View single post by Mark Rosenbaum
 Posted: 06-28-2005 02:36 pm
PM Quote Reply Full Topic
Mark Rosenbaum

Joined: 03-12-2005
Location: Kingman, Arizona USA
Posts: 532
If I start my car when the air temp is 85^F, and let it idle on the driveway, it takes about seven minutes for the engine to reach the point where the thermostat opens -- in my case, a measured 185^F.  This works out to a warmup rate of about 14^F per minute.  It's my understanding that this is pretty typical of a 907 engine.  So, if your car's temp gauge indicates overheating within a minute or two of starting from an overnight rest, I'd be very suspicious of the temp gauge.

Of course, you could have a bad gauge (or voltage stabilizer), and a bad thermostat....