. 2000 Jeep Grand Cherokee Laredo 4.0 runs hot

Asked by Nov 14, 2016 at 09:15 AM about the 2000 Jeep Grand Cherokee Laredo 4WD

Question type: Maintenance & Repair

Okay I have a 2000 Jeep Grand
Cherokee Laredo with a 4.0 engine
when I'm driving the needle stays at
2:10 that is the temperature needle
let's say I parked the car for 10
minutes I go back and start it and the
needle is now at 2 30 I took it to the
mechanic they change the temperature
sensor thermostat thermostat housing
and now they want me to change the
water pump help!!!

4 Answers

88,775

210 seems a little high, is it always that high or does it vary between 197 and 210? Check the radiator for dirt an debris in the cooling fins, backwash it out if needed. Are the cooling fans operating properly? A 2000 model if the cooling system has not been maintained properly it could have a partially plugged radiator internally. Has the radiator been flow tested? The temperature during a hot soak as you described is really normal, it's just that you have a slightly higher than normal running temp so the hot temps are going to be higher. Of course there is a possabality that the gauge is inaccurate, to find that out you would have to install a manual gauge so you can watch the temps through all drive cycles and compare the two readings.

No it just run's at 210 all the time. Should I have the radiator flushed? Before getting the water pump installed?

88,775

I would have the radiator checked for flow first, most shops have those little lazer temp guns and can see a problem with a radiator core by testing the difference between the top and bottom of the radiator all the way across the face of it. If they do find a problem you might be better off replacing the radiator or at least a recore.

OK thanks I'll try that and give an update when I get it replaced thanks for your help Joel

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