Jesterrace Posted June 8, 2007 Share Posted June 8, 2007 I know it sounds crazy at this time of year, but we just had a cold front move in recently, so I figure I will turn on the 'ol heater and test it out. I push the auto button on the climate control and am immediately hit with a max A/C blast. Even after getting it shut off and playing around with the settings, the best I could manage was about luke-warm and that was only after the car was well warmed up. Any ideas as to which it could be? *EDIT* It should be noted that the climate control unit's display is working perfectly and the A/C and vent work fine, it just doesn't put out heat like it should. Quote Link to comment Share on other sites More sharing options...
Jesterrace Posted June 8, 2007 Author Share Posted June 8, 2007 Guess it could also be a heater-core issue. I will find out which when it goes into the shop on Monday. :cries: Quote Link to comment Share on other sites More sharing options...
jzz30 Posted June 9, 2007 Share Posted June 9, 2007 the valve may not be opening all the way. either the electric motor or the valve is busted could also be your thermostat though... Quote Link to comment Share on other sites More sharing options...
Jesterrace Posted June 9, 2007 Author Share Posted June 9, 2007 *BLEEP*e, I bet that is spendy to fix. Probably not nearly as much as a whole new climate control unit though. Quote Link to comment Share on other sites More sharing options...
Jesterrace Posted June 11, 2007 Author Share Posted June 11, 2007 Good news. It ended up just being a vacuum hose. Both the heat and a/c are running solid now. :D Quote Link to comment Share on other sites More sharing options...
LLS Posted June 26, 2007 Share Posted June 26, 2007 pretty cool, I would have guessed a thermostat. Quote Link to comment Share on other sites More sharing options...
whitesnake SC400 Posted February 3, 2009 Share Posted February 3, 2009 Mine climate control is blowing only luke warm, which is not sufficient in winter. Heater valve solenoid control apparently wasn't providing any vacuum to open heater valve. I have bypassed solenoi control. Now i can see that valve is wide open but coolant lines that lead in and out of heater core are just slightly warm, so is the air. It must be thermostat. I'll go an change it in couple days unless club members suggest otherwise. Any comments please? Quote Link to comment Share on other sites More sharing options...
BillyShaft Posted February 3, 2009 Share Posted February 3, 2009 Sounds like you are on the right track! Quote Link to comment Share on other sites More sharing options...
DaveMcKenz Posted February 4, 2009 Share Posted February 4, 2009 Mine climate control is blowing only luke warm, which is not sufficient in winter. Heater valve solenoid control apparently wasn't providing any vacuum to open heater valve. I have bypassed solenoi control. Now i can see that valve is wide open but coolant lines that lead in and out of heater core are just slightly warm, so is the air. It must be thermostat. I'll go an change it in couple days unless club members suggest otherwise. Any comments please? I agree, sounds like thermostat. I would double check the coolant level. It can leak from the coolant reservoir, and just a little low on coolant will greatly reduce heater performance. Good luck, Quote Link to comment Share on other sites More sharing options...
whitesnake SC400 Posted February 4, 2009 Share Posted February 4, 2009 You are right. Coolant level is always the first thing to check. Coolant tank is full and i did bleed the system (running full heating cycle with coolant cap opened). I've found good remark in another thread how to diagnose thermostat. To identify thermostat stuck open you should squezze radiator-engine coolant line while engine is running cold. Coolant is not supposed to circulate via radiator during when engine is cold. If you feel pressure builds up within coolant line while you are squeezing it , then it mean that thermostat is stuck open. Quote Link to comment Share on other sites More sharing options...
DaveMcKenz Posted February 5, 2009 Share Posted February 5, 2009 You are right. Coolant level is always the first thing to check. Coolant tank is full and i did bleed the system (running full heating cycle with coolant cap opened). I've found good remark in another thread how to diagnose thermostat. To identify thermostat stuck open you should squezze radiator-engine coolant line while engine is running cold. Coolant is not supposed to circulate via radiator during when engine is cold. If you feel pressure builds up within coolant line while you are squeezing it , then it mean that thermostat is stuck open. Yep. Thermostats are designed with a safe failure mode, to fail stuck open. That way failure gives you a too cool engine not a too hot engine Quote Link to comment Share on other sites More sharing options...
whitesnake SC400 Posted February 6, 2009 Share Posted February 6, 2009 Issue is solved. I checked thermostat and it was stuck open. Replaced it. Coolant lines in engine bay are much warmer now. Climate control heats air much better now, i still wish it blew more hot air....next and last step i will do is to bleed air from cooling system. Quote Link to comment Share on other sites More sharing options...
BillyShaft Posted February 6, 2009 Share Posted February 6, 2009 Yay! Good news! Congrats on having heat! Quote Link to comment Share on other sites More sharing options...
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