still gets too hot..
Discussion
Bruce,
You have an air bubble in the system that needs to be burped out. From my experience I believe it occurs at the water pump causing the water to just cavitate there and not be circulated to the radiator up front.
My best solution was to pressure fill the system where the air bleed hose comes off the outlet pipe at the front of the engine. I used a pressurized plastic tank that I made for this purpose (and also for filling the tranny fluid) that I could hook up to my air compressor with about 10-15 psi but a pump up type lawn sprayer would work.
You can also try using the procedure that John Reid posted on the Yahoo list yesterday.
I spent two days once trying to get mine to bleed and was convinced the thermostat wasn't opening, the pressure fill solved the problem in 10 minutes...
Good luck.
Jim
95 S4s
>> Edited by jk1 on Sunday 22 May 02:53
You have an air bubble in the system that needs to be burped out. From my experience I believe it occurs at the water pump causing the water to just cavitate there and not be circulated to the radiator up front.
My best solution was to pressure fill the system where the air bleed hose comes off the outlet pipe at the front of the engine. I used a pressurized plastic tank that I made for this purpose (and also for filling the tranny fluid) that I could hook up to my air compressor with about 10-15 psi but a pump up type lawn sprayer would work.
You can also try using the procedure that John Reid posted on the Yahoo list yesterday.
I spent two days once trying to get mine to bleed and was convinced the thermostat wasn't opening, the pressure fill solved the problem in 10 minutes...
Good luck.
Jim
95 S4s
>> Edited by jk1 on Sunday 22 May 02:53
Temperature was running high on my car too, so I upgraded to a JAE aluminium radiator with SPAL fans. When I removed the stock radiator, the top half of the core was full of dirt. This explains why the cooling system was not working properly. When the new radiator was installed, the problem was all gone. Try to clean your radiator core with water and see what happens, it could solve your problem.
Teava
Teava
OK so here is what I found..
when I switched the ignition on today ( cold engine), the temp gauge read just over 70C right away... I pulled the green wire off the sender on the thermostat housing and the needle dropped to zero...
Next I attached a thermocouple right next to the sender and ran a wire inside. to a hand held digital readout.
The temp was same as outside temp. 15C here.
THen i started it and it warmed up to 79C and then held steady even on a drive. At idle the fans come on and off and everything seems normal.
Just the gauge on the dash is reading over 90C and brushing the red zone.
How can i screw up the sender while doing a timing belt change? Is there a another connector around the engine bay?
Anyway glad there does not seem to be an air pocket and the charge cooler is as cold as it has ever been.
when I switched the ignition on today ( cold engine), the temp gauge read just over 70C right away... I pulled the green wire off the sender on the thermostat housing and the needle dropped to zero...
Next I attached a thermocouple right next to the sender and ran a wire inside. to a hand held digital readout.
The temp was same as outside temp. 15C here.
THen i started it and it warmed up to 79C and then held steady even on a drive. At idle the fans come on and off and everything seems normal.
Just the gauge on the dash is reading over 90C and brushing the red zone.
How can i screw up the sender while doing a timing belt change? Is there a another connector around the engine bay?
Anyway glad there does not seem to be an air pocket and the charge cooler is as cold as it has ever been.
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