Heater Problems- Read every post...
Ok I got a 2001 Blazer Lt and am having heating issues. Here is the deal: when I am at normal temperature range (right below 210) the heater blows cold air at idle to around 2000rpm. However, when i am at 2000rpm (roughly) and above it will blow hot air.
Here is what I've done: I checked the inlet hose to the heater core and it was hot, checked the outlet hose it was warm. SO... I did a backflush to the heater core to flush anything out, but I didn't see any junk come out. Just water mixed with anti-freeze and then just clear water. The water came out the same pressure as I put in. So i blew out the remaining water... filled up with anti-freeze again. Ran the engine again.. checked levels.. good. I am not sure what the cause of the problem may be beeing as I get hot air at over 2000rpm... Any suggestions? Anything that I am overlooking? |
RE: Heater Problems- Read every post...
Oh, also it is manual temperature control..
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RE: Heater Problems- Read every post...
I would say air in the system or a defective heater door... Do you have any vacuum leaks? Does your HVAC system work on all modes?
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Try back flushing the heater core and then if it still does not work try running a water hose over your thermostat housing with the rad. cap off for a few min.Keep your rpm around 1500-2000 and this should help purge the air out of the system.Just went through same thing on a 2001 Prism
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