Jeep Grand Cherokee Overheating

Asked by Nov 13, 2016 at 10:48 PM about the 2001 Jeep Grand Cherokee Laredo 4WD

Question type: Maintenance & Repair

I have a 2001 Jeep Grand Cherokee, and it
over heats when I drive, but not at idle. I
have notice when it's overheating that the
top hose is extremely pressurized.  But the
weird thing is that I don't have a
thermostat in. Further information, I have
replace the water pump, radiator, radiator
cap. Also, when I bleed the truck, I bleed it
on a hill, the truck is blowing both cold and
hot air. I can idle and rev the truck as much
as I want without overheating, but as soon
as I drive about 2 miles it's goes very hot,
on the verge of overheating.
Is there any thought of the issue and

15 Answers


Are the cooling fans pulling and not pushing air through the radiators?

2 out of 2 people think this is helpful.

Well, on these jeeps, there are electric fans. And I forgot to mention that the fan does work.


They will work both directions, so make sure they are pulling air through the radiator, not pushing air out.

1 out of 1 people think this is helpful.
Best Answer

That seems logical, I'll check in the morning. If that's the problem, how do I resolute that? Also, what is your theorie on the high pressures top hose?


To change the fans direction just reverse polarity at the connector. High pressure can be a couple of things, 1 the coolant flow is too fast for proper heat exchange, a thermostat would slow down the flow, 2 air and coolant flow restricted, but you stated that you have already replaced both the radiator and water pump, so I think we can rule that one out, 3 a blown head gasket, compression gasses building up in the cooling system while running.

1 out of 1 people think this is helpful.

Alright, I'll look into the fan. If I had a blown head gasket, wouldn't the oil be milky? The oil is not milky at all.


In the very early stages the oil would still look good, but you might notice some coolant consumption.

1 out of 1 people think this is helpful.

This problem has actually been percostant for about 3-4 months. And I have not changed the oil since.


Ok if it has been that long chance are good that you don't have a blown headgasket, but if it keep getting hot like that it will.

Yeah, I am surprised it hasn't yet haha. But I'll get back to you when I check it. Thank you Shoe


Great and good luck.

1 out of 1 people think this is helpful.

Sometimes on these jeeps you can have a blown head gasket and not have a milky oil or oily antifreeze. Have a smoke test performed, it could be a hairline crack between cylinders

1 out of 1 people think this is helpful.

Yeah I saw that, but the problem is fixed. It was the fan, it was pushing the opposite direction and now it's. It overheating.. thank you so much TennisShoe. I would have never thought of the fan. I might have tore the whole head off before I looked into the fan.


Change out the radiator cap for a lower pressure one.

1 out of 1 people think this is helpful.

Great glad I could help.

Your Answer

Add photo

Related Questions

  • 98 jeep grand carokee laredo overheating 1 answer


    1998 Jeep Grand Cherokee Laredo 4WD


    Maintenance & Repair

  • Jeep Grand Cherokee overland 2002 4 answers

    I've overheating in my car Jeep Grand Cherokee overland 2002, I changed the hydraulic cooling system to clutch system but the problem is still overheating then when I opened the cap radiator I fou...

    2002 Jeep Grand Cherokee Overland


    Maintenance & Repair

  • Can I swap a 02 Jeep Grand Cherokee I6 with a 97 Jeep Grand Cherokee I6 1 answer

    I own the 97 and my brother owns the 02 both jeeps have problems so we want to make one good one and his needs the motor

    2002 Jeep Grand Cherokee Laredo


    Maintenance & Repair

  • overheating, 5 answers

    changed fan and thermostat, still overheating and now a/c just blows hot air

    1999 Jeep Grand Cherokee


    Maintenance & Repair

Grand Cherokee

Looking for a Used Grand Cherokee in your area?

CarGurus has 69,713 nationwide Grand Cherokee listings starting at $495.


Search Jeep Grand Cherokee Questions

Jeep Grand Cherokee Experts

#1 inuevafreak
Reputation 1,850
#2 Tom Demyan
Tom Demyan
Reputation 1,630
#3 thejeepdoctor
Reputation 1,480
View All

Related Models For Sale

Used Jeep Cherokee
324 Great Deals out of 52,819 listings starting at $2,495
Used Ford Explorer
1,402 Great Deals out of 72,078 listings starting at $985
Used Jeep Wrangler
492 Great Deals out of 16,936 listings starting at $2,990
Used Toyota 4Runner
381 Great Deals out of 19,763 listings starting at $1,987
Used Chevrolet Tahoe
1,056 Great Deals out of 32,286 listings starting at $1,495
Used Dodge Durango
447 Great Deals out of 22,916 listings starting at $1,200
Used Ford F-150
3,360 Great Deals out of 205,059 listings starting at $1,273
Used Chevrolet Silverado 1500
2,544 Great Deals out of 147,459 listings starting at $2,000
Used BMW X5
556 Great Deals out of 16,570 listings starting at $2,788
Used Jeep Liberty
356 Great Deals out of 8,261 listings starting at $900
Used Chevrolet Camaro
664 Great Deals out of 38,931 listings starting at $2,995
Used Ford Mustang
721 Great Deals out of 38,164 listings starting at $1,750

Used Cars For Sale

2017 Jeep Grand Cherokee Laredo 4WD For Sale
4,603 listings starting at $27,490
2016 Jeep Grand Cherokee Laredo 4WD For Sale
13 Great Deals out of 2,840 listings starting at $23,286
2015 Jeep Grand Cherokee Laredo 4WD For Sale
26 Great Deals out of 727 listings starting at $19,477
2014 Jeep Grand Cherokee Laredo 4WD For Sale
43 Great Deals out of 1,100 listings starting at $12,995
2013 Jeep Grand Cherokee Laredo 4WD For Sale
28 Great Deals out of 703 listings starting at $13,500