S3 Engine tempreture not stable. Anyone got a clue? Tried changing the thermostate.

[Karliboy]

Ok here`s the thing.

For some time ago the waterpump broke and it almost ruined the damn car.
We desembled the register and waterpump and it wasen`t much left of the blades on the waterpump. So we flushed the engine trying to get out as much of the blade peaces we could before we re-esembled the new parts. Filled up cooling fluid and checked for air in the system.
Then we re-esembled the new register/waterpump and the car runs fine and have been for some months, and i guess if there was some air in the system it would have got out by now.

The problem now is that the tempreture is not stable at 90¤C. When i drive it drops to about 70 - 80¤C and when i drive downhill for awhile it almost sinks to 60¤C. If i stop the car to a running stand still the tempreture climbes to 90¤C and stays there until i start driving again. It never goes over 90¤C

I have changed the thermostate that is located close to the airfilter, if you guys know where that is but that didn`t help. Does anyone know whats wrong?

Sorry for the bad english but hey im from Norway.

 

[Sandip]

I think what you have changed is the Temp sender, the thermostat is more near the alternator. It's your thermostat what needs changing

 

[s3 Hoggy]

http://forums.audiworld.com/showthread.php?p=16925102
Guide here Mate

 

[finesse]

That was the temp sender you changed; http://www.wak-tt.com/tempsensor/tempsensor.htm

What you need to change is the thermostat ; http://forums.audiworld.com/showthread.php?p=16925102


Get a genuine thermostat , o-ring and bottle of G12 from Audi ONLY

 

[Andy´]

I did send you a PM Karliboy...

 

[Welly]

Thats classic thermo failue symptoms. End of discussion.... LOL.

 

[Karliboy]

Thanks for the help guys!