Why does my Jeep Run Hot?

Cullen Challacombe

Asked by Cullen Aug 28, 2009 at 10:43 AM about the 2000 Jeep Grand Cherokee

Question type: Maintenance & Repair

I have a 2000 Jeep Grand Cherokee 4.7 V8 with 108000 miles. Some times while in traffic, or a drive through or long stop light the temperature will rise to around 230 instead of the 210 in the middle. The temp will rise even faster with the AC on. However, when I'm moving, the temp. stayes around 210. Any ideas as to whats going on?

5 Answers

Trevor Lichte

First start with the easiest and simplest things to check, thats always number one when troubleshooting your rig. I would look at all your belts, if you have a loose belt that simply isnt turning the fan at idle, the wind may be moving the fan when you drive. Next check your fan itself, turn your car on, leave it in park and pop your hood, look to see if your fan is spinning, if its not spinning at idle then you have a problem with a temperature sensor that tells the fan to come on. Your thermostat could also possibly be the problem, it could just be sticking closed. I would start by checking these things, they are all real easy to check and you can do yourself, dont waste your money yet just in case it turns out to be a loose belt :)

9 out of 9 people think this is helpful.
Andrew Sciberras

i had the same problem, your cooling fan is not running when it should. try changing your temperature switch right by your thermostat. i dont know its name but talk to your local parts dealer theyll know what your talking about. it will cost you about $15-20

6 out of 6 people think this is helpful.

Some of those Engines just run a little hot at times and it could be normal. But, definitely check the condition of the fan and electric motor. Just because the fan is turning, doesn't mean it's turning fast enough. You are likely going to have to replace the electric fan motor soon if it keeps up after the weather cools off. They tend to wear out on that year/model. It's not too difficult if you have the tools and patience.

5 out of 5 people think this is helpful.

flush the eng after you you get all of the Old water out. Then take off the fan an then then remove the old wether pump and and put a new water pump on once you get the old weather pump on a tighten down. then Look at all of the heater hoses if any of them are Bad Chang them starting with the heater hoses and then look a the rest of them. If any of them Feel spongiform put put new on, we you do that Shang the thermostat and put put in a fail safe this way if it still over heat the thermostat ?A lot of times the impale come loos and you will not every notice till there is pressure is on IT. Then a father all of what you did you are ready to put in new Annti freeze to be put in and it has to brd half and half and then check the radiator and mad sure it's the right one and your JEEP should stop running HOT. Ed from Jersey I hope it helps

1 out of 1 people think this is helpful.

I have a 2001 Jeep Grand Cherokee Limited 4.0 inline 6 with 125K miles. I replaced the timing chain, IAC,TPS, Cam position sensor, crank position senor, and park position sensor. I can't figure out why it still idles high on start. I've checked all the vacuum lines. Anyone have any ideas?

2 out of 2 people think this is helpful.

Your Answer

Add photo

Related Questions

Grand Cherokee
Looking for a Used Grand Cherokee in your area?
CarGurus has 66,430 nationwide Grand Cherokee listings starting at $500.

Search Jeep Grand Cherokee Questions

Jeep Grand Cherokee Experts

#1 Tom Demyan
Tom Demyan
Reputation 1,200
#2 inuevafreak
Reputation 1,190
#3 thejeepdoctor
Reputation 1,120
View All

Related Models For Sale

Used Jeep Cherokee"
231 Great Deals out of 53,343 listings starting at $2,495
Used Jeep Wrangler"
964 Great Deals out of 50,168 listings starting at $1,800
Used Ford Explorer"
1,090 Great Deals out of 46,702 listings starting at $850
Used Toyota 4Runner"
351 Great Deals out of 12,587 listings starting at $2,495
Used Chevrolet Tahoe"
799 Great Deals out of 32,226 listings starting at $175
Used Dodge Durango"
439 Great Deals out of 23,949 listings starting at $175
Used Ford F-150"
2,931 Great Deals out of 178,420 listings starting at $1,000
Used BMW X5"
326 Great Deals out of 11,373 listings starting at $2,700
Used Chevrolet Silverado 1500"
2,101 Great Deals out of 138,016 listings starting at $1,500
Used Honda Accord"
916 Great Deals out of 74,155 listings starting at $1,295

Used Cars For Sale

2015 Jeep Grand Cherokee For Sale
82 Great Deals out of 43,744 listings starting at $22,999
2014 Jeep Grand Cherokee For Sale
226 Great Deals out of 4,399 listings starting at $17,988
2013 Jeep Grand Cherokee For Sale
146 Great Deals out of 2,632 listings starting at $16,250
2012 Jeep Grand Cherokee For Sale
200 Great Deals out of 3,543 listings starting at $15,333
2011 Jeep Grand Cherokee For Sale
142 Great Deals out of 2,581 listings starting at $12,750