[91JDMSupra]

My heater doesn't like to work. Sometimes it would work, then sometimes it won't. Cold air just comes out. A/C and fan works ok. I've heard of a "heater control valve". Can that be the cause????? Where is that located???? Or perhaps should I change out the climate control unit with all the buttons???

 

[91JDMSupra]

Just bypass the electronic vacuum valve, it's almost surely dead. They crap out constantly.

Take the vacuum hose that leads to the electronic valve, and stick it directly onto the metal canister nipple. Enjoy the heat!

Ummm, stick it directly onto the metal canister nipple??? Are you refering to the charcoal canister??? or....?

 

[91JDMSupra]

Got it....would I still be able to control the heater via the climate controls???? or would the heater be always on now if I turn on the fan????