Heater Not Working Options

[Stu37363]

My heater used to work great...

Now the air it blows is cold-room temperature at best

if i turn it off for a minute and turn it back on i get hot air for a second and then it goes cold again...

any ideas? possible causes and solutions?

[manphibian]

Does the water Temp gauge reach the middle quickly or not?

If not, probably thermostat gone. That's pretty common....

[Stu37363]

Does the water Temp gauge reach the middle quickly or not?

If not, probably thermostat gone. That's pretty common....

no, its actually been running cold lately. so that sounds like the thermostat?

its been getting up to around 1/3 at the most, been around 1/4 most of the time though

So your thinking the thermostat is stuck open and the water isnt getting hot enough?

where is our thermostat located?

This post has been edited by Stu37363: Jan 14, 2009 - 3:15 PM

[manphibian]

Does the water Temp gauge reach the middle quickly or not?

If not, probably thermostat gone. That's pretty common....

no, its actually been running cold lately. so that sounds like the thermostat?

its been getting up to around 1/3 at the most, been around 1/4 most of the time though

Definitely thermostat. It gets stuck open, so all the water is free to go into the radiator.

Not 100% sure where it is located on your engine, but on the 3S-GE, it's just below the alternator, follow the top radiator hose into the engine block, and it's there.....

Someone will confirm.

Not a difficult job.