all until the battery is disconnected for several minutes and reconnected, and then charged with at least .5 lbs. of refrigerant.

May 26, 2010 | 1996 Cadillac DeVille

3 Answers

A/c sounds rough when i turn it on and there is a smell of rubber coming from the engine what could it be and how can i fix it


it may be the a/c clutch is locking up and your belt is sliding on a locked up a/c compressor's pulley. so check your belt for sign of burning and check your a/c clutch and pulley

Mar 28, 2010 | 1990 Cadillac Deville

3 Answers

1995 cadillac deville tears up the serpentine belt


usally tearing belts is the ac compressor not turning or poorly. your tension could be going bad also alllowing the belt to flex and contact another object. you will need to block your wheels.open the hood. have a freind rev the engine in cycles for you to watch and see if the belt flexes or the ac commperssor is the cause

Dec 30, 2009 | 1995 Cadillac DeVille

2 Answers

Need diagram on how to put belt on by bypassing theac


no such diagram, u need to buy a "AC DELETE PULLEY" it goes where the pump would go. here is a link to a company that sells these pulley's, of course you must remove the ac compressor to install the pulley in its place
http://www.acbypasspulleys.com/cadillac.html

Sep 15, 2009 | 1992 Cadillac DeVille

1 Answer

1996 cadillac deville compressor stopped, new compressor and dryer put on, but unit will not accept freon. Please help.


Sometimes, you have to start the vehicle, turn on the AC (Hi setting), and jump across (bypass) the low side pressure switch - to allow the compressor to start running and draw the freon in through the low side - make sure your fittings are correct and otherwise - Did you pull a vacuum on the system before you attempted to add refrigerant? I would highly recommend it - removes air and moisture....

Aug 22, 2009 | 1996 Cadillac DeVille

1 Answer

2000 deville ac


When you turn the a/c on the clutch engages on the compressor pulley and spins with it,compressor clutches do fail,and the sound your desribing sounds like your problem.You can just have the clutch replaced for about $350 or goto a junkyard and buy one and have someone install it.Unfortuantly luxury cars are pricey regarding to parts.

Aug 10, 2008 | 2000 Cadillac DeVille

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