Dodgy thermostat = Crap economy???

[lukecupra2001]

as above, ive just changed me temp sender and me gauge still doing its nut and driving me mad!

its not going above 90 just up and down from 60-90 so doing thermostat at the weekend see what happens, but how much will it abuse me fuel gauge?its going down rapidly lately just thort it was the cold weather.

anyways shall see what happens at the weekend but please tell me your experiences off dodgy thermostats

 

[LEE69]

Yes you'll notice the difference with the car sitting at 90, as it should do.

 

[33754k]

My gauge is also not resting at 90. Goes down to 60 even when at full temp. Fuel economy seems to be 3mpg to 5 less than expected.
Anyone else experienced poor economy? Also is there a guide to change the temp sender?

 

[sheffboy]

yep. had this issue myself only a couple of weeks ago. The cold weather seems to be taking it's toll on VAG thermostats.

My mpg has improved by 30 miles to a full tank of fuel since replacing the old one.

apparantly a faulty CTS will cause even worse drop in mpg.

 

[lukecupra2001]

i dont have a MPG display with it been a pre facelift cupra but economy is realy bad, 220miles out of last tank compared to normal 260+

good guide for thermostat i found on here somewhere

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