Engine is the 4.0 inline 6, electric fan only. This appears to be intermittent but I'm not positive. It does heat up rather quickly going up hills and what not and so far twice sitting in traffic in 80 degree heat it's done it. When going up hills however, It's still moving and has air across the radiator so it's never been too much of a problem or a worry of overheating. The fan when I sit and let the car heat up does come on between 200-210 and then shuts off at 200. When moving and air across the radiator, the coolant gauge(looking at the idiot gauge in the vehicle) stays at around 200 or so. My wife did say that the second time it happened in traffic, she pulled over, shut the car off to let it cool down and then in 10 minutes started it back up. the temp went down to 250 but was wanting to steadily climb back up. She shut the car off when it hit 260. She said that she could hear the coolant bubbling in the overflow tank. When she could move with traffic again, she had no more problems. Again, like I said I did put in a new thermostat. New t-stat or old t-stat it still does the same thing. Car heats just fine....Maybe fan relay? where is the relay and now much is a new one for that. My wife dosen't have the knowledge to see if the fan is moving when it starts to overheat and the times it's started to overheat, it's all been while it was only her driving. Thanks guys, sorry to be so long.
This Space for rent.