Heater won't blow hot air checklist.
#1
Racer
Thread Starter
Heater won't blow hot air checklist.
1. Checked heater core for cloggage and it was kinda gross. No solid chunks but coolant was just kinda discolored, a little bit soupy looking. Flushed heater core 3Xs, replaced with clean new coolant.
Now what?
The round cold/hot tempature knob?
Thermo fan switch? http://shop.advanceautoparts.com/buy...-201-1650.html
What should be a checklist?
2001 CLS
Now what?
The round cold/hot tempature knob?
Thermo fan switch? http://shop.advanceautoparts.com/buy...-201-1650.html
What should be a checklist?
2001 CLS
#2
Senior Moderator
have someone turn the knob from hot to cold and back while you look under the hood on the passengerside near the firewall. There is a small valve that should operate when the person turns the temp knob. If that isnt moving that is your issue.
#5
J-series addict
iTrader: (4)
If valve isn't moving, you might have a bad heater valve linkage actuator (electro-mechanical component that's controlled by the HVAC control head). If it is moving the valve, the heater valve may be stuck closed. If this is the case, try replacing the valve or even bypassing the valve with a heater hose splice kit just for testing.
#6
Senior Moderator
#7
Racer
Thread Starter
Any brand valve gonna work or should i search out an OEM or Bosch or?
Stealership wanted $54. Did not i.d. brand.
Oreillys local walk in has Murray for $34 (photo included)
http://www.oreillyauto.com/site/c/de...&keyword=74780
AutohausAZ has Metrix (OEM) for 12.50!!!!
http://www.autohausaz.com/search/pro...ontrol%20Valve
Stealership wanted $54. Did not i.d. brand.
Oreillys local walk in has Murray for $34 (photo included)
http://www.oreillyauto.com/site/c/de...&keyword=74780
AutohausAZ has Metrix (OEM) for 12.50!!!!
http://www.autohausaz.com/search/pro...ontrol%20Valve
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#8
Racer
Thread Starter
#9
Senior Moderator
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