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Heat not working in '95 Grand Prix GTP.


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mp2008
Novice

Mar 10, 2012, 11:31 AM

Post #1 of 3 (2152 views)
Heat not working in '95 Grand Prix GTP. Sign In

Vehicle:
1995 Pontiac Grand Prix GTP. 3.4 L DOHC. 130,000 Miles.

Problem: Lack of heat. There is a little heat but not nearly what it should be. Seems to be just a little warmer(not nearly enough) when the blower is not turned full blast.

Tried: I replaced the Thermostat which fixed my car running a little hot but didn't fix my heat. I'm not losing any fluid so I don't think its my heater core.

Any suggestions on what to check next?

Thanks, MIKE


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Mar 10, 2012, 11:48 AM

Post #2 of 3 (2148 views)
Re: Heat not working in '95 Grand Prix GTP. Sign In

With the engine at full operating temp, locate the 2 heater hoses where they go into the firewall and feel them to see if they are both hot to the touch. If they are both hot, the heat in that vehicle is controlled by a blend door that regulates heated air flow. it is operated by an electric motor/actuator. The problem can be that the actuator is stripped or inoperative or the door itself could be damaged. This is what needs to be determined by examining the actuator and see if it is responding to heat change commands or not.



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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



mp2008
Novice

Mar 10, 2012, 12:32 PM

Post #3 of 3 (2129 views)
Re: Heat not working in '95 Grand Prix GTP. Sign In

Thanks, I'll check it out and update. I did find a pretty helpful link(after posting on here) for troubleshooting heat problems if anyone else is interested.
link deleted............. not allowed


(This post was edited by Hammer Time on Mar 10, 2012, 12:47 PM)






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