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Old 11th December 2015, 06:45 AM
SilverS8 SilverS8 is offline
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Join Date: Jul 2011
Location: Norway
Posts: 362
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Quote:
Originally Posted by Mechcanico Lee View Post
The fact that you have good in car heating says the water pump is working

If the thermostat is closed you will still get heating in the cabin

A stuck closed thermostat will cause over heating

A stuck open thermostat will cause the engine not to get up to temp (over cooling )

Warm or hot top rad hose and cold bottom hose .....classic thermostat not opening symptom .... can also be blocked radiator .....replace thermostat first then see if bottom hose gets warm

"Force the fan to work ".... fix the initial fault , forcing the electric fan to work is a band aid on the original fault
A thermostat then

Managed to drive the 20-25 min to work this morning without it exceeding 90 deg (with max heat on the climate)

From what i have found, the 40V engines really requires timing belt removal in order to change the Theromstat, is that correct? I have yet to find any info on the AQH engine for either timing belt or Thermostat.

I'm sure ElsaWin has a write up i need to look at.
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2000 Silver S8
2005 A6 1.8TQ Premium
1993 Audi S4 2.2 TQ MTM 330 (my first love!)
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