Question about 1993 Geo Tracker
I believe you have one of two problems either your heater core is plugged up and not allowing enough flow or the temperature blend door located under the dash is not moving.The heater core is easy to check,A quick check of the heater core is with the engine running and with the blower motor off or on low carefully chck to see if both heater hoses are equally hot if not remove them from the heater core and use a garden hose to backflush it the blend door can be more of a hassle as it can be operated by a motor or vacuum servo and even a simple cable these also have been known to break but with the blower on high change the temp control from cold to hot and see if you can hear a change in the sound of the blower and sometimes you can hear the door shut it more than likely the door is ok but you will need to check it and see.
Posted on Oct 07, 2008
This may not be the problem you are having but it may help you or others. I have a 140,000 mile 99 Metro 3 cyl, 5 spd. without AC. The heating system produced hot air but the air was not being distributed properly. There was not a lot of air flowing from the vents, floor, or defroster outlets. It was almost as if there was an obstruction. It was drafty and the windows would fog up. When the fresh air intake was open,instead of blending the fresh air withe the heated air, the cold outside air would come in and blow around separately. What I found was that a large piece of ductwork had come undone under the dash on the passenger side. There was also a small air hose that had come undone. It all snapped into place and now the heater puts out like a blast furnace and my defroster works a lot faster in the morning. I can't wait for January just to really try it out.
Paul form Phoenixville, Pa. just 30 miles west of the only rain delayed World Series game ever. (It snowed the next day)
Posted on Oct 31, 2008
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Posted on Jan 02, 2017
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