New Thermostat Needed? | Solved

[alexmccabe]

Right guys, advice please :)

My car temp sits at 75º instead of the 90º that it should be. Would this be the thermostat?

[skard]

It was on my ED30. If after 10 minutes of driving it is not at 90c & fluctuating when you stop/move off, then it is a safe bet.

[GrayMK5GTI]

My issue here:http://www.mk5golfgti.co.uk/forum/index.php/topic,80793.0.html

Was fixed with a new thermostat 

It's a pig of a job to do at home, your best going to a specialist.  Part is around £25 IIRC

[bacillus]

My issue here:  http://www.mk5golfgti.co.uk/forum/index.php/topic,80793.0.html

fixed that link for you.   

[alexmccabe]

Cool thanks guys. I thought as much. Does anyone have a part number for it, I read on that thread that it was a specific on for an Ed30, but mine is just a normal GTi.

[skard]

The GTI has a different part number, think it ends F not H but have a look to confirm that.

[alexmccabe]

The GTI has a different part number, think it ends F not H but have a look to confirm that.

06F 121 111 F

Does this look right to you? It's all I can find.

[skard]

Yes for a GTI, or part number ending H not F for an ED30

[teginder81]

The problem is that the gauge may be inaccurate, that is very cold for an engine temp. If the gauge is correct you may have a thermostat stuck in the open position. If this is indeed the case you had better change it as your engine mixture depends on proper engine temp.

[GrayMK5GTI]

The problem is that the gauge may be inaccurate, that is very cold for an engine temp. If the gauge is correct you may have a thermostat stuck in the open position. If this is indeed the case you had better change it as your engine mixture depends on proper engine temp.

The gauge IS inaccurate. Best doing the trick with the climate to see what the sensors are reading. 75 degrees on the gauge will be around 60ish degrees in the climate display

[skard]

Should say I diagnosed mine off the Fiscon readings, the gauge first gets to 90c when it is about 75c

[alexmccabe]

The problem is that the gauge may be inaccurate, that is very cold for an engine temp. If the gauge is correct you may have a thermostat stuck in the open position. If this is indeed the case you had better change it as your engine mixture depends on proper engine temp.

The gauge IS inaccurate. Best doing the trick with the climate to see what the sensors are reading. 75 degrees on the gauge will be around 60ish degrees in the climate display

Okay, so how do I go about getting this to appear? I'm assuming it is on the climate control displays?

[GrayMK5GTI]

The problem is that the gauge may be inaccurate, that is very cold for an engine temp. If the gauge is correct you may have a thermostat stuck in the open position. If this is indeed the case you had better change it as your engine mixture depends on proper engine temp.

The gauge IS inaccurate. Best doing the trick with the climate to see what the sensors are reading. 75 degrees on the gauge will be around 60ish degrees in the climate display

Okay, so how do I go about getting this to appear? I'm assuming it is on the climate control displays?

http://www.mk5golfgti.co.uk/forum/index.php/topic,80793.msg839035.html#msg839035

[alexmccabe]

The problem is that the gauge may be inaccurate, that is very cold for an engine temp. If the gauge is correct you may have a thermostat stuck in the open position. If this is indeed the case you had better change it as your engine mixture depends on proper engine temp.

The gauge IS inaccurate. Best doing the trick with the climate to see what the sensors are reading. 75 degrees on the gauge will be around 60ish degrees in the climate display

Okay, so how do I go about getting this to appear? I'm assuming it is on the climate control displays?

http://www.mk5golfgti.co.uk/forum/index.php/topic,80793.msg839035.html#msg839035

Perfect thank you! Using that and speaking to my mechanic on the phone, I do indeed need a new thermostat. Thanks everyone!  

[GrayMK5GTI]

^ found your post in the middle of those quotes  

Glad your getting it sorted mate  

I feel sorry for your mechanic, he is going to hate you