Car is 92, radiator replaced in 04, overheats at highway speeds, does not around town. I replaced water pump and thermostat, still overheats, gets about 3/4 of the way up the dial, does not peg out to H. It does better with A/C off, but still does not run where it is supposed to. I am wondering if you have to purge the air out of the system when you change water pump, I don't have a book so I don't know. Also, can anyone thinkg of another reason for overheating at highway speeds.
it looks like oil pump working, ie, if I take off oil cap when running there is some oil splatter, but only idiot light so don't know if presure is low
any suggestions would be appreciated.
![Exclamation :!:](./images/smilies/icon_exclaim.gif)