HEATER CORE PROBLEM

1994 Geo Prizm

Tiny

mcda1953

November, 10, 2010 AT 11:48 AM

Heater problem
1994 Geo Prizm 4 cyl Two Wheel Drive Automatic 212000 miles

I recently installed a new head with all new hoses, thermostat, radiator etc. Before the heater would not heat at engine idle. Worked ok on the road. Now it doesn't heat at all. I checked the input and output ports on the firewall. I do have hot water going into the heater core and returning. I also tried running water both ways thru the heater core with a garden hose. It runs thru clear and clean. There are no leaks at all. Any idea what might be the problem? Your thoughts will be greatly appreciated.
Thanks

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2 Answers

Tiny

Docfixit

November, 10, 2010 AT 12:03 PM

Blend door not directing air flow through core

Tiny

mcda1953

November, 14, 2010 AT 11:42 PM

Thanks that fixed the problem. I really appreciate it.

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