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Old 11-29-2012, 11:19 AM   #12
aikmanson
Registered User
 
Join Date: Nov 2011
Location: Kingston/Cortland NY
Posts: 238
My Ride: 2000 323ci
Quote:
Originally Posted by WDE46 View Post
I don't know how an open thermostat would cause this problem. I can see it if the problem was the reverse: heat while idling, no heat while driving. For this situation an open thermostat doesn't fit.

Neotate, does your coolant temperature stay dead center when you are driving on the interstate? I mean DEAD center, not 2 degrees off.
The temp gauge is a bad indication of actual coolant temp. We know that the gauge is buffered from 75-105 (or is it 115, regardless) degrees celcius. The only true indication of coolant temp should be done using the OBC menu. Especially when diagnosing a potential problem with the car.
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2003 Jeep Wrangler Rubicon
2000 BMW 323ci
1995 Saab 900 SE - JZW Stage 4
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