[V8] Overheating, loss of electric fan 92 V8 4.2

cobram at juno.com cobram at juno.com
Sun Aug 5 13:09:23 EDT 2007


All US V8Q gauges are centigrade, so no need to convert readings to
Fahrenheit.  With a 185 F or 195 F thermostat, your readings are pretty
much normal for a pressurized system.  The temperature you're running is
not a problem, this is where they run.  Everything indicates a normal
system, temp drops when auxiliary radiator kicks in (heater core) normal,
temp drops a bit with additional airflow-normal, temperature increases
when engine turned off, normal - it's called heat sink.  The temperature
gauge has 100C dead center (212F), you're running between 100-105,
NORMAL.

You're chasing a nonexistent problem, your car is not overheating.  

BCNU,
http://www.geocities.com/cobramsri/
Disney World - a people trap operated by a mouse.


> The car still runs hot!!! At least according to the gauge. There is 
> no change as to before.
> I did a 340 mile-trip this weekend, and the temperature varied from 
> 210 to 220 F when driving at speeds
> from 45 to 75 mph. Only when going quite fast (80-90 mph) would the 
> temperature drop to about 190-195 F.
> Setting the heater to "HI" will also produce a massive temperature 
> drop - down to about 190-195 F.
> 
> ...but as I wrote earlier, this is just according to the gauge. Is 
> it common that they are faulty?
> 
> The car uses no coolant or no oil, so I have no reason to suspect 
> that there's something wrong
> with the engine. When I have parked the car for a short period of 
> time after I've driven it, and I start
> it up again, the temperature will probably be at about 230 F. It 
> goes right down to 210 in a matter of seconds,
> even if I just idle.
> 
> It's not a big problem now, we've had a cold summer here in Norway. 
> But what if we get a hot summer
> next year (about 85-90 F), I'm using the A/C, and have to stop at 
> some intersection? Will I have a meltdown? :)
> 
> /Dag Bøsterud
> Norway
> 
> 92 Audi V8 4.2


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