So when I'm driving my car will heat up to about halfway between the half and 3/4 marks. Then after a 10 maybe 15 seconds it'll drop right back down to the half mark, like the thermostat is taking too long to open. The highest its ever gotten while doing this was the 3/4 mark.
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Bad Thermostat?
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Originally posted by Danny View PostNope, but the e-fan is wired to be on at all times.
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Originally posted by Danny View PostShit I dunno. It was easier than doing all that.
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Is the car loosing coolant? If so you may be seeing overheats/overpressure from a small head gasket leak. That will form a bubble in the cooling system, causing the engine to run hot. When the pressure gets high enough the cap lifts, venting coolant and air and the temp comes back down.The car makes it possible, but the driver makes it happen.
Jim Levie, Huntsville, AL
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Originally posted by jlevie View PostIs the car loosing coolant? If so you may be seeing overheats/overpressure from a small head gasket leak. That will form a bubble in the cooling system, causing the engine to run hot. When the pressure gets high enough the cap lifts, venting coolant and air and the temp comes back down.My previous build (currently E30-less)
http://www.r3vlimited.com/board/showthread.php?t=170390
A 2016 Toyota Tacoma TRD 4x4 Offroad in Inferno is my newest obsession
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Originally posted by Danny View PostYeah its losing coolant, but I attributed it to a slow leak instead of a headgasket.
that's bad news.
If its a slow leak, then when the coolant gets too low the temp will go up, thermostat opens, and the temp goes down.
The same exact thing happened in my E30 when i had a 318is rad trying to cool the M50. Exact same symptoms as you.
I swapped in a 325is cooling system, and I was much happier, and the problem disappeared.
Check your coolant level when it starts doing it. If its really low then you have a pretty bad leak.My previous build (currently E30-less)
http://www.r3vlimited.com/board/showthread.php?t=170390
A 2016 Toyota Tacoma TRD 4x4 Offroad in Inferno is my newest obsession
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