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Help, I'm overheating! Or am I... Posted by camm [Email]  (#191) [Profile/Gallery]
(more from camm) on Mon, 4 Aug 2014 06:01:18
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Strange series of overheating-ish events have me bedeviled. Coming home from a weekend out of town, exactly 99 miles from home (thanks AAA!) on the highway, my warning light dings on, and to my horror, my temp gauge is climbing into the red. I pull over, wait a while, and open the overflow tank cap. I have coolant, oddly enough. I wait a while, pull back on the road, taking it easy, and within a mile, the needle is soaring again. The next exit happened to be a stone's throw, so I get off there, coast into a parking lot and try to figure it out. I figure that since I have coolant and no leaks, it must(?) be a thermostat (because I might be that rare unicorn that has his fail shut while driving), so I call AAA and end my vacation riding home in the cab of a tow truck.
After having the car dropped off, I go to start it, and it cranks and cranks and almost catches a couple of times, and when it finally does, blue smoke pours out of the exhaust and it stumbles and hiccups for 10 seconds, and then runs fine. Fast forward to this weekend - I start it up (with similar hard start symptoms), drive it around the block and within 1/2 mile, the temp gauge starts edging up past the normal operating temp level. So, I replace the thermostat (and the lower rad hose for good measure) and take the car around the block again. Temp gauge reads normal like it should. I'm happy.
Until I drive in to work this morning, a 4 mile trip on a rainy, cool morning, where as I'm approaching my building, the temp gauge again starts soaring, while my cooling fan is running. Again, plenty of coolant, new thermostat. So, am I actually even overheating, or am I being lied to by the gauge?
With the quirk of the hard start, which makes me think that the temp sensor is sending bad data to the FI computer, could it be that my NTC sensor is bad? But what about the gauge reading high - could the temp gauge sender module be bad too, at the same time? I'm at a loss, here.
, Mon, 4 Aug 2014 06:01:18 <-- Viewing This Message
, Tue, 5 Aug 2014 14:04:19, Tue, 5 Aug 2014 15:41:35
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