Quote:
Originally Posted by Hooverfull
So I got my handy Fluke infrared temperature gun. I ran the car on the freeway again and replicated the problem. When it was hot, about 110. I pulled the car over and took some temperature readings. Auxilary fan was not running. Here are the readings in Celcius.
Upper coolant hose: 72.222
Lower coolant hose: 58.8
Radiator reservoir cap: 62
Cylinder 1 head: 82.2
Cylinder 3 head: 94.4
On radiator: 84.4
So, any ideas? Is my temp gauge off? It is important to mention I saw some relief pressure coming from the overflow cap, indicating it is actually that hot.
Will investigate some more, and get the oil analysis before I start dumping money in it. I know this can be characteristic of the 603, but is a bit extreme.
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The highest temperature with the infrared gun is 94C. The dash gauge is reading 110C.
Clearly, either the sending unit (most likely) or the gauge is in error by a serious amount.
Sure, it's "that hot" being 94C. But, it's nowhere near 110C.
You don't have any head gasket issues.