Question about 1992 Buick LeSabre

1 Answer

A.c. will not come on

Checked the two fuses on the car and jumper the low pressure and high pressure switch tested the coil on the a.c. unit. The fan motor runs but could not find a a.c. relay and the fan on the cooling system only runs off the temperature control but not when the a.c. is switch on . could not find a wiring digram of the system.

Posted by on

1 Answer

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 3 Answers

The a/c relay is out under the hood on the firewall with several other relays. The problem is probably the body control computer, or the a/c selection switch.

Posted on Aug 12, 2008

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

How to replace coolig fan sending unit on a 2008 chevy uplander


Why ? Did you test ? Hook up a scan tool to see if the PCM/ECM - engine computer is reading coolant temp. ? Testing not guessing ? Do you even know how the system works .

The engine cooling fan system consists of 2 electrical cooling fans and 3 fan relays. The relays are arranged in a series/parallel configuration that allows the engine control module (ECM) to operate both fans together at low or high speeds. The cooling fans and fan relays receive battery positive voltage from the underhood fuse block.
During low speed operation, the ECM supplies the ground path for the low speed fan relay, which is Fan 1 Relay, through the low speed cooling fan relay control circuit. This energizes the low speed fan relay coil, closes the relay contacts, and supplies battery positive voltage from Fan 1 Fuse 29 through the cooling fan motor supply voltage circuit to the left cooling fan. The ground path for the left cooling fan is through the Series/Parallel relay, which is the Fan 2 Relay, and the right cooling fan. The result is a series circuit with both fans running at low speed.
During high speed operation the ECM supplies the ground path for the low speed fan relay through the low speed cooling fan relay control circuit. The ECM supplies a ground path for the high speed fan relay, which is the Fan 3 Relay, and the Series/Parallel through the high speed cooling fan relay control circuit. This energizes the Series/Parallel relay coil, closes the relay contacts, and provides a ground path for the left cooling fan. At the same time the Fan 3 Relay coil is energized, the relay contacts close to provide battery positive voltage from Fan 2 Fuse 33 on the cooling fan motor supply voltage circuit to the right cooling fan. During high speed fan operation, both engine cooling fans have their own ground path. The result is a parallel circuit with both fans running at high speed.
When the request for fan activation is withdrawn, the fan may not turn OFF until the ignition switch is moved to the OFF position or the vehicle speed exceeds approximately 10 mph. This is to prevent a fan from cycling ON and OFF excessively at idle.

Feb 27, 2017 | 2008 Chevrolet Uplander

1 Answer

How to fine radior fan switch on 2002 ford focse


Located lower driver side corner of radiator. To check, a test light will help. Disconnect the harness from sensor, with test light find the power wire. Other terminals will be your low/high temp. circuits. You can use jumper wire from power terminal and connect to to either the low or high. If fans run, could be your sensor that's bad. If no power present on harness to begin, check fuse.

Nov 06, 2016 | Ford Cars & Trucks

1 Answer

Car a/c not working


Hard to say with just low pressure readings. But either the high pressure switch is bad or you are low on freon. If you want to know what is wrong I need the temperature of outside air, the low pressure reading and the high pressure reading as the compressor is running. But this only tells you ta particular problem. It won't tell you if you have a leak. This you have to find out on your own.

Jun 09, 2015 | 2001 Ford Escape

1 Answer

Condenser fan not engaging


Possibly low on refrigerant. When system is low on freon, it does not build up enough high side pressure to engage the condenser fan . When pressure is high enough. a high side pressure switch kicks on the cond. fan to maintain high side pressure. Have the system evacuated and recharged to proper level.

Feb 01, 2014 | 1996 Mercedes-Benz C-Class

1 Answer

Condenser fan not engaging when A/C turned on. All fuses and relays look fine. Tested fan with eternal power and it runs.


Possibly low on refrigerant. When system is low on freon, it does not build up enough high side pressure to engage the condenser fan . When pressure is high enough. a high side pressure switch kicks on the cond. fan to maintain high side pressure. Have the system evacuated and recharged to proper level. A system dye can be added to check for any possible leaks.

Feb 01, 2014 | 2004 Isuzu Rodeo

1 Answer

My 2000 vw beetle has a problem with the a/c. I just replaced the cooling fans and now the a/c will run for a while then blow the fuse. It has already melted the fuse box where the fuse plugs in. I pulled...


Yes! I almost sure
I know what is grounding or Why????
A/C compressor COIL is broken!
As this coil works with static energy, once broken, the voltage gets through the compressor body.
I think that's most posible cause. Hope this helps and good luck!

'

Jul 06, 2011 | Volkswagen New Beetle Cars & Trucks

1 Answer

Ac compressor does not come on. I checked all recommended fuses. Pressure on low side is in red (High) Thank you


Assuming something works can sometimes steer us in the wrong direction, but if the fans are working, this is either a high pressure issue or a bad coil on the compressor. Do you have a test light or volt meter? If so, we can test the compressor coil and narrow it down.

Mar 23, 2011 | 2003 Honda Element

1 Answer

1997 Linclon car No power to A/C clutch.


take the pressure switch connector off and jump connector- if clutch engauges you either have bad low pressure switch or are low on freon.

Aug 25, 2009 | 1997 Lincoln Town Car

1 Answer

Air conditioning comp not turn on


if you used a pressure washer ,you could have caused a leak ,if there is no freon the low pressure switch wont let the compressor turn on,even if you didnt use high pressure,engine degreaser may remove corrosion on the line set or the condenser ,also causing a leak, the high or low pressure switches may still be wet, follow the line set ,fat line (low pressure switch with a plug w/2 wires)unplug it make sure its not still wet inside,do the same to the high pressure switch on the small line,check the fuses ,pull the ac relay make sure there is no water underneath,and the prongs are dry,if the blower fan in the vechile isnt working on 2,3,or 4 speed it wont let the ac turn on,if all that checks out ,turn the fan on high max ac unplug the green wires or wire on the compressor right behind the belt pulley,check for 12v dc,if none,you lost a relay or one of the pressure switches,fuse,maybe broken wire,if 12 v. is there,your clutch coil fried on the compressor pulley,good luck, hope you figure it out

Jul 07, 2009 | 1998 Jeep Grand Cherokee

2 Answers

A/c fan blows, but compressor does not come on. Freon not low. All fuses ok. No voltage


theres a switch on the drier called low pressure switch it usually goes bad and doesnt allow power to go to compressor to test it unplg it and jumper the two wires togather. if it works theres your problem

May 05, 2009 | 1999 Chevrolet Suburban

Not finding what you are looking for?
1992 Buick LeSabre Logo

Related Topics:

61 people viewed this question

Ask a Question

Usually answered in minutes!

Top Buick Experts

yadayada
yadayada

Level 3 Expert

70387 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22041 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

6878 Answers

Are you a Buick Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...