Weird heating problem - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 12-07-2008, 12:05 AM   #11
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Don't wake me, I'm off to bed.
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Old 12-09-2008, 03:35 PM   #12
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Thanks for the help ACG.

It looks like it must be a different system in the 97 bonnevilles as holding the off button and the up temperature didn't do anything.

Looks like I may have to have someone scan it for me and tell me what is wrong.

Thanks for your help.
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Old 12-09-2008, 04:25 PM   #13
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Where are you located?
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Old 12-10-2008, 05:23 PM   #14
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I am in Canada, Ontario
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Old 12-10-2008, 05:36 PM   #15
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Kind of far from me. I'll try to go threw my FSM this weekend when I have some free time.
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Old 01-08-2009, 07:07 PM   #16
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Fixed

Stupid Air Mix Actuator. I just took the rod off of the white arm. Now I got lots of heat, but I can't control it.

Oh well...better heat then no heat right?

Thanks for your help guys.

Take care
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Old 01-09-2009, 10:09 AM   #17
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Water leaking on the floor? Either the A/C evaporator drain is plugged or you have a leaking heater core. Does the A/C work?

Our canadian winters are pretty cold, so it might not hurt to toss in a new thermostat, and flush out the heater core if you still are not getting much heat.

Sure the blend door actuator rod isn't misadjusted? Seems the actuators are a common problem..
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Old 01-10-2009, 05:18 PM   #18
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I remember reading somewhere that if your air mix actuator is fine but is sending the wrong temp control to the vents than it'* just needing a recalibration.

I'll dig around for this procedure. Hate to have you not have control over your heat.
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