Hi:
I've got a 1990 Grand Voyager 3.3 litre automatic that for some time has been having overheating problems. Basically, if I have to climb up much of a hill (say going over Roger's Pass in the Canadian Rockies on a major highway), the engine temp will climb quite quickly and will sometimes get very close to redline. I think this isn't right - any other vehicles I've driven can handle such hills without breaking into a sweat. Also, if it's hot out (ie: summer) and I'm in traffic in a city, the same thing happens. Is there something about coolant circulation that these minivans can't handle? Are the rads too small?
For information, I have a brand new, better than original rad, new rad cap, the fan does come on and I'm not trying to pull anything. I've also always used distilled water to mix with the antifreeze so there shouldn't be excessive mineral deposits in the coolant system. Any thoughts?
Dave