'87 CGT "overheating" after huge snowstorm

[Andrew Butitta]

That would nail it... If I could get the proper ranges
for the two sensors, since the radiator fan doesn't
seem to be affected, I could cross-reference the two
readings to see immediately if the coolant temp sensor
is bad.

(crosses fingers)

--- Huw Powell <audi at humanspeakers.com> wrote:

> 
> > 1) where is the coolant temp sensor (the one for
> the
> > dash) & what are optimal readings for it? I'll
> give it
> > a test with an ohmmeter / voltmeter and see if
> it's
> > working.
> 
> I am trying to remember where yours would be.  You
> don't have the 2.3 
> (1987.5) which would have the multi-function sender
> on the top rad. 
> flange... Actually, I think the sender is in the top
> flange - there's 
> one there for your CIS-E and one for the gauge. 
> Wish I knew the 
> measurements for it offhand...
> 
> > Starting the car this afternoon, after it had sat
> in a
> > 12F parking lot with winds, the temp gauge
> immediately
> > registered cold/normal (rather than
> > 'too-cold-to-register'). Within 30 seconds, it was
> in
> > normal operating temperature.
> 
> There's no way that is "real," unless perhaps, your
> water pump isn't 
> running... in which case you wouldn't have an engine
> by now...
> 
> > I got home and parked it (in a normal spot this
> time)
> > and let the engine run while I felt the two main
> > radiator hoses. The top one was hot (but not too
> hot
> > to touch without gloves) and the bottom one was
> cold.
> > Is that normal? Which direction does coolant flow
> in
> > this engine?
> 
> This might help:
> 
>
http://www.humanspeakers.com/cgi-bin/audi_img.pl?image=images/cooling-flow.gif
> 
> Do you see flow through the expansion tank?  It's
> more visible when you 
> rev the engine.
> 
> > Thanks a bunch for your help, all of you! It is
> > starting to look like I will have to cancel my
> trip
> > tomorrow... :(
> 
> Most shops these days will have nifty temperature
> gauges they just point 
> at things.  You could always get some peace of mind
> by checking that out.
> 
> -- 
> Huw Powell
> 
> http://www.humanspeakers.com/audi
> 
> http://www.humanthoughts.org/
>