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Model specific boards => Golf mk4 => Topic started by: Mdwalshy on 13 February 2014, 08:21

Title: Problem number 2
Post by: Mdwalshy on 13 February 2014, 08:21

Well my rough idle has been sorted now after weeks of hunting for it, it came down to 2 air leaks. One leak on the pipe from the brake servo to the inlet and the other on a breather pipe right beneath the inlet so thanks for all the help :-)

Anyway problem 2 is the coolant temp sensor. When I drive, the temp gauge drops and when stood still it's rises to the correct temp of 90 until I set of again and then it drops. Got it code read and came up with coolant temp Sensor so I changed this. The problem is still there and was code read again and is coming up with coolant temp sensor implausible signal?? Anyone have any ideas? Maybe a faulty new temp sensor?

Thanks
Mike.

Title: Re: Problem number 2
Post by: sharki786 on 13 February 2014, 09:35

Sound like the thermostat needs replacing. I would replace that

Title: Re: Problem number 2
Post by: WadGTI on 13 February 2014, 12:13

yeah sounds like thermostat. best to change both if you can.

Title: Re: Problem number 2
Post by: Nino on 13 February 2014, 12:31

It will be the thermostat as you have already changed the twmp sensor. Just ensure you use oem parts and not cheap crap

Title: Re: Problem number 2
Post by: WadGTI on 13 February 2014, 12:37

Quote from: Nino on 13 February 2014, 12:31

It will be the thermostat as you have already changed the twmp sensor. Just ensure you use oem parts and not cheap crap

Opps...just noticed he said he already changed the temp sendor  :grin:

Title: Re: Problem number 2
Post by: Mdwalshy on 13 February 2014, 12:58

Cheers for the advice will get a thermostat on order now :-)

Title: Re: Problem number 2
Post by: Wazzzer on 13 February 2014, 15:09

Did you use a genuine temp sender?

Title: Re: Problem number 2
Post by: Mdwalshy on 13 February 2014, 15:19

I'm not sure but I doubt it as it was a local garage who ordered the part and fitted it, so guess it was from there parts supplier.

Title: Re: Problem number 2
Post by: Scott D on 13 February 2014, 16:55

I have a spare brand new genuine sensor if your after one?

Title: Re: Problem number 2
Post by: dom on 13 February 2014, 17:10

Quote from: Wazzzer on 13 February 2014, 15:09

Did you use a genuine temp sender?

A cheap sensor could well be the problem, they are notorious for failing prematurely

Title: Re: Problem number 2
Post by: Wazzzer on 13 February 2014, 22:25

With stuff like that it's worth buying genuine parts otherwise you'll only be chasing the fault again in a few weeks