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Model specific boards => Golf mk3 => Topic started by: WeekendMechanic on 07 February 2013, 08:49

Title: Thermostat or temperature sensor?
Post by: WeekendMechanic on 07 February 2013, 08:49

Been reading through previous post but i`m still confused, usual symptoms when driving stays or goes lower than 70 degrees when idle goes to 90.
I`v started from cold and checked the bottom hose it gets warm at 70 degrees so thermostat s does open is this correct?
Or is the temperature sensor not reading properly ?

Title: Re: Thermostat or temperature sensor?
Post by: folgate on 07 February 2013, 10:20

I had same problem I sent car off for thermostat to find out it was just the temp sensor which is the easiest job in the world and I paid about £5 for at gsf

Title: Re: Thermostat or temperature sensor?
Post by: itavaltalainen on 07 February 2013, 12:37

with those symptoms it is almost certainly thermostat mate....

15£ for thermostat, 10 for coolant and about 2hours if you've never changed one on a mk3 before.

Title: Re: Thermostat or temperature sensor?
Post by: WeekendMechanic on 07 February 2013, 14:48

It quite a big job that`s why I want to be certain
So your saying that the thermostat is opening beforehand and it should not open before 90 degrees and that its a dodge thermostat?

Title: Re: Thermostat or temperature sensor?
Post by: itavaltalainen on 07 February 2013, 19:22

yes, your thermostat is opening too early, or more likely just not fully closing anymore.

don't know what you mean with big job, just a bit messy due to coolant coming out....
change itself is fairly simple and can be managed easily with basic tools.

if you tell me which engine you got i can give your instructions...

Title: Re: Thermostat or temperature sensor?
Post by: dixie180 on 07 February 2013, 20:09

Sorry to hijack this thread but gonna change my thermostat this weekend.Have an 8v Mk3 ADY and Haynes manual so i guess i'm halfway there.Is there anything else i might need ie,new gasket,grease etc.
Cheers

Title: Re: Thermostat or temperature sensor?
Post by: mrsaunders on 07 February 2013, 20:15

Quote from: dixie180 on 07 February 2013, 20:09

Sorry to hijack this thread but gonna change my thermostat this weekend.Have an 8v Mk3 ADY and Haynes manual so i guess i'm halfway there.Is there anything else i might need ie,new gasket,grease etc.
Cheers

I remember changing my water pump/ thermostat on my old ady, pretty straight forward really, just need the new thermostat and the Oring that comes with it

Title: Re: Thermostat or temperature sensor?
Post by: dixie180 on 07 February 2013, 20:19

Cheers,yeah got both so gonna give it a go. :wink:


Rob

Title: Re: Thermostat or temperature sensor?
Post by: itavaltalainen on 07 February 2013, 20:20

if you get stuck give me a shout, not far from worcester :)

Title: Re: Thermostat or temperature sensor?
Post by: dixie180 on 07 February 2013, 20:32

Hey might take you up on that  :laugh:.Cheers

Title: Re: Thermostat or temperature sensor?
Post by: WeekendMechanic on 07 February 2013, 20:36

I have changed the coolant recently so I know how.
thanks all the same itavaltalainen.