Question about 1992 Buick Roadmaster

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Air conditioning compressor does not operate

Air conditioning compressor will not engage when ac is selected on ac-heater control

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Check the fuse to see that it is still good. It is possible that the compressor is out of freon and can't engage because the level is too low to keep it from burning up.

Check to see if the clutch engages (the small wheel on the face of the pulley) when you turn the switch on and with the motor running.

Look under the hood and if you see black or dark brown stains over the area where the compressor is mounted, you likely have a leak that needs to be fixed.

Posted on May 30, 2010

  • nikkileone Oct 17, 2010

    is the compressor boken if there is a brown stain?

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1998 honda accord 3.0. compressor clutch is engaged, pressures are normal and get 60f at ac vents. Needs some ideas


60f is 15 c which is good for a vehicle ac unit
the lowest setting approaches 12 c and that is for an ac in excellent condition
you can help by closing the external vent so that the cabin air gets colder by recirculation
clean the fins of the evaporator under the dash,
tint the car windows all round except the windscreen
if you have climate control shut off the heater operation as well

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Engine quits when ac turned on compressor unplugged


Knowing make model and year would help. Most newer vehicles, 2000 and newer, will adjust the idle control up to compensate for the compressor engaging. Possible there is an issue in the idle air control valve or electrical circuit.

Mar 14, 2017 | 2003 Ford Focus

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I have a 2005 Scion XA and I am experiencing a noise when I turn on the fan wanting to kill the engine, sqweaking and engine light came on. it lurches forward barely made it home at 45mph. belts seem...


Sounds like you have an air conditioning compressor tying up. The compressor does not engage when the fan is turned all the way off. If you turn your heater control away from the ac setting (keeping in mind the ac comes on automatically when in defrost mode) and it does not have those symptoms, that is where your problem is.

Aug 17, 2011 | 2005 Scion xA

1 Answer

I have a 1993 Chevy S-10 4.3L automatic. The heat won't shut off. It pours out regardless of the position of the climate controls. Coolant level and condition good. AC would work but. Thanks.


#46-12-03: AIR CONDITIONER BLOWS WARM AIR (REPLACE A/C DELAY RELAY) - (Apr 7, 1994) 999999995.gif REVISION: 04/14/94
THIS BULLETIN IS BEING REVISED TO CORRECT THE TRANSMISSION LISTED IN THE MODELS. ----------------------------------------------------------------------
SUBJECT: AIR CONDITIONER BLOWS WARM AIR (REPLACE A/C DELAY RELAY)
MODELS: 1994 CHEVROLET AND GMC TRUCK S/T PICKUP WITH 4.3 ENGINE (VIN Z - RPO LB4), 4L60E TRANSMISSION (M30) AND AIR CONDITIONER/MANUAL CONTROLS (C60); OR 4.3 ENGINE (VIN W - RPO L35) AND A/C (C60)
BUILT BEFORE THE FOLLOWING VIN BREAKPOINTS:
PLANT DIVISION VIN LINDEN GMC RK501034 SHREVEPORT GMC R8501199 SHREVEPORT CHEVROLET R8105893 LINDEN CHEVROLET RK103097
CONDITION:
SOME OWNERS MAY EXPERIENCE A CONDITION WHERE THE AIR CONDITIONER IS TURNED ON AND DELIVERS ONLY WARM AIR.
CAUSE:
THE AIR CONDITIONER COMPRESSOR MAY DELAY LONGER THAN THE "ORIGINAL DESIGN" INTENDED 12 SECONDS, OR MAY NOT ENGAGE, DUE TO THE POSSIBLE MALFUNCTION OF THE COMPRESSOR DELAY RELAY.
CORRECTION:
TRUCKS BUILT BEFORE THE VIN BREAKPOINTS LISTED ABOVE MAY NEED A NEW AIR CONDITIONER DELAY RELAY. REPLACE ONLY WITH 15990540 AIR CONDITIONER COMPRESSOR DELAY RELAY. SPECIFIED PROCEDURE IN SERVICE MANUAL NATP 9429, PAGE 1B-59. TEST AIR CONDITIONER OPERATION FOR DELIVERY OF COOL AIR.
NOTE:TO TEST FOR PROPER OPERATION, PUT THE A/C CONTROL ON THE "OFF" POSITION, START THE ENGINE, THEN PLACE THE A/C CONTROL IN THE "ON" POSITION. THIS SEQUENCE WILL PROVIDE IMMEDIATE ENGAGEMENT OF THE AIR CONDITIONER COMPRESSOR. WHEN THE ENGINE IS STARTED WITH THE A/C CONTROL ALREADY "ON", THERE WILL BE A NORMAL 15.0 SECOND DELAY FOR THE AIR CONDITIONER TO ENGAGE.
SERVICE PARTS INFORMATION:
P/N DESCRIPTION QTY
15990540 A/C COMPRESSOR DELAY RELAY 1
PARTS ARE CURRENTLY AVAILABLE FROM GMSPO.

Jul 29, 2011 | 1994 Chevrolet S-10 Blazer

2 Answers

Car dies when air conditioning engades


Air conditioning compressor pump has seized.

Jun 04, 2009 | 2001 Mitsubishi Montero Sport 4WD

3 Answers

Air conditioning blowing hot air


ok could be one of 3 things. 1 you may be out of freon. (proly spelt that wrong) 2. compresser could be bad. 3 the clutch on your compresser might not be engaging. when trucks running turn ac on and see if the front of your compresser spins or not. if it does clutch is good. but it could be that your compresser is still bad. either way i recomend you go for freon and start there. when they fill it they will tell you for sure wether or not your compresser is bad.

Apr 29, 2009 | 2004 Ford Explorer

1 Answer

2001 ford focus defroster blows out ac vents


may be just a cable adjustment.


SECTION 412-01: Air Distribution and Filtering 2001 Focus Workshop Manual DESCRIPTION AND OPERATION Air Distribution and Filtering The new heating and ventilation system ensures even air distribution.
The temperature control and air distribution flaps are controlled by two operating cables. All vehicles have a recirculated air function, with the flap controlled by a servo motor.
Air is supplied to the windscreen and side windows regardless of the air distribution setting.
The clean air filter is fitted as standard in most countries. This cleans the incoming fresh air of pollen and dirt particles. It must be renewed after every 40,000 km under normal operation conditions, or after 20,000 km under difficult conditions. If no clean air filter is installed, a plastic grille is fitted over the air intake. This can easily be replaced with a clean air filter.
Air distribution operating switch
Face level The main flow of air enters the passenger compartment at face level.
Face level/floor level The main flow of air enters the passenger compartment in equal parts at face level and floor level, and a small amount flows to the demister nozzles of the side windows.
Floor level The main flow of air enters the passenger compartment at floor level, and a smaller amount flows to the demister nozzles of the side windows.
Demist/floor level The main flow of air enters the passenger compartment in equal parts at the windscreen and at floor level, and a smaller amount flows to the demister nozzles of the side windows.
Demist The main flow of air enters the passenger compartment at the windscreen and a smaller amount flows to the demister nozzles of the side windows.
Air distribution operating switch Air distribution operating cables
NOTE: The Bowden cables for LHD and RHD vehicles are identical. However, they are fastened to the air flap operating mechanism with the respective reverse side of their connectors.
The air distribution switch operates with two Bowden cables. The cables operate the air distribution valves in the heater housing.
To remove and install the cables, the rotary switch must be turned as far as it will go to the left. The air flap mechanism engages easily in this position, making the installation of the cables easier.
--------------------------------
Air Distribution Cable Control Assembly Removal
s1y~us~en~file=ani_caut.gif~gen~ref.gif CAUTION: Disconnect the battery ground cable. For additional information, refer to Section 414-01 .
  1. Remove the radio/cassette unit and the CD player (if equipped). For additional information, refer to Section 415-01 .
  1. Remove the bezel with heater/air conditioning controls.
  1. Remove the bezel with heater/air conditioning controls (continued).
    • Pull off seven electrical connectors (six shown).
  1. NOTE: To remove the Bowden cables, turn the rotary switches as far as they will go to the left.
    Remove the bezel with heater/air conditioning controls (continued).
    • Unclip the Bowden cables.
  1. Remove the lower driver's side footwell trim.
  1. Unclip and remove the air distribution Bowden cables.
  1. Unclip and remove the temperature control Bowden cables.
    • Unclip and remove the temperature control Bowden cables.
Installation
  1. NOTE: Route the new Bowden cables without kinks and check for easy accessibility.
    NOTE: To install the Bowden cables, turn the rotary switches as far as they will go to the left. The mechanism engages easily in this position.
    NOTE: The Bowden cables are identical for RHD and LHD vehicles, although they are fastened to the air flap operating mechanism with the reverse side of their connectors.
    Install the components in reverse order.
  1. Check operation of the Bowden cables.

Mar 17, 2009 | 2003 Ford Focus

1 Answer

Screeching noise, then a/c stops blowing cold air. Still blows air, just not cold air.


it could be the air conditioning clutch going out. to check turn your car on and idle it with ac on and hood open. at the ac compressor it will have a pulley on it with a clutch that engages when the air conditioning is on. if it engages and disengages it can be the clutch itself has gone bad, the ac clutch will also disengage if there is not enough freon in the ac system, will also engage and disengage if the pressure gets too high in the ac system. Depending on the year of the vehicle it will disengage at full throttle and come back on when you are not at full throttle.
If it is a metallic sounding screech for example take a coke can and drag it across pavement kind of sound it could be a bad compressor or a bad ac clutch. If it is a more rubbery sound for example a car spinning its tires kind of noise it could be a loose belt.

1. Check to make sure all belts are tight under hood
2. start car and look at ac compressor to make sure compressor pulley is turning and that the fan clutch is engaged spinning


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1 Answer

Air conditioning


You need the AC mode/function switch to be replaced, it controls the different modes the AC/Heater are set to and where the air goes within the air ducts..

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