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Model specific boards => Golf mk4 => Topic started by: stevelfc on 08 February 2012, 06:52

Title: quick question temp sensor/ thermostat
Post by: stevelfc on 08 February 2012, 06:52
on a mk4 golf 1.8.t we all know if a temp sensor is playing up or faulty it can increase fuel compustion and give running problems but is this the same if a thermostat is faulty ? As it's not doing it's job .
Why i ask is my gauge goes up to 90 if car stationry but soon as you drive it starts to drop back down ( need new thermostat ) so one minute the gauge will be normally 90 next minute back down to cold .
so if a car engine is cold the car adjusts fuel mixture.e.t.c. because it thinks it got to get to running temp but if its always running cold due to knacked thermostat surley the car adding more fuel e.t.c
Title: Re: quick question temp sensor/ thermostat
Post by: Granta Gti on 08 February 2012, 13:21
That does sound like thermo. It will use a bit more fuel, not a huge amount more but will run richer.
Title: Re: quick question temp sensor/ thermostat
Post by: barrym381 on 08 February 2012, 20:44
change both they are cheap an easy to do :smiley:
Title: Re: quick question temp sensor/ thermostat
Post by: stevelfc on 08 February 2012, 20:47
change both they are cheap an easy to do :smiley:
done temp sensor , water pump so next thermostat
Title: Re: quick question temp sensor/ thermostat
Post by: Wayne on 09 February 2012, 00:08
change both they are cheap an easy to do :smiley:
done temp sensor , water pump so next thermostat

Did you use a genuine temp sender.