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CF Veteran
Joined: Sep 2010
Posts: 12,692
Likes: 6
From: Mercer County, NJ
Year: 2001
Model: Cherokee
Engine: 4.0L I6 HO
Originally Posted by cwabney
I haven't seen any issues with overall engine temperature -- when it gets up to 208º it remains stable. Wouldn't a faulty thermostat cause the engine to overheat in general? Besides, shouldn't the fan work when the AC is engaged regardless of engine temperature?
CF Veteran
Joined: Dec 2010
Posts: 6,880
Likes: 0
From: Frederick, Maryland
Year: 1996
Model: Cherokee
Engine: 4.0 I-6 High output
CF Veteran
Joined: Apr 2011
Posts: 4,825
Likes: 2
From: Indianapolis
Year: '99 and '91
Model: Cherokee
CF Veteran
Joined: Apr 2011
Posts: 4,825
Likes: 2
From: Indianapolis
Year: '99 and '91
Model: Cherokee
Fuel supply line, 91 cherokee
Hello,
My fuel line going into my fuel rail is leaking where the metal part of the line stops and turns into plastic. I tried replacing once with the same plastic BS, and it was still leaking. It never really got pliable though. POS. So after that failed I just took some rubber fuel line and squeezed it over the plastic parts left on there and clamped them down with hose clamps, it worked for a while but this morning it was leaking worse than before. I'm looking for something a little more proper. Hopefully a solid solution, like a rubber hose fitted to a quick connect fitting? ANY help is appreciated thanks guys.
My fuel line going into my fuel rail is leaking where the metal part of the line stops and turns into plastic. I tried replacing once with the same plastic BS, and it was still leaking. It never really got pliable though. POS. So after that failed I just took some rubber fuel line and squeezed it over the plastic parts left on there and clamped them down with hose clamps, it worked for a while but this morning it was leaking worse than before. I'm looking for something a little more proper. Hopefully a solid solution, like a rubber hose fitted to a quick connect fitting? ANY help is appreciated thanks guys.
CF Veteran
Joined: Apr 2011
Posts: 4,825
Likes: 2
From: Indianapolis
Year: '99 and '91
Model: Cherokee
Like the title says... the Aux Radiator Cooling Fan isn't working. Just to ensure we're all talking about the same part, it's the electric fan located on the right side of the vehicle behind the radiator.
I'm aware this fan should engage in case the engine temperature reaches a certain point -- something like 215º -- or whenever I turn on the AC. Anyhow, the bottom line is that it doesn't. I turn on the Jeep, switch the AC to Max, and the fan won't run. The AC was charged about 5 days ago, and the air blown into the cabin is cool, so the AC works and I don't believe it to be a low-pressure issue.
To troubleshoot, I checked all the fuses, which were fine. Then I checked the fan motor by connecting it directly to a 12V battery. It spun up without hesitation. Finally, I replaced the cooling fan relay, located in the Power Distribution Box on the left side of the engine compartment. After starting the car and turning on the AC, the fan still won't start. I even tried nudging it to see if it would start spinning, but to no luck.
So, AC is good, fuses are good, fan motor is good, and relay is good, but the fan still won't start.
Any thoughts?
The above issue is on my 2001 Jeep Cherokee Sport.
I'm aware this fan should engage in case the engine temperature reaches a certain point -- something like 215º -- or whenever I turn on the AC. Anyhow, the bottom line is that it doesn't. I turn on the Jeep, switch the AC to Max, and the fan won't run. The AC was charged about 5 days ago, and the air blown into the cabin is cool, so the AC works and I don't believe it to be a low-pressure issue.
To troubleshoot, I checked all the fuses, which were fine. Then I checked the fan motor by connecting it directly to a 12V battery. It spun up without hesitation. Finally, I replaced the cooling fan relay, located in the Power Distribution Box on the left side of the engine compartment. After starting the car and turning on the AC, the fan still won't start. I even tried nudging it to see if it would start spinning, but to no luck.
So, AC is good, fuses are good, fan motor is good, and relay is good, but the fan still won't start.
Any thoughts?
The above issue is on my 2001 Jeep Cherokee Sport.
Also, could it be the jeep wasn't at operating temp, the fan would not kick on for the AC? Just throwing that out there.
Junior Member
Joined: May 2011
Posts: 56
Likes: 0
From: Martins Ferry, Oh
Year: 1989
Model: Cherokee
Engine: L6, 4.0L (242 CID)
Junior Member
Joined: May 2011
Posts: 45
Likes: 0
From: Chapel Hill, NC
Year: 2001
Model: Cherokee
Engine: 4.0 L Inline 6
☠ CF Sheriff ☠
Joined: Nov 2009
Posts: 15,197
Likes: 18
From: Aberdeen, MD
Year: 1995
Model: Cherokee
Engine: 4.0L HO I-6, 703 Injectors, Brown Dog Super Engine Mounts
lol @ sagging on purpose.
it won't be that was for long...so enjoy it while it lasts a guess
granted, with those tires even at stock height it was VERY capable off road - just avoid large rocks lol
it won't be that was for long...so enjoy it while it lasts a guess
granted, with those tires even at stock height it was VERY capable off road - just avoid large rocks lol
Last edited by dukie564; Jun 15, 2011 at 08:01 AM.
☠ CF Sheriff ☠
Joined: Nov 2009
Posts: 15,197
Likes: 18
From: Aberdeen, MD
Year: 1995
Model: Cherokee
Engine: 4.0L HO I-6, 703 Injectors, Brown Dog Super Engine Mounts
Metal end tanks are preferable over plastic ones
http://diy.performanceradiator.com/
Junior Member
Joined: May 2011
Posts: 45
Likes: 0
From: Chapel Hill, NC
Year: 2001
Model: Cherokee
Engine: 4.0 L Inline 6
If its plugged into the right wires, start ur jeep. Then go to the plug on the thermostat housing, the temp sending unit, unplug it. Wait a min, and it should kick on.
Also, could it be the jeep wasn't at operating temp, the fan would not kick on for the AC? Just throwing that out there.
Also, could it be the jeep wasn't at operating temp, the fan would not kick on for the AC? Just throwing that out there.
Now, what does this mean? Do I have a bad temp sending unit?
Haven't tried getting the engine temp up yet to see if the fan kicks in. I'll do that later tonight and post the result.
CF Veteran
Joined: Sep 2010
Posts: 12,692
Likes: 6
From: Mercer County, NJ
Year: 2001
Model: Cherokee
Engine: 4.0L I6 HO
Okay... you were right. I started the jeep, unplugged the temp sending unit, and the fan started up shortly thereafter (and turned on the check engine light...). I plugged it back in, then turned on the AC. The fan spun for a few moments when the AC came on, then shut off.
Now, what does this mean? Do I have a bad temp sending unit?
Haven't tried getting the engine temp up yet to see if the fan kicks in. I'll do that later tonight and post the result.
Now, what does this mean? Do I have a bad temp sending unit?
Haven't tried getting the engine temp up yet to see if the fan kicks in. I'll do that later tonight and post the result.
☠ CF Sheriff ☠
Joined: Nov 2009
Posts: 15,197
Likes: 18
From: Aberdeen, MD
Year: 1995
Model: Cherokee
Engine: 4.0L HO I-6, 703 Injectors, Brown Dog Super Engine Mounts
mine usually hovers around 200 while driving, and can get to about 215 (enough to turn the aux fan on) if i'm sitting intraffic or at the drivethru
CF Veteran
Joined: Sep 2010
Posts: 12,692
Likes: 6
From: Mercer County, NJ
Year: 2001
Model: Cherokee
Engine: 4.0L I6 HO
