M42club.com - Home of the BMW E30/E36 318i/iS
DISCUSSION => General Topics => Topic started by: Michael Mystik on February 01, 2013, 02:35:49 PM
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Hi Guys , I'm Mike from toronto , got a real technical problem here with a 1997 BMW 318i. I've recently re done the whole cooling system in this car , and it runs mint , the engine temp holds steady , lots of heat , separate digital climate control works perfectly etc. but I'm having a problem with the temp gauge on the dash , it fluctuates between regular temp (12oclock) and then drops fast to cold (9oclock) I've changed almost everything involved in the cooling system to narrow down the possibilities ; here's what I've changed
1 thermostat
2 water pump
3 temp send sensor
4 heater valve
5 heater core
6 cluster
The car had this problem before I changed any parts , and as of right now the car runs like new , but this temp gauge seems to have a mind of its own .
I've Blead the system , flushed the coolant , no leaks , no air , scanned the car while I was driving and problem was occurring and still no more info to go on.
I keep hearing that there is something related to the gauge , that sits above the glove box , but that might be all specuation ,
I'm wondering if any of you guys know where I can begin to look for a diagnosis on the problem
Any help would be greatly appreciated !! I called the dealer and they said change the Ecu, but not convinced that its that !!
Cheers
Mike
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Not 100% sure if this applies to the E36 as well, but you might have a bad ground/other connection at the rear of the cluster.
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That's what it seems like , but there is not much going on back there , 3 clamps , and a few screws ...... Is there something in particular wire wise that I should look for ? Obviously a damaged wire but otherwise ? Could a screw cause a short ?