I've been pretty sure my thermo is gone. It has been at one notch about 1/4 for months in Michigan winter. Now that it's warm here, I have been using AC. It will actually raise the temp to half way on the gauge. Does this seem right? If the AC is off, but I defrost in the morning or afternoon, the temp stays at the lower notch. It's only when I use AC.

I'm asking, because I'm wondering if there is anything else going on with the electric components that could raise the temp. I don't know enough about the switch that activated the AC, and I don't know enough about what turns on the viscuous heater.

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2005 Black KJ Sport CRD,
GDE Full Torque ECO TUNE, GDE Transmission ECO Tune,
Samco British Racing Green Hoses
Build Date 1/05
200k miles.
Original Owner

Operating temps should always be at least 176*, regardless of external temperatures. Your tstat is blown.

Yes, using AC in the summer can raise the operating temp... but the problem still remains the same.

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2006 Jeep Liberty CRD, Limited
GDE Eco Tune, GDE TCM Tune, Bauer 203* Tstat, Amsoil EaA 201 Filter, Clean MAP, Samco CAC Hoses, Magnaflow Muffler #12226.
New Mopar Fuel Filter, K&N Filterminder, Fumoto Oil Drain Valve
225/75R16 Hankook Dynapros

Thats pretty much been the behaviour of my temp gauge since I have owned the CRD. I always thought that was normal. Now I'm wondering about my TStat.

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2005 CRD Midnight Blue
GDE Tune
Moog Ball Joints
No Exhaust Brake

Winter Diesel Summer Diesel

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