Howdy, Stranger!

It looks like you're new here. If you want to get involved, click one of these buttons!

Jeep Cherokee and Grand Cherokee Overheating

abdgabdg Posts: 1
I recently went to the mechanic to get my engine belt replaced. The next day I took it out to discover that the car has begun to overheat. I dont know what the issue could be. There is no coolant leaking either. Any thought as to what the problem could be and what I can do to fix it?


  • roofiemtlroofiemtl Posts: 2
    My 2002 Laredo I6 has just started to overheat. I purchased a new thermostat. Installed it and replaced the coolant. But I am not that lucky. I even changed the oil to full synthetic MOBIL 1 and added SYN. Slick 50. Nope, still gets there. The fan is working with air on or off. I see it spinning. At idle is where it starts to take a crap. driving no problem. Can it be maybe the fan isnt spinning fast enough.....
  • tuggajbtuggajb Posts: 646
    Replace fan clutch round thing with fins right behinde the fan blades blades both to it
  • roofiemtlroofiemtl Posts: 2
    It is a plastic electric fan. Do these have a fan clutch?
  • tuggajbtuggajb Posts: 646
    nope i was thinking you had tow package dont have fan hooked to water pump

    if over heating when stoped would think that elect fan not running right or up to speed if me would replace elect fan
  • dawn16dawn16 Posts: 4
    just bought this from a dealer , drove it home on fri and i cant' drive it. first the coolant fan keeps running, so replaced that and now works fine. still overheating so replaced the thermostat still overheating. did notice a light on the dashboard that looks like a camera to me ( for engine,emission,etc) also displayed is low coolant. filled the radiator completely.. it over heats with in a few minutes,even in idle. did notice when it is idling the overflow fills up to the top , when you shut the vehicle down it goes down as fast as it came up. any ideas.. I hoping nothing big i just got this and can't even drive it.
  • tuggajbtuggajb Posts: 646
    same as other reply bad head gasket

    dealer should be able to check if have exaust gases in colent sure sounds as if have bad head gasket

    have they checked raddiator flow so as to see if raddiator is pluged?
  • dawn16dawn16 Posts: 4
    yep jgc needs head gasket how much are they and the labor part?
  • tuggajbtuggajb Posts: 646
    don,t realy know as i do my own work
  • 5213252132 Posts: 62
    Did you replace the water pump yet? The lives of water pumps, on these engines, are short lived.
  • Ok bought the vehicle for 500 bucks cant beat it.vehicle was overheating. first the water pump was replaced due to the shaft being broken and the pulley kept throwing the belt off. next i replaced the thermostat was replaced. looked a little smaller then the one that was in there but it was the oem recommended. next the electric fan stopped working. It was shot so i replaced it and still didnt work then replaced the relay no luck and finally coolant temp sensor which the one they gave me did not match up to the connector and one from a 97 worked. fan still wont kick on and the vehicle constantly overheats still. Can someone please help me??
  • 30583058 Posts: 3
    i have a 2003 ,overheated. solution: change the fan motor. faulty fan motors due to faulty windings from factory.

    For anyone having overheating problems with their Jeep Grand Cherokees take these necessary steps before taking your vehicle to a dealership..........

    1. If your vehicle is equipped with a fan clutch, take your hand with the vehicle turned off of course and spin the fan by hand... you should feel resistance, if there is no resistance you will need to replace the fan clutch.

    2. If the fan clutch has resistance, turn the air conditioning on... look at the electric fan motors.. both should be spinning if they are not spinning there are two possibilities... there is a relay that is known to fry for the electric motors... verifiy it is working correctly... if it is then you need to replace the electric motor for the fan....

    **** another quick and easy way to check the clutch fan is while the engine is running find a focused flashlight of laser pointer and shine it onto the fan blades.. you should see a consistent circles of light if it is spinning properly... if your seeing the laser pointer or flash light hit on blade at a time than you can gurantee that it is the fan clutch.

    ******* Never take your vehicle to the DEALERSHIP until you have ruled out all simple causes************ The fact that the vehicle is not overheating when your on the highway tells me that the vehicle in fact does not have a HEAD GASKET issue... and the problem at hand is probably an external cooling device... the Fan cluctch or Electric Motor fan...
  • jeep is so evil. ever since i bought the damn's been giving me problems. so far i've replaced the barrings, water pump, starter, ignition switch, radiator, battery, fan clutch, 1 tail light (the whole assembly) (twice!!)...and now...worst of all i have to replace the rear diff!! i can't take it anymore LOL. i feel your pain. :P
  • i want to change the color of the speedometer question is, is it easy to change?? could a 24 old woman do it?? lol :blush:
  • Last week I was pulling a trailer with my 2001 Jeep Cherokee and the radiator gave up and developed a hole on the side. so I replaced the radiator. Now the Jeep will not cool its self down. I replaced the thermostat cause the upper radiator hose was not getting warm. so now it is warm and still wants to overheat and push all the fluid from the radiator to the overflow bottle. The motor refuses to cool down the upper hose is now getting warm. I need help asap please. I do not want to loose my job cause I can not get back and forth to work. the thermostat is a OEM 180 degree
  • tuggajbtuggajb Posts: 646
    what engine you have?
  • it is the 4.0L inline 6 automatic tranny
  • tuggajbtuggajb Posts: 646
    could have a bad fan clutch to check run engine till wharm sut off turn fan should have resistance .
    could also ruened the water pump as think i read that some of the water pumps had plastic impellers
  • Hello Sean If the coolant is going to the over flow tank that means there is more pressure in the cooling system then the radiator cap can hold back. First thing I would do is check the cap pressure rating then see if there is any resistance to the spring that feels to match the cap rating if not bad radiator cap. How long did you pull the load when the radiator was leaking? Did it warm up on you then cool back down. Coolant temp sensors don't measure air temp. If there was no coolant in your engine the gauge will read cool when acualy the engine will be turning itself in to a molten pile of steel. Sounds to me like your head gasket blew out, or wore you cracked a head. There is a easy way to tell. Go to any parts store and ask for a head gasket leak detector kit. (about 20 dollars) Just follow the instructions on the bottle. If the blue fluid turns yellow that is bad. It has never lied to me yet. Sorry for the bad news but I have seen that exact same problem on 4 or 5 4.0 I6 before.
  • smithedsmithed Posts: 444
    100 to 1 Kirksjohnson is right: you blew the head gasket when it overheated when the radiator blew out. Good luck.
Sign In or Register to comment.