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  #13  
Old 07-11-2010, 08:06 AM
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Re: 03 overland overheating

There are a few inputs that control fan speed. try it with AC on and at full temp. Mine used to turn real slow too or so I thought but it was alright. It can move allot of air.
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  #14  
Old 07-11-2010, 08:20 AM
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Re: 03 overland overheating

The fan spins 100-500 Rpm when engine is running to keep a minimum fluid flow in the system. When the engine heats up, the PCM should command the solenoid and the fan will rev up. If the solenoid wiring or solenoid itself has a problem, you could have a DTC set (normally DTC 1499). So check first if any DTC is present ( ignition key on/off 3 times and let it in on after the third time). When no faults stored, DONE will be shown. The solenoid itself is easy to replace, its hold in place with a Torx-T40 screw. Some power steering fluid will drip out, but if you have a new solenoid, you can install it without loosing much fluid.
Ofcourse the problem could be the fanmotor itself as well, but as it spins at low rev now, it seems to be ok. Just check by hand if it rotates easily with engine off. Watch your fingers, because the blades are quite sharp.
Check and clean the solenoid connector first, dirty or corroded pins could prevent the solenoid to be activated. The attached picture shows you the solenoid at number 5.
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  #15  
Old 07-11-2010, 11:44 AM
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Re: 03 overland overheating

Nice info, thanks. With a/c on it willl get hot, 220 and up, fan spinning real slow, turn off a/c and temp will fall below 200, fan still spins slow, but temp stays ok till the a/c is turned on. I will check fan and try to get codes and will get back to you all, again thanks for helping.
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Old 07-11-2010, 03:25 PM
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Re: 03 overland overheating

Ok, the fan spins real easy, and no I did'nt cut my self..lol. Wires on relay look fine and clean. No OBD codes, just the word (done).
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  #17  
Old 07-12-2010, 01:31 PM
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Re: 03 overland overheating

So maybe the best to look for someone with the DRB III scanner to see if the fan can be controlled with the scanner. I have no idea of the price of the solenoid, if its cheap you could try to change it first.
By the way, did you check the steering fluid level? No difference in the power steering feeling?
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  #18  
Old 07-12-2010, 02:18 PM
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Re: 03 overland overheating

Fluid level is in the mid range on stick when cold.
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Old 07-21-2010, 11:52 AM
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Cool Re: 03 overland overheating

New Here,My first JEEP,2003 Overland. Anything i need to watch for? http://www.wjjeeps.com/overland.htm
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  #20  
Old 07-21-2010, 01:00 PM
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Re: 03 overland overheating

Any update on your cooling fan problem?
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