Mechanics

HEATER

Mazda 626

My heater only blows cold to warm air. Never gets hot. I replaced thermostat. Flushed radiator put new antifreeze in. No leaks. What else is there to check. Its a 1990 Mazda DX626 2.2L 4 banger no turbo. If it has a heater control valve tell me where it is or where it should be. Thanks!
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10foTuck
January 12, 2006.




It might not have one. The blend door under the dash could be the problem. Sometimes pens and the such fall in the vents and cause door problems
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Tiny
Jack42
Jan 18, 2006.
I put some cardboard in front of radiator and guess what? Heater and defroster getting hot air again. So what do you think know?

Tiny
10foTuck
Jan 19, 2006.
Also I drove it home from work about 15 mi. Or so and there was no pressure on the radiator cap when I opened it while car was running. I replaced that as well when I replaced thermostat.

Tiny
10foTuck
Jan 19, 2006.

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