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Old 08-08-2007   #1
Join Date: Jul 2007
Location: Hollywood, Birmingham
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Engine overheating when sat in traffic

Hi I have a problem with my multi , the engine overheats when i'm sat in traffic, but cools straight down when moving again? I dont think the engine fan is coming on to keep it cool. Any idea's what it could be before I take it to someone who's gonna charge me a fortune for sumthing that might be simple to fix.

I (well my dad did really lol) have checked the fuses (in the engine compartment) and there is a space for another relay my dad thinks, sorry im not technically minded at all lol, i was just wondering if it could be that?

Any ideas would be greatfully recieved as we went to the Safari Park the other day and had to either sit and watch an elephant washing itself for 30 mins so car would cool down or do 70 mph past the camels etc with the kids moaning that they couldnt focus their cameras at such speed and throw food at the animals all at once lol , all that just so i could keep temp gauge at between 4 and 5 bars.

Thanks for any suggestions.
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Old 08-08-2007   #2
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Re: Engine overheating when sat in traffic

When this happened on my Alfa146 a couple of years ago it was the fan itself that was broken. To check for yourself you need a voltmeter and a circuit diagram (ideally). You might be able to work out which wire goes where by checking the coulours at the different connectors if you haven't got the diagram.
Disconnect the fan motor and check that there's no power/volts, then turn the engine on from cold and it should still be zero. When the temp gets to just above normal the voltmeter should register. If it does then it's the fan that's broken, if you get no reading with a hot (too hot) engine then it's the sensor system or wiring/relays. I can't recall if the multi has a temp sensor in the rad or relies on the temp guage sensor to signal the fan, if the former then the temp sensor in the rad is usually a prime suspect, otherwise more unplugging and circuit testing.
If you have aircon and the problem occurs only with the aircon on then you have probably got a problem in the wiring that boosts the fan speed.
Hope this helps you get started on your investigation..
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Old 10-08-2007   #3
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Re: Engine overheating when sat in traffic

Hi Johne,

Thanx for reply, sounds very technical lol. Will get my dad to check it for me when he gets back from hols. Hopefully now he will be able to get to the bottom of the problem

Kind Regards
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