Question about 1991 Oldsmobile Cutlass Supreme
Ok I have a 91 oldsmobile that has digital everything and a heating pannel that does have button's to adjust or turn off or whatever I would need to do I can't turn my heat off at all , it stays on all the time . Sometime's if i'm lucky when it's really cold out like in the negative's I can adjust the temp but then it shut's off and then restarts and it's back to being really hot . I have no defroster so when i get in my car I have to try and crack my window's so it's help to unthaw them and after a half an hour waiting i can finally drive . Could it be maybe a wire is not connected correctly or my pannel is shot ?
Condenser Blocked From Putting Water In It
Put All Anti Freeze In it To The Top
Take The Cap Off While Its Running For 10 Minutes Is It Circulating,But Is Not Circulating From The Condenser?
Take The Hose Off Under The Dash,It Connects To The Condensor
Is It Dirty?
Posted on Apr 13, 2017
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Posted on Jan 02, 2017
Try flushuing the system and replacing the thermostat first, then if the problem persists have a shop do a test for a leaky head gasket, but do the easy cheap stuff 1st, only makes sense to me, how about you?
Posted on Oct 07, 2008
SOURCE: no heat 1995 cutlass ciera
Ok quick fix........
This is a common GM problem. The heater will stop operating when the plastic vacume line is broken under the hood. It is an 1/8 inch black plastic vacume line running fron the intake manifold to a vacume check valve under the hood to the heater/AC assy located to the passenger side. You may also want to check the fuses under the dash to the blower motor. If the fuse is good take a Digital multi meter and check for voltage at the motor. If there is no voltage check the reistat in the blower hosing. It is a small rectangle plastic piece on the blower housing with two small screws. Check for voltage at the input and output side. If there is voltage check for resistance at the motor by unpluging the blower motor and probing the terminals to the motor. Tap the motor and see what type of fluctuation you get. Lastly if all that checks out and you have no voltage to the motor or reistat check the switch input and all three fan speed outputs. It could be a simple switch issue.
Good luck and let me know if you need further guidence.
Posted on Jan 26, 2009
Have you checked the coolant level? If it is low, what you describe will happen, the engine will run hot, and the heat won't seem to work (coolant level too low to circulate through the heater core). Hope it's that simple, if not, let me know and I'll attempt to help further. Good luck!
Posted on Nov 17, 2009
Testimonial: "Hopefully that is the only problem with the coolant system. thanks for the tip, I appreciate it."
hav car scanned for any bad codes--could also be a vacuum leak on heater control--haynes sells a good repair manual with detailed steps
Posted on Jan 16, 2010
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