overheating

[Steve Sears]

Jim,
Thanks for the loud thinking,
I guess that I wasn't clear on the original posting, but when the overheat
alarm went off, by the time I got to the side of the road, the reservoir cap
was boiling over - hence the loss of the coolant
I'll check the fan speeds, but at 120 km/h with a 30 km/h headwind at about
3 degrees celsius, I would expect that the fan would have been freely
spinning its heart out (pinwheeling?) without power.  I suspect that 5th
gear at 95 km/h would have overheated the car, whereas 3rd gear at 95 km/h
would not have - would the lower rpm force more exhaust through a failed
head gasket, or the water pump would not be able to supply enough flow
through a clogged radiator (3 years old, exposed to at least 2 engine
flushes) to keep the car cool?
Thanks,
Steve
----- Original Message -----
From: jim rose <sf5ktq at hotmail.com>
To: <steve.sears at soil-mat.on.ca>
Cc: <quattro at audifans.com>
Sent: Tuesday, April 02, 2002 11:56 AM
Subject: re: overheating


> steve,
>
> have you checked/tested the fan switch[es] and connections? perhaps theres
> an intermittent connection? do all your radiator speeds work [easy test]?
> are you sure the gauge is right? perhaps your multi sensor is screwy?
>
> or the flushing dislodged all sorts of crud thats now sticking your tstat
> shut? or clogged the rad?
>
> im curious as to why you kept topping up the coolant? if its not leaking,
it
> shouldnt need topping up..
>
> thinking outloud.
> jim