Re: '86 4000quattro overheats on the highway

[lmcstst@LMC.ericsson.se (Stamos Stamos)]

> Steven Selick writes:
> > ... but at highway speeds > 70mph, the car completely overheats ie
> > goes almost to the top line, and the red tep light on the dash comes on.
> 
> Is the car really running hot, or perhaps your gauges and lights are
> fooling you?  Maybe the temperature sender is bad...


Or there could be a head gasket leak, does it loose any coolant?
(pressure loss?)

Or there could be a restriction (scale) in the engine block.

Or the ignition is too(too too) far advanced, engine knocking.

Or thermostat does not open, very unlikely on a new one though.


On my Audi the temp drops at highway speeds.


/Stamos

Stamos