Grand Cherokee Ask the Question Thread
08-18-2018, 09:28 AM
#841
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Join Date: May 2015
Location: Arizona
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Year: 97
Model: Cherokee
Engine: 4.0
FYI. The transmission fluid line that passes through radiator is actually a heat exchanger. It adds heat to fluid on warm up, maintains a steady temp of fluid during operation, and will remove excess heat.
I have run a stand alone cooler made for transmission fluid that limits flow of cold fluid to allow warm-up (7.5' x 11" 3/4"). Plate & fin type cooler, more effective and more durable than tube & fin. It was on a Cherokee XJ, 4.0, AW4 transmission.
The AW4 is a good size transmission that makes a lot of heat. The B&M cooler worked well but temps stayed below 140F during normal driving. Would get up to 180F on beach. Cooler was mounted in front of mechanical fan so that it always has airflow.B&M SuperCooler 70268
https://www.summitracing.com/parts/b..._content=B%26M
I have run a stand alone cooler made for transmission fluid that limits flow of cold fluid to allow warm-up (7.5' x 11" 3/4"). Plate & fin type cooler, more effective and more durable than tube & fin. It was on a Cherokee XJ, 4.0, AW4 transmission.
The AW4 is a good size transmission that makes a lot of heat. The B&M cooler worked well but temps stayed below 140F during normal driving. Would get up to 180F on beach. Cooler was mounted in front of mechanical fan so that it always has airflow.B&M SuperCooler 70268
https://www.summitracing.com/parts/b..._content=B%26M
08-18-2018, 12:54 PM
#842
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Model: Cherokee (XJ)
FYI. The transmission fluid line that passes through radiator is actually a heat exchanger. It adds heat to fluid on warm up, maintains a steady temp of fluid during operation, and will remove excess heat.
I have run a stand alone cooler made for transmission fluid that limits flow of cold fluid to allow warm-up (7.5' x 11" 3/4"). Plate & fin type cooler, more effective and more durable than tube & fin. It was on a Cherokee XJ, 4.0, AW4 transmission.
The AW4 is a good size transmission that makes a lot of heat. The B&M cooler worked well but temps stayed below 140F during normal driving. Would get up to 180F on beach. Cooler was mounted in front of mechanical fan so that it always has airflow.B&M SuperCooler 70268
https://www.summitracing.com/parts/b..._content=B%26M
I have run a stand alone cooler made for transmission fluid that limits flow of cold fluid to allow warm-up (7.5' x 11" 3/4"). Plate & fin type cooler, more effective and more durable than tube & fin. It was on a Cherokee XJ, 4.0, AW4 transmission.
The AW4 is a good size transmission that makes a lot of heat. The B&M cooler worked well but temps stayed below 140F during normal driving. Would get up to 180F on beach. Cooler was mounted in front of mechanical fan so that it always has airflow.B&M SuperCooler 70268
https://www.summitracing.com/parts/b..._content=B%26M
08-25-2018, 02:11 AM
#844
Old fart with a wrench
If it's got the 242 Selectrac, you're good to go, same as an XJ. If it's got the 249 Quadratrac, they can be a problem with the viscous coupling. Check for wheel hop or skidding on tight low speed turns. Just like your XJ would be in 4wd on dry pavement. The coupling is a bit pricey and requires a total teardown of the t/case to replace.
The 4.0 with a 242 will last until the frame rots!
The 4.0 with a 242 will last until the frame rots!
08-26-2018, 01:54 PM
#845
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Model: Cherokee (XJ)
98 grand Cherokee Laredo sport
So I need some help from y'all. I have a 98 Laredo sport that is not shifting.
while driving the rpms either rev high or low and the fastest I can go is 35mph. I'll let of the gas and this is what happens, the odometer light goes off, the oil and temp gauges shut off. I give it gas and the light and gauges come back on. This is my daily driver and I need some insight on this problem
while driving the rpms either rev high or low and the fastest I can go is 35mph. I'll let of the gas and this is what happens, the odometer light goes off, the oil and temp gauges shut off. I give it gas and the light and gauges come back on. This is my daily driver and I need some insight on this problem
08-30-2018, 10:58 AM
#846
CF Veteran
Thread Starter
ask me how I know...lolSo I need some help from y'all. I have a 98 Laredo sport that is not shifting.
while driving the rpms either rev high or low and the fastest I can go is 35mph. I'll let of the gas and this is what happens, the odometer light goes off, the oil and temp gauges shut off. I give it gas and the light and gauges come back on. This is my daily driver and I need some insight on this problem
while driving the rpms either rev high or low and the fastest I can go is 35mph. I'll let of the gas and this is what happens, the odometer light goes off, the oil and temp gauges shut off. I give it gas and the light and gauges come back on. This is my daily driver and I need some insight on this problem
08-30-2018, 11:05 AM
#847
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Join Date: Dec 2017
Location: Calgary, AB
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Year: 1998
Model: Grand Cherokee (ZJ)
Engine: 5.2
If it's got the 242 Selectrac, you're good to go, same as an XJ. If it's got the 249 Quadratrac, they can be a problem with the viscous coupling. Check for wheel hop or skidding on tight low speed turns. Just like your XJ would be in 4wd on dry pavement. The coupling is a bit pricey and requires a total teardown of the t/case to replace.
The 4.0 with a 242 will last until the frame rots!
The 4.0 with a 242 will last until the frame rots!
Replaced my 249 with a 231 because of that.
08-31-2018, 02:38 PM
#848
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Year: 1999
Model: Grand Cherokee (WK)
Engine: straight 6
Weird Headlight / Taillight Problem
Hey guys, hope you can help.
I have 1999 Jeep Grand Cherokee Laredo, straight 6, auto, 4x4.
Recently I have this strange problem occur:
When my headlights are OFF, my rear lights All work perfectly fine - Brake, signal, running lights & Backup.
When I turn ON my Headlights, my Rear Brake lights go Completely out.
This is the same for both automatic and manual settings.
Fuses all look good.
I dont get it, any help is appreciated.
I have 1999 Jeep Grand Cherokee Laredo, straight 6, auto, 4x4.
Recently I have this strange problem occur:
When my headlights are OFF, my rear lights All work perfectly fine - Brake, signal, running lights & Backup.
When I turn ON my Headlights, my Rear Brake lights go Completely out.
This is the same for both automatic and manual settings.
Fuses all look good.
I dont get it, any help is appreciated.
09-21-2018, 04:20 AM
#851
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Model: Cherokee (XJ)
To buy or not to buy..
I found a 2004 4.0 WJ Quadra-Trac II with 185k miles on it. I have no maintence record for the vehicle. It starts right up and sounds great and everything seems to work... Bit worried about the mileage and if it was well maintained... its clean in and out no rust and ruined interior. The vehicle is from NY...what should i pay attention to?
09-21-2018, 01:58 PM
#853
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Model: Cherokee
09-21-2018, 03:12 PM
#854
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Model: Cherokee
2000 jeep grand cherokee tail light socket tab broke off
I was going to change the taillight blinker bulb in my 2000 Jeep Grand Cherokee. When I tried to turn the bulb socket counter clockwise, the tab broke off (probably brittle due to age). Now how can I get the bulb socket unscrewed so I can change the bulb? Is it alright to spray WD40 on the bulb socket part so it might turn?
09-21-2018, 03:14 PM
#855
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Year: 1998
Model: Grand Cherokee (ZJ)
Engine: 5.2
I was going to change the taillight blinker bulb in my 2000 Jeep Grand Cherokee. When I tried to turn the bulb socket counter clockwise, the tab broke off (probably brittle due to age). Now how can I get the bulb socket unscrewed so I can change the bulb? Is it alright to spray WD40 on the bulb socket part so it might turn?
FYI WD40 will do jack squat as a "penetrant". Use PB Blaster or something.