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Anonymous
Anonymous Posted on Mar 15, 2012
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1991 buick a/c problems

Can not charge a/c. compressor surges on and off a few times and then check a/c light comes on.

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Anonymous

  • 2 Answers
  • Posted on Aug 04, 2008

SOURCE: 1996 Buick Le Sabre. 3.9

my light went out after i replaced egr valve---twice--then came back on....then i had a fuel system "clean out" done by national chain...light went out--milage went up--GOD BLESS AMERICA!!

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Ronny Bennett Sr.

  • 6988 Answers
  • Posted on May 28, 2010

SOURCE: I have a 2005 Buick Rainier. The A/C unit has a

The ac system has to be reset,removal of the fuse for the ac,will do this,leave it out for about 10 seconds then replace it,removal of the negative battery cable will most likely do it,but,the computer for the vehicle might loose it`s memory if you do this,unless you have had the battery out before,and know that it will not,after reseting the ac system,have the ac gauges put on the car,and see what the readings will tell,there is a problem there somewhere or the ac system would not shut down,the system while not running,it is hard to tell if there is enough freon ,or not,but check it with the gauges to tell for sure what the problem is.

Anonymous

  • 3 Answers
  • Posted on Jun 07, 2011

SOURCE: 1991 Buick Park Avenue air

You have a restricted hose, the oriface tube is probably plugged.

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1991 GMC C1500, 5.7 liter 350. Why is my A/C and heat are causing my engine to surge?.
If the operation of your A/C and heat is causing your engine to surge in your 1991 GMC C1500 with a 5.7-liter 350 engine, there could be a few possible causes for this issue:
  1. Engine Load: The A/C and heat systems place an additional load on the engine, especially when the compressor engages. This extra load can affect the engine's idle and cause surging. It's possible that the engine is not able to handle the increased load, leading to fluctuations in RPM.
  2. Idle Control System: The idle control system, including the idle air control valve (IAC), may be malfunctioning or not compensating properly for the increased load when the A/C or heat is turned on. This can result in unstable idle and engine surging. The IAC valve may need cleaning or replacement.
  3. Electrical Issues: Faulty electrical connections, such as loose or corroded wires or connectors, can cause intermittent power supply to the A/C and heat systems. In turn, this can lead to fluctuations in engine performance, including surging.
  4. Vacuum Leaks: Check for any vacuum leaks in the A/C and heat system components, as well as the engine's intake manifold and vacuum lines. Vacuum leaks can disrupt the engine's air-to-fuel ratio, leading to unstable idle and surging.
  5. A/C Compressor Issues: The A/C compressor itself may be malfunctioning, causing excessive drag on the engine. This can result in surging when the A/C is engaged. A faulty clutch, compressor bearing, or internal component may be the cause.
  6. Engine Performance Issues: Other underlying engine performance problems, such as ignition system issues, fuel delivery problems, or worn-out engine components, can contribute to surging when the A/C or heat is in use.
To diagnose and resolve the issue, it is recommended to consult a qualified mechanic or an automotive technician who can perform a thorough inspection of your vehicle. They will be able to assess the specific conditions and components involved, perform necessary tests, and identify the root cause of the surging problem.
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Jul 10, 2023 • GMC Cars & Trucks
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What would cause my 1994 buick park ave to surge when i put on the brakes after it warms up
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Sep 02, 2015 • 1994 Buick Park Avenue
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1991 buick century battery light on
Charge your battery and have it tested. Most part stores will do this for you at no cost. I'm leaning towards an alternator issue but it is possible that it could be both the battery and the alternator. Even if it's just the alternator the battery should be fully charged as a discharged battery can damage the alternator.
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Jul 08, 2012 • 1991 Buick Century
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1991 Buick Park Avenue air cond is fully charged yet the air will not run. All plugs and fuses have been checked. plenty of freon, the compressor kicks on when car is started, line gets cold and then it...
You have a restricted hose, the oriface tube is probably plugged.
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Jun 07, 2011 • 1991 Buick Park Avenue
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Buick park avenue engine start problem
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Apr 20, 2010 • 1991 Buick Park Avenue
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Howdo i no if my compreesor on my airshock work for
You can disconnect the level control switch,which should be, possibly on the right rear lower control arm. Then turn the key on,and move the switch arm up or down. The compressor should come on and raises the car. You can also adjust it, but only a little. You should hear the compressor,every time you start the car. It can be running and waiting for the need to inflate the rear air struts.
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Feb 17, 2010 • 1991 Buick LeSabre
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There is is a strage problem with my 1991 regal
orfis in the accumulator may be clogged.
don't fill with feon bottle upside down(liquid), it will damage the comp.
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Jul 05, 2009 • 1991 Buick Regal
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Service engine soon light came on and does not go out
under the dash you will find a diagnostic port however there are only a few wires going to it,on the top of the port there are two wires side to side take a peace of wire and make a jumper, jump the two wires that are side to side. turn the switch on and count how many times the check engine light blinks it will give you code 12 three times and then the code after that is what is making your car sick. hope this has helped you !

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May 30, 2009 • 1991 Buick LeSabre
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"Service A/C" dashboard light
This light indicates the AC compressor is turning off and on (cycling) to often in a set period of time, this is caused by a low system charge, you need to have your system checked for leaks and then topped off, in most cases the light comes on before the system stops cooling.
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Mar 23, 2009 • 1991 Buick Reatta
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Engine light and battery light come on at same time and speed up
You need to Check the Belt and Belt Tensioner. If the Tensioner is not keeping the Belt Tight it will not allow the Battery to Charge and will result in the Lights among other Critical Things Going Wrong. Please Rate my Response, I need all the Help I can get! Thanks!
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Jan 26, 2009 • 1991 Buick LeSabre
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1991 GMC C1500, 5.7 liter 350. Why is my A/C and heat are causing my engine to surge?.

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