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Old 19-07-2011   #1
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Strange Overheating

My Mk2 punto recently (2months ago) had a HG change after overheating, skimmed the heads and replaced timming belt, thermostat and HG. Since then I have occasional error codes comming through. Cam position sensor and throttle position sensor error codes, but not all the time. These dissapeared when I replaced the cam position sensor and the throttle body. ...

Yesterday, after driving perfectly for a week, the car wouldnt start. It had been left for 45-60mins while I went shopping. The engine was still really hot, so i took the air filter off and withinn 20mins the car cooled down and would start. Same problem today, really hot after 45-60mins of doing nothing...

Any ideas??? Temp gauge reading fine, fan working fine, coolant correct level/concentration.

Oh, and I found a connecter just dangling. It was hanging from one of the wiring looms leading towards the ECU????

Please Help?!?!?
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Old 19-07-2011   #2
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Re: Strange Overheating

Can you take a photo of this connector hanging loose?
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Old 19-07-2011   #3
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Re: Strange Overheating

I will do as soon as i can find my camera dock
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Old 19-07-2011   #4
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Re: Strange Overheating

Photos attached, couldn't work out how to add them directly to the post...im not a computer person :-(
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Old 19-07-2011   #5
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Re: Strange Overheating

hmm just took a look at mine and it looks like i dont have one :/ I would say it goes to the throttle body/inlet manifold though judging by the length of it
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Old 19-07-2011   #6
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Re: Strange Overheating

my thoughts exactly, but the mating surface doesnt match any of the connectors...strange...any ideas on the overheating?
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Old 19-07-2011   #7
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Re: Strange Overheating

is that the temp sensor plug ?
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Old 19-07-2011   #8
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Re: Strange Overheating

I would say yes temp sensor, especially as its overheating. It should be next to your thermostat housing.
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Old 19-07-2011   #9
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Re: Strange Overheating

Im struggling to find where it would go?? No plugs?
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Old 19-07-2011   #10
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Re: Strange Overheating



My Green Box's
You can see 1 connector there - weather or not its occupied or not
And there is just one Visible just behind and lower then the Rear Bleed Screw


As for Temp sensor - Temp sensor said to be working
plus he'd have error code for Temp Sensor Malfunction
AND no power as the car would be running rich and the fan would be constantly on

ziggy

Edit - Another weird Thought - do you have your Reversing light working?
If so it could be that but there must be a plug that your missing somewhere

ziggy
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Last edited by Ziggy122; 19-07-2011 at 23:58.
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Old 20-07-2011   #11
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Re: Strange Overheating

I'll check the reversing light, thanks ziggy
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Old 20-07-2011   #12
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Re: Strange Overheating

The reversing light works fine...
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Old 17-03-2017   #13
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Re: Strange Overheating

Did you work out what this was?

I have the exact same cable loose after a head gasket replacement.
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Old 17-03-2017   #14
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Re: Strange Overheating

Quote Originally Posted by aidander View Post
Did you work out what this was?

I have the exact same cable loose after a head gasket replacement.
you sure its not butterfly sensor?
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Old 17-03-2017   #15
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Re: Strange Overheating

I will check this tomorrow, it appears long enough and if so is currently obscured by the air intake.
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