Operating Temperature

[318 iS Cosmos]

Guys does anyone know the optimum operating temperature range for the N42 engine? The car is running at 108 degrees but the temp gauge is still in the 12 o click position! Is 108 too hot? I would have thought the normal operating temp would be 95-100 degrees


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[Don B]

I had the obd scanner plugged into the compact..think it was at about 98°...but I can check over the weekend for you if it helps

[John_D]

108 sounds a bit on the hot side to be honest.

[318 iS Cosmos]

Cheers Donal. John it does sound a bit too hot


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[ciars]

When I did some research before overhauling the cooling system 20 months ago, the optimum temperature was 90-95ish degrees for a healthy car. Ken in M&G sorted me out with an OEM stat & EGR stat (diesel). When I access the hidden OBC menu for temps, I'm consistently hitting 94 degress now when up to temp.

[John_D]

I was occasionally hitting 106deg before. Once a fixed a tiny leak(elbow at back of head) the temp came down to mid nineties. All good since. I guess if there is a leak of sorts to system won't pressurise properly and thus runs hot?

[Ford 2]

How ye all get this hidden temp thing sounds interesting

[318 iS Cosmos]

Here you go Jason! http://www.bmw-driver.net/forum/showthread.php?t=31204


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[ciars]

Here you go Jason! http://www.bmw-driver.net/forum/showthread.php?t=31204

Rookie! :happy:

http://www.bmwhaus.ie/forum/showthread.php?tid=46

[Ford 2]

Litterly to stupid to do this get as far as off and go to scroll through options and it goes back to the start, I'll re try after dinner