My car only has heat when i drive but when i idle it starts to get cold. i know its not the thermostat so what else could it be?

 

You say it's not the thermostat, but replace it anyway. Burp the coolant system by getting all air bubbles out.

 

at first i thought you where trying to tell us that your car wasnt producing heat, didnt know you ment the heater! haha.


good luck finding an answer!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by poison &raquo;</TD></TR><TR><TD CLASS="quote">You say it's not the thermostat, but replace it anyway. Burp the coolant system by getting all air bubbles out. </TD></TR></TABLE>

i swapped the engine thats why i say its not the thermostat cuz it was fine in the other car. i think it might air in the system. Whats the best way to get all the air out?

 

what kind/year motor?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by vtec25 &raquo;</TD></TR><TR><TD CLASS="quote">

i swapped the engine thats why i say its not the thermostat cuz it was fine in the other car. i think it might air in the system. Whats the best way to get all the air out?</TD></TR></TABLE>

Are we talkin the same engine?

To burp the coolant system, just fire it up when it's cold with the radiator cap off, and let it sit idling until normal operating temp and let all the air bubbles come out of the top of the radiator. Then put the cap on.

I would still replace the thermostat

 

umm....do you have the recirculation button for your climate controls on?
if it's off the car usually has shitty heat at idle.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by poison &raquo;</TD></TR><TR><TD CLASS="quote">

To burp the coolant system, just fire it up when it's cold with the radiator cap off, and let it sit idling until normal operating temp and let all the air bubbles come out of the top of the radiator. Then put the cap on.

I would still replace the thermostat</TD></TR></TABLE>

Should probably have the heater cranked on full blast as well. Correct me if im wrong.

 

ok blurped the system. no dice. i just saw that the radiator has a bad hit in the middle cout cause it?