OK well about a few months ago, my mechanic and I bypassed and removed the heater control valve and rerouted the hoses to makes my heater work thinking my A/C doesn't work, today i tried my A/C and it's cold. question is do I need my heater control valve to run my A/C and is it safe? will it cause and damage to anything? thanks cl. I have a 92 SC400 btw.

 

I bypassed mines like 2 years ago... Ac and heat still work No problems dont worry about it lol.

 

Bumpppppppp

 

thanks scviolence. so whats the heater control valve used for? so did you remove yours also?

 

Bumpppppppp

 

Heater control valve controls the heat it opens and closes. Now that it is bypassed if you notice the heat is never really off you can still feel the heat comming out the vents when you drive. As for problems I haven't run into any at all and it's been a whole year like that.

 

Did you bypass the whole valve or swap the vacuum line? When it gets warm out, just swap the vacuum line back to how it was and you're in good shape.

 

No I left the vacuum lines connected to the heat control valve and bought a cheap 2$ pvc pipe at auto zone and just removed the 2 main lines and ran the to the PVC pipe.

 

i removed my heater control valve.