On the highway the heat works great at speed. If I slow down or go into city traffic and do stop and goes and revs go down to say 1000 rpm it starts putting out cold air again.
Sometimes when I slow down the heater doesn't heat but the temperature gauge climbs rapidly to near the red line for a few seconds and then drops rapidly back to normal.
Mechanic has replaced thermostat (twice), coolant, flushed system etc. Still the same problem.
Any advise is appreciated.
have the same problem?
Saturday, March 20th, 2010 AT 8:09 PM