1995 Pontiac Bonneville
V6 3800
codes = no
tech = JK
question = When I turn on the heater, it only blows out cool air. I can
hear the air pressure drop when I switch the temp. control from cold
to hot. What could my problem be?
JK:
Hello and welcome. This sounds like the heater core is plugged up. With not
enough coolant flowing through the core, the air temp. won't get hot enough. This
is as long as the temp door in the dash is moving and the coolant level is full.
V6 3800
codes = no
tech = JK
question = When I turn on the heater, it only blows out cool air. I can
hear the air pressure drop when I switch the temp. control from cold
to hot. What could my problem be?
JK:
Hello and welcome. This sounds like the heater core is plugged up. With not
enough coolant flowing through the core, the air temp. won't get hot enough. This
is as long as the temp door in the dash is moving and the coolant level is full.
WARNING LIGHTS
1999 Pontiac Bonneville 3.8.
A/C clutch will not engage.
I recharged the system and weighed in the new charge. Fuses are OK, I tested the Clutch relay and it works
on the bench. My book is telling me a "Powertrain Control Module" grounds the Clutch but it doesn't tell me
where it is and my diagnostic tester (Actron CP9580) does NOT pull up A/C codes. The clutch on the
compressor functions when I cheat the circuit at the rely and it does get cold. Any Help?
How found us = Random search on Ask.com.
Question: Info above in Listed repairs. This has been intermittent for a few months now and this past week it
just threw in the towel. Clutch will Not engage in any of the functions including Defrost.
A/C clutch will not engage.
I recharged the system and weighed in the new charge. Fuses are OK, I tested the Clutch relay and it works
on the bench. My book is telling me a "Powertrain Control Module" grounds the Clutch but it doesn't tell me
where it is and my diagnostic tester (Actron CP9580) does NOT pull up A/C codes. The clutch on the
compressor functions when I cheat the circuit at the rely and it does get cold. Any Help?
How found us = Random search on Ask.com.
Question: Info above in Listed repairs. This has been intermittent for a few months now and this past week it
just threw in the towel. Clutch will Not engage in any of the functions including Defrost.
Answer: Yes, the PCM grounds the clutch relay. It is located inside the air
cleaner box. You would need a schematic to check the proper wires to see if
the PCM is actually grounding the relay. It does sound like the computer is the
problem though.
cleaner box. You would need a schematic to check the proper wires to see if
the PCM is actually grounding the relay. It does sound like the computer is the
problem though.
Download Our New Automotive E-Book Learn More
