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Ok, drove it normally yesterday and this was the response. On city streets and freeway driving it actually ran cool staying at the 1/4 mark. When I exited on a freeway off ramp and went up and over an overpass stopping at the stop sign on the other side of the freeway the temp. had risen to close to that normal spot of just under the 1/2 mark. When I stopped at stop lights it would move toward the 1/2 mark. Didn't go over 1/2 mark all day, but I was never still for more than a long stop light.
I wonder if the t-stat is working with it running at 1/4 while the car is moving?? Someone else also mentioned the radiator thing. I'll try to paper towel test, but what's the consensus on what to start with? I'm tempted to start with the cooling system flush? Your opinions?
Thanks.
Yeah sounds like fan clutch has seized. It tends to lock itself at one speeds so when you are driving and your Tstat opens you run at 1/4 temp. if you idle for a long time it should overheat.
That seems to be the response, 1/4 while driving and moving higher when stopped. I just scheduled a cooling system flush for Monday, so I'll have them check out the fan clutch. Besides the basic tune up/oil change stuff I can't do much DIY stuff, so I usually take it to a pro.
BTW, she just passed 217k miles and still runs great. Hoping to get 250k out of her.
my car has no fan but somehow doesnt get hot in traffic anymore. when i am moving it is right at the 1/4 mark, and when i sit for around 5 moniutes now it starts to slowly climb. but not that quickly. your fan is probably broken. and a 32mm wrench and a good big pair of vice grips will do the trick. it is reverse thread so no more "righty tighty" shit.
As it turns out, I had most of the cooling system worked on. I took it to a small shop nearby that I trust. They thought the fan clutch was "weak", that the thermostat didn't warm up the engine properly, and that the belts were cracked and should be replaced. Since I'd been putting off some of these things (the belts were about 6 years and 100k miles old) I had them do all that including a system flush (for the radiator), the mechanic said there was corrosion in/around the t-stat so it was good to do it.
I don't do stuff like this myself anymore cause I can't have the car out of action for days/weeks. Now the temp. moves up to just under 1/2 and stays there like it's supposed to. Peace of mind.
She should be good up to 250k miles, at least, now.
my car has no fan but somehow doesnt get hot in traffic anymore. when i am moving it is right at the 1/4 mark, and when i sit for around 5 moniutes now it starts to slowly climb. but not that quickly. your fan is probably broken. and a 32mm wrench and a good big pair of vice grips will do the trick. it is reverse thread so no more "righty tighty" shit.
Thermostat.
Will
RIP e30 (brilliantrot '91 325i) 11/17/06 Byebye: 8/21/07
Welcome e30 (brilliantrot '90 325is) 12/23/06
DaveCN = Old Man
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