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04dakota
Dodge Dakota
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12/14/2008
19:56:53
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 Subject: 3.7 - Radiator Fan Question - HELP!!!
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Message:
I believe my electric radiator fan is bad. My engine will overheat if it idols for a long period of time or if I'm driving extremely slow. When I'm at normal highway speed, the engine stays cool. When idoling, I can watch the temp. gauge climb, but the fan never kicks on.
My question is about a fan that O'Reily Autoparts sold me. The name brand is Hayden Automotive. Upon closer inspection, it appears to be a fan that is made for several different vehicles. My factory fan has a wiring harness. This one has only a yellow and a black wire. Can this one be used? Any ideas or help would be greatly appreciated. Thanks
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daddio
Dodge Dakota
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12/15/2008
09:10:40
|  RE: 3.7 - Radiator Fan Question - HELP!!!
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are you sure it is the fan motor and not just a relay or fuse? have you tried putting 12vdc directly to your stock fan the see if it runs or not?
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?
Dodge Dakota
JOIN HERE
12/15/2008
10:39:53
| RE: 3.7 - Radiator Fan Question - HELP!!!
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Message:
Probable that black wire needs to be grounded
= attached to chassis
and yellow to 'power' .
There should have been some kind of diagram
or instructions with that fan ?
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04dakota
Dodge Dakota
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12/15/2008
21:22:41
| RE: 3.7 - Radiator Fan Question - HELP!!!
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Message:
I checked the fuse under the hood for the fan. It's not blown.
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daddio
Dodge Dakota
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12/16/2008
09:13:30
| RE: 3.7 - Radiator Fan Question - HELP!!!
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Message:
did you check the relay? or put 12vdc directly to the fan from the battery? that's an easy way to make sure the fan motor is actually bad.
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04dakota
Dodge Dakota
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12/16/2008
10:35:30
| RE: 3.7 - Radiator Fan Question - HELP!!!
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Message:
I will try that. Not trying to sound dumb or anything, but how would I connect 12vdc to the fan from the battey? The fan has a wiring harness with a quick connect on the end of the wires.
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daddio
Dodge Dakota
JOIN HERE
12/16/2008
10:49:30
| RE: 3.7 - Radiator Fan Question - HELP!!!
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Message:
disconenct that plug for the stock fan. run 1 wire connected to the positive of the battery into one side of the plug then run one from the other side of the plug that you can momentarily touch to ground and if the motor is still good it will turn. to check to see if it is a relay, unplug a known good relay, such as one for the horn or a/c and swap it for the one for the cooling fan. then if you fan works, it's the relay.
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04dakota
Dodge Dakota
JOIN HERE
12/16/2008
11:51:19
| RE: 3.7 - Radiator Fan Question - HELP!!!
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Message:
Thanks daddio. I will try both and post the results. I really appreciate your help.
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daddio
Dodge Dakota
JOIN HERE
12/16/2008
12:28:21
| RE: 3.7 - Radiator Fan Question - HELP!!!
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Message:
no problem, i hate to see people just throw parts/ money at something without exhausting all possible avenues to remedy the problem.
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04dakota
Dodge Dakota
JOIN HERE
12/19/2008
19:49:44
| RE: 3.7 - Radiator Fan Question - HELP!!!
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I'm back daddio. It was in fact the radiator fan. I hooked the new one directly up to the battery and it ran fine. When I hooked up the old one to the battery, nothing happened. I can't believe the fan motor just died like that. Thanks for your help.
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daddio
Dodge Dakota
JOIN HERE
12/19/2008
20:56:50
| RE: 3.7 - Radiator Fan Question - HELP!!!
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Message:
i've seen the fan motors die just like that. glad to see you've got it up and running again.
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