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Jeep Cherokee Grand Cherokee Engine and Performance Problems

729 messages,  Last post on Mar 20, 2013 at 10:59 AM

You are in the Jeep Cherokee and Jeep Grand Cherokee Forum.

What is this discussion about? Jeep Grand Cherokee, Jeep Grand Cherokee SRT-8, Jeep Cherokee, Engine, SUV

Messages Page 13 of 74

#117 of 729 1994 Jeep Grand Cherokee Laredo overheating. by maddysmom1

Jan 13, 2007 (7:07 am)

Hi hopefully someone can help me out my Jeep is overheating all the time even when driving and sitting at a light. Also my heat keeps coming out cold and warm and its making a weird noise sometimes. The thermostat is saying its in the red but i've only been driving for 2 minutes or so. If anyone out there can help me out i would greatly appreciate it. Thanks a bunch.
 
Jenny

#118 of 729 overheating by pliskin

Jan 22, 2007 (4:27 pm)

Check out the thermostat as well as the cooling fan relay. I had this problem and it cost about $250 to fix, well worth it.

#119 of 729 Another Jeep noise by pliskin

Jan 22, 2007 (4:32 pm)

My 2001 JGC Laredo is making a high pitched winding noise when my speed reaches 25+. It sometimes starts & stops. I sometimes think it has to do with the weather. But it is loud & anoing. I've checked all front end fluids & don't have any leaks. DOE'S ANYBODY HAVE A CLUE??? To another Jeep Problem????!!!!!

#120 of 729 cherokee 96 running hot by jeepdramas

Feb 09, 2007 (1:32 am)

hi
 
my 4.0L jeep is running quite hot when idling (almost three quarters on dash) and stops going up when the AUX fan comes on. why won't it come on earlier? and when in motion drops down to under half (100 deg cel.). i changed the thermostate and flushed the radiator. i live in a hot climate is it just the radiator is to small for my missions.? or maybe this relay switch i read about. where do i find? is it a big job??

#121 of 729 Re: Another Jeep noise [pliskin] by jeepdramas

Feb 09, 2007 (1:38 am)

Replying to: pliskin (Jan 22, 2007 4:32 pm)
hi
 
could be wheel bearing or hub. if you swerve the steering wheel back and forth like a mad man dose the noise come and go?

#123 of 729 1990 Jeep Cherokee OVERHEATING!! by cmbmbsps

Mar 24, 2007 (7:21 am)

Well, I bought a 1990 Jeep Cherokee just 2 Days ago. It's Automatic Transmission, 6 Cylinder Inline Engine 4 wheel drive. The previous owner told me he had just replaced the water pump and thermostat, but didn't mention anything about an overheating problem. When We got it home I did a complete tune up, changed all the fluids and filters and such. I noticed, after the drive home, that there was water in the coolant reservoir. I figured that it was just becuase he had replaced the water pump, and thermostat, and wasn't wanting to waste coolant. After we had finished our tune up, we took it on a drive to see how it was doing. It drove just fine for 15 minutes, and started to heat up gradually until it was in the red. We pulled over, waited for a bit, and drove to a mechanic. He told us that because it was a closed system, it's very easy to get a bubble in it, and that it doesn't work to just fill up the reservoir. So, we unplugged the heat sensor in the back of the engine, and took off the main radiator hose. We filled up the Radiator with coolant, directly through the hose until we had a steady stream of coolant coming out of the back of the engine, where the heat sensor was. We than filled the reservoir up, and let her run. After about 5 minutes of idleing, the reservoir had emptied some, and so we filled it a little past half way to complete, and we figured the bubble was gone, and our overheating problems were over. a 25 minute drive around town confirmed that. However, we drove it a distance of around 65-70 miles last night to be able to get home, and it did just fine until we got about 10 to 15 miles from the destination and it started to over heat again. We pulled over, and it spued coolant all over the place. So, in the end, something's wrong. So, to finish off, just some last things I noticed..... 1.) We found a pinched radiator line that goes back to the transmission (it appears the transmission is cooled by the coolant as well???) 2.) When it gets hot, the coolant seems to bubble back into the reservoir,and is usually boiling inside the reservoir. 3.) The coolant seems to be a rusty brown color whenever it overheats. However, it was a lot less rusty the second time. I have a feeling that it is just a bad, corroded Radiator. But, I just don't know. I want to change from a closed, to an open system, and don't know I sure would appreciate any help. Thanks!!!

#124 of 729 Re: 1990 Jeep Cherokee OVERHEATING!! [cmbmbsps] by tuggajb

Mar 25, 2007 (8:20 pm)

Replying to: cmbmbsps (Mar 24, 2007 7:21 am)
prob have pluged rad would put new one on heaveyduty
 
trans has small cooler in side rad un pinch line for sure

#125 of 729 2000 Grand Cherokee overheating.....dont know why by tourpro

Mar 27, 2007 (8:51 pm)

So I bought a 2000 grand cherokee on ebay (first mistake). IT has always run hot since I bought it about 3/4 or a little more on dash. So then one day it chimed and said check gages and it was almost on the red. I had the thermostat changed...nothing...so then we got into the water pump which was cracked. seemed to be fine after that. about 2 or 3 days later I was driving on the highway and overheated at 3/4 on the dash and the heat went cold. so I bled the cooling system to remove any air pockets, but now it still runs 3/4 or more on the highway... but in the city it runs just over 1/2. Any suggestions???? I would really appreciate any input.

#126 of 729 Re: 2000 Grand Cherokee overheating.....dont know why [tourpro] by jcarlson0418

Apr 03, 2007 (6:51 pm)

Replying to: tourpro (Mar 27, 2007 8:51 pm)
I have a 2000 Cherokee Sport, 4.0L, 4x4 and have had an overheating problem since 2005. It began to overheat so I took it in...had the radiator, thermostat, and head gasket replaced. It worked good for about a year and started to overheat again, but was okay as long as I kept filling it with coolant. About two weeks ago it wouldn't run at all without overheating. Just finished replacing the head gasket, water pump, thermostat, thermostat housing (it had cracked), and the radiator. I did it myself and just finished last Saturday. It ran perfect, had put about 250 miles on it, until today, on my way home it overheated. I am at a loss..is it possible the engine is bad?? It shouldn't be running that hot, and I know there is nothing wrong with the cooling system now, I just replaced the entire thing. Any suggestions?

Messages Page 13 of 74

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