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Model specific boards => Golf mk4 => Topic started by: boyob32 on 16 December 2011, 17:56

Title: temp light
Post by: boyob32 on 16 December 2011, 17:56

I had the dreaded temp light cone on today, then disappear.

Coolant level fine, pump and belt changed 3000 miles ago, heating working and engine temp nicely on 90. Any ideas??

Title: Re: temp light
Post by: pickles on 16 December 2011, 23:56

dodgy switch/sender, wiring fault perhaps

Title: Re: temp light
Post by: richw911 on 17 December 2011, 10:12

Corroded sensor in the coolant botttle  :wink:

Title: Re: temp light
Post by: boyob32 on 17 December 2011, 22:15

Ahhh the one thing I didnt think, will check that out! Cheers  :rolleyes:

Title: Re: temp light
Post by: richw911 on 17 December 2011, 22:18

Quote from: boyob32 on 17 December 2011, 22:15

Ahhh the one thing I didnt think, will check that out! Cheers  :rolleyes:

A bottle is about £12 brand new from vw  :wink:

Title: Re: temp light
Post by: boyob32 on 17 December 2011, 22:21

Cool. Another question, today I also had a drop in my revs while idle which then stabilised, early to tell I know, but could this be the temp sender?

Title: Re: temp light
Post by: richw911 on 17 December 2011, 22:23

Quote from: boyob32 on 17 December 2011, 22:21

Cool. Another question, today I also had a drop in my revs while idle which then stabilised, early to tell I know, but could this be the temp sender?

Maybe, could need a throttle body clean  :smiley:

Title: Re: temp light
Post by: boyob32 on 17 December 2011, 22:29

Thats the more preferable outcome! Think I might give the car some new / cleaner parts this weekend! Well see how it works out!

Title: Re: temp light
Post by: richw911 on 17 December 2011, 22:34

Quote from: boyob32 on 17 December 2011, 22:29

Thats the more preferable outcome! Think I might give the car some new / cleaner parts this weekend! Well see how it works out!

Scan it for fault codes first http://www.golfgtiforum.co.uk/index.php?topic=87783.0