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2002 Jeep Grand Cherokee Laredo?

2002 Jeep Grand Cherokee Laredo. Temperature shows in the middle or slightly over when at idle or when at a stop while traveling. While driving it increases to about 3/4? What could this be? Should I be concerned?

Yes, you should be concerned. Take it to a good mechanic to have the cooling system checked and serviced before it turns into an overheating episode. Make sure they know that it actually gets hotter when you’re driving rather than at a standstill.

That’s the best anyone will be able to tell you since you said absolutely nothing about the car. We don’t even know if its behaving normally otherwise. We don’t know how many miles are on, whether you’ve checked the coolant level, when - if ever - the cooling system has ever been serviced…etc.