Technical Strange Overheating

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Technical Strange Overheating

JShallis

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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?!?!?
 
Photos attached, couldn't work out how to add them directly to the post...im not a computer person :-(
 

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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
 
my thoughts exactly, but the mating surface doesnt match any of the connectors...strange...any ideas on the overheating?
 
I would say yes temp sensor, especially as its overheating. It should be next to your thermostat housing.
 
Pik1.JPG


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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Did you work out what this was?

I have the exact same cable loose after a head gasket replacement.
 
I will check this tomorrow, it appears long enough and if so is currently obscured by the air intake.
 
Sounds crazy, but to me it looks like one of the two coil pack power inputs, only if it's an 8v.
If it was the coil pack feed surely it wouldn't run?
Only a thought.
 
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