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David@TNT
 Post subject: HELP!! Radiator Fan electrical issue.
PostPosted: Tue Jun 16, 2009 5:59 pm 
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I have to admit I love the Jeep but its really pissin me off, the radiator fan has an intermittent issue. By that I mean it starts to run and shuts off within in 2 seconds of starting. Has anyone had this happen to them? Also the motor seems to be burying its self in fuel, can watch it on the scan tool and it show a calculated load of 100% with only 1/4 throttle, avg about 10-11 mpg, if you have any technical help it would be much apprectiated!! Thanks David
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David@TNT
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PostPosted: Mon Dec 07, 2009 12:05 pm 
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Anyone?
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Jeepjeepster
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PostPosted: Mon Dec 07, 2009 7:19 pm 
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Is the engine over heating? The electric fan should only kick on when the A/C is on or when the engine temp gets up around 215-220. Mine usually kicks on at 218F.

How many miles are on the Jeep? How long has it been since the spark plugs were changed? Does the Jeep seem to have lost power?

And if youre talking about that load rating on the scan gauge it says mine is always at 100% load, its not right. It also says Im making 100% HP at like 3k rpms. :roll:

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USAFCOP
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PostPosted: Mon Dec 07, 2009 10:08 pm 
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SFA doesn't snap at the ball joint
SFA doesn't snap at the ball joint
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if it is an 02-05, check the cooling fan relay. It is a known issue, because the relay itself overheated, DC made the replacement that is twice the size of the original with a huge heat sync on top. Requres you to relocate the relay. It is located on the unibody in the engine bay below the battery toward the front. I had to replace mine a while back, Sorry, I do not have or remember the part number, and the Jeep is at RockLizards.

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David@TNT
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PostPosted: Wed Dec 16, 2009 8:30 am 
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Jeepjeepster wrote:
Is the engine over heating? The electric fan should only kick on when the A/C is on or when the engine temp gets up around 215-220. Mine usually kicks on at 218F.

How many miles are on the Jeep? How long has it been since the spark plugs were changed? Does the Jeep seem to have lost power?

And if youre talking about that load rating on the scan gauge it says mine is always at 100% load, its not right. It also says Im making 100% HP at like 3k rpms. :roll:



No it is not overheating yet, but the fan is certainly not kicking on.. Well I say that it will hit every two minutes or so but turns off no sooner that it turns on.. My experience is when the a/c is turned on the fan will hit regardless of the engine temp. And maybe 15k since plugs were changed, it dosent really matter how conservative I drive it, the best it get is 12-13mpg which is mostly highway..
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David@TNT
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PostPosted: Wed Dec 16, 2009 8:32 am 
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USAFCOP wrote:
if it is an 02-05, check the cooling fan relay. It is a known issue, because the relay itself overheated, DC made the replacement that is twice the size of the original with a huge heat sync on top. Requres you to relocate the relay. It is located on the unibody in the engine bay below the battery toward the front. I had to replace mine a while back, Sorry, I do not have or remember the part number, and the Jeep is at RockLizards.



I have heard of this but does it have two relays? I have a fuse box with a high and low speed fan relay and replacing them dosent help, it jus dosent recieve a ground signal on pin 85 of the the relay, so would that be the computer or is there something that recedes that?
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USAFCOP
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PostPosted: Fri Dec 18, 2009 12:25 am 
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SFA doesn't snap at the ball joint
SFA doesn't snap at the ball joint
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This is not in the fuse/relay box, it is a rectangular piece that is bolted to the body in the engine bay. I would put money on that being the issue. Sounds like what happened to mine when it went.

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03CDKJ
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PostPosted: Fri Dec 18, 2009 12:31 am 
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USAFCOP
 Post subject: Re: HELP!! Radiator Fan electrical issue.
PostPosted: Sun Dec 20, 2009 12:25 am 
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SFA doesn't snap at the ball joint
SFA doesn't snap at the ball joint
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Thats it. Not hard to replace, just a PIA to reach. :JEEPIN:

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03CDKJ
 Post subject: Re: HELP!! Radiator Fan electrical issue.
PostPosted: Sun Dec 20, 2009 1:05 am 
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