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Model specific boards => Golf mk4 => Topic started by: faisalgti on 04 December 2007, 01:35

Title: Temp Gauge
Post by: faisalgti on 04 December 2007, 01:35
The temp gauge on my car is usually on 90 when the engine is warm, but the last couple of days it will warm up to 90 and then when i start to drive it will start dipping and go right to the bottom. If i leave the car started without driving it will go back up.

Anyone had similar problems or got any idea what it could be? Really hope its not a big job its the last thing i need with xmas just around the corner :sad:
Title: Re: Temp Gauge
Post by: ub7rm on 04 December 2007, 07:39
its your coolant temp sensor.  V easy and cheap!
Title: Re: Temp Gauge
Post by: MaXXeH on 04 December 2007, 08:28
yea mine done it, makes the car run ruff,   cost about£20 for a new part takes 5 min to fit. just remember to let your car cool down first or u may be visiting a&e
Title: Re: Temp Gauge
Post by: faisalgti on 04 December 2007, 12:32
Cheers guys glad its cheap!! Will i be able to do it myself? Where can i get the part from?
Title: Re: Temp Gauge
Post by: Ridg on 04 December 2007, 13:05
Cheers guys glad its cheap!! Will i be able to do it myself? Where can i get the part from?

you can get an OEM from vag parts, GSF might do it too
Title: Re: Temp Gauge
Post by: faisalgti on 04 December 2007, 13:14
Cheers guys glad its cheap!! Will i be able to do it myself? Where can i get the part from?

you can get an OEM from vag parts, GSF might do it too


Thanks mate just checked it out 14.95 for the 4 pin, i think thats the right one ill get my uncle to check it out now if it is im gonna get it ordered
Title: Re: Temp Gauge
Post by: faisalgti on 04 December 2007, 14:57
Well guys just been down to my uncles garage and he got the mechanic to have a look at the prob. The guy said my a/c is on and that will be the cause of the problem, i said i havent even got an a/c button and its so damn cold so why would i have it on. Anyway my uncle pressed the 'Econ' button whilst the mechanic was looking at the a/c pump under the bonnet and when he switched it on the a/c pump went off. So he said try that for a while and it should be ok. Ive drove it around and it seems fine.

Firstly i dint even know i had a/c and secondly what the hell is all that about!!!!^^^
Title: Re: Temp Gauge
Post by: AlanD on 04 December 2007, 15:16
All GTi's have A/C or Climate Control . . .
Title: Re: Temp Gauge
Post by: Burgo on 04 December 2007, 15:31
Mine doen't have AC and its a GTi 1.8T.
Title: Re: Temp Gauge
Post by: Ridg on 04 December 2007, 15:49
All GTi's have A/C or Climate Control . . .

the early ones didn't (as standard) i think it was standard after 2001

the A/C doesn't explain the coolant temp though, i know the A/C uses that temp sensor but it should be one way and having the A/C on shouldn't cause the temp reading on the dash to be wrong
Title: Re: Temp Gauge
Post by: ub7rm on 04 December 2007, 17:15
Exactly as above.  The coolant temp doesn't drop to zero because the air con is on.
Title: Re: Temp Gauge
Post by: faisalgti on 08 December 2007, 13:57
Does anybody have any idea where the temp sensor is or wherabouts so i can change it myself? The problems not been sorted so im gonna replace it. Or even a link to a page which tells u where? Cheers guys



Btw previous posters were right a/c on or off should not affect it
Title: Re: Temp Gauge
Post by: Lennon on 10 December 2007, 19:36
Mine has started doing something similar now.  It gets up to temperature then drops back down to zero, or 1/4 for a minute or so before going back up.  It still seems to be running okay at the moment though.
Title: Re: Temp Gauge
Post by: cooltt on 10 December 2007, 20:03
Hello All

It's not just the temp sensor that causes this as i've just fixed the same problem on my 98 gti turbo 1.8.
First stop is change the temp senser which is easy, if it still does it then you have to change the engine thermostat as well.
Don't waste time buying half a dozen temp sensors. I had exactly the same problem on my BMW 318is.