heater problem

[jeffseal]

I just changed my thermostate in my 95 exploder and now my heater is actin funny.

it only puts out hot air when i am on the throttle seems like it is only using heat from the motor....

any ideas?

 

[TPLYNCH]

Is your temp gauge fluctuating at all??? Check your vacuum connection on the Heat Bypass Valve. It may be a vacuum issue.

 

[jeffseal]

yeah my heat guage if fluctuaging.

heat bypass valve????? where is that?

 

[RiverRat]

If the heater was fine before the coolant change then check for air in the system. Make sure to have the heat on full and run the engine for a couple minutes at 1500-2000 rpm or untill the t-stat opens.

It should circulate the coolant and help get the air out.

The heater bypass valve is just under the hood, passengers side, near the heater core. Look for a plastic valve with the heater hose attached.