Problem with my 2001 Oldsmobile Aurora
3.5 v6
GM Computer codes- no
Repair work done prior. New engine, cooling system, transmission (all from dealer
under warranty.
tip/donation yes
GM tech = kk
question = My air conditioning system does not work. The the hvac controls light up but
the compressor does not engage. I checked all the fuses that I could find that are
related to the HVAC system and they are all fine. Also under the front driver side
carpeting, it is soaked with water. I don't know if this problem is related or not, but I
thought maybe it could be a leak related to the evaporator. I checked the r134 level
and that seams fine. What i would like to know is first of all where I would be able to find
the evaporator if you think that might be the issue(or at least part of it. Also what else
should i be looking for to Diagnose and repair the problem. Could it be a relay and if
so, how can I check to make sure it/they are working correctly? Keep in mind the
compressor pulley is rolling it's just not engaging the system. I can't find any leaks
anywhere else underneath the car or any funky odors. Thanks in advance for your help.
KK:
Did this A/C problem occur right after all the work to engine, etc. was done?
If so, i would suggest calling the dealer and tell them that the A/C does not work since
repairs were made. They should check it out for you for free. Yhey may have just left
something unplugged, or possibly pinched a harness.
If not, then i can get you a schematic to use with a test light and volt / ohm meter to
assist in diagnosis.
First, The A/C CLU fuse and the A/C CLU relay in the underhood fuse block are the first
things to check. An easy way to check a relay is to swap it with another of same type
and n umber of terminals with another in that fuse block.
There is also a pressure switch on the back of the compressor- Make sure that is
plugged in.
Also a pressure sensor on the line off the back of the compressor- make sure it is
plugged in.
The Powertrain computer (PCM) controls the relay to engage the clutch when it is
requested.
I will send out a schematic if you would like ...
3.5 v6
GM Computer codes- no
Repair work done prior. New engine, cooling system, transmission (all from dealer
under warranty.
tip/donation yes
GM tech = kk
question = My air conditioning system does not work. The the hvac controls light up but
the compressor does not engage. I checked all the fuses that I could find that are
related to the HVAC system and they are all fine. Also under the front driver side
carpeting, it is soaked with water. I don't know if this problem is related or not, but I
thought maybe it could be a leak related to the evaporator. I checked the r134 level
and that seams fine. What i would like to know is first of all where I would be able to find
the evaporator if you think that might be the issue(or at least part of it. Also what else
should i be looking for to Diagnose and repair the problem. Could it be a relay and if
so, how can I check to make sure it/they are working correctly? Keep in mind the
compressor pulley is rolling it's just not engaging the system. I can't find any leaks
anywhere else underneath the car or any funky odors. Thanks in advance for your help.
KK:
Did this A/C problem occur right after all the work to engine, etc. was done?
If so, i would suggest calling the dealer and tell them that the A/C does not work since
repairs were made. They should check it out for you for free. Yhey may have just left
something unplugged, or possibly pinched a harness.
If not, then i can get you a schematic to use with a test light and volt / ohm meter to
assist in diagnosis.
First, The A/C CLU fuse and the A/C CLU relay in the underhood fuse block are the first
things to check. An easy way to check a relay is to swap it with another of same type
and n umber of terminals with another in that fuse block.
There is also a pressure switch on the back of the compressor- Make sure that is
plugged in.
Also a pressure sensor on the line off the back of the compressor- make sure it is
plugged in.
The Powertrain computer (PCM) controls the relay to engage the clutch when it is
requested.
I will send out a schematic if you would like ...
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Problem With My Air Conditioner on Oldsmobile Aurora
Repair Help by Expert Oldsmobile Mechanics