I bought a Dodge Grand Caravan 2002 3.3 and noticed the temperature gauge doesn't move higher than a quarter inch up the scale. Most of the time its around L. The heater blows hot and it doesn't seem to be overheating. When I start the van in the morning to warm up, in 55 degree weather the top radiator hose never seems to get hot. Wondering its a thermostat,gauge, sensor problem?
I would try the temperature sensor...
I would suspect the thermostat first.
SOURCE: Dodge 2002 Grand Caravan V6 3.3 engine overheating/no cabin heat.
Replace the bad radiator hose first. Second- get you special formulated anti-freeze dye from the auto store and pour it into the radiator. Third- make sure you got all the air pockets out of your system, cause the coolant system won't work with air pockets in it. Fourth- Check for leaks by looking for the colored dye. If it's not the radiator hose, then could possibly be a pin hole in your radiator. Would suggest replacing all the radiator hoses at the same time while you got the coolant system disconnected, cause you don't want to have to come back and replace another hose in a few months.
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