gh_speedyg

Hi, I am having a problem with my 92 civic, it is overheating at high speeds. It doesn't overheat at slow speeds, or in stop and go traffic. I have flushed my rad, changed my thermostat, changed my rad, and still no luck. only happens after driving for over an hour at high speeds. Head gasket doesn't appear to be leaking. Not loosing coolant and heat disperses when I turn heater on in car. Any suggestions?

poison

At high speeds I'm assuming high RPM's. I am thinking water pump.

Henry HA

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by poison &raquo;</TD></TR><TR><TD CLASS="quote">At high speeds I'm assuming high RPM's. I am thinking water pump.</TD></TR></TABLE>

waterpump...thats what happend to me for months

and is it over heating at high speeds with low rpms or high speed with high rpms?

gh_speedyg

@ around 4000-4500 RPMs. It's when I'm driving home a little too fast, but if it's lower than 4000, the problem doesn't occour. Whay would a watter pump cause the car to overheat? Isn't it driven only by the belt?

Kamin

but if the pump is out of spec, it isnt flowing coolant properly to cool the motor at a load that high.