Quote:
Originally Posted by andrewwynn
If the temp dropped right back to "noon" then you may have just had an occurrence of a known bug in the DME that will randomly set the temp needle to max.
It happened to me once. I pulled over and put my hand on the radiator hose without difficulty I knew it wasn't actually overheating so I figured was a bad sensor.
Turned the car off and back on and needle went back to normal.
The dial on the dash is not a proper gauge. It for all intents and purposes is a three position idiot light:
Cool, normalish, overheated.
I'm willing to bet your case was like mine.
Use the hidden menu to monitor ECT (engine core temp) to confirm the cooling system is behaving properly.
I think it might be test 7. It will show the engine temp in °C
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Quote:
Originally Posted by stiubhartach
I agree with this. If it had really overheated, the temp would have increased while it was off. From engine residual heat soak.
I think you’re safe, but keep an eye on coolant level.
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Correct. There is no way the temp was pegged into the red and then a minute later be normal again. As Andrew pointed out, there is a known DME glitch that has happened to a few cars before.