I figured this out, it was the thermostat which I replaced. However, the car used to run just over 80 degrees, how it runs just below 90 degrees. After doing more research I've found there are several different thermostats, rated for several different temperatures, anywhere from 167 to 192 degrees. My logic suggest that cooler would be better for the engine. What's the difference between the different temperatures?

Thanks,
Marty.<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /><o:p></o:p>

 

Manufacturer's specify a coolant temperature for best results with each engine. It's best to use the correct thermostat and correct ratio of antifreeze to water. At that point over-heating is usually caused by fouling or a faulty recirc. pump.

 

As above, its not a question of logic, but fact. As a thermostat goes bad they usually allow the engine to run cooler than specified. So, it may be that your old stat was doing this and the new one is correct. You need to find out the correct temp.

If the stat is holding the temp constant at stand still and when moving, then its working. I think just below 90, is just about right.

 

Picking the correct thermostat also depends on where you are using your vehicle (cooler climates or closer to the equator)