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2001 Durango Fan Clutch Issues?

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Old 06-25-2010, 06:56 PM
seancmcdaniel seancmcdaniel is offline
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Default 2001 Durango Fan Clutch Issues?

2001 Dodge Durango - engine temp is fine while moving, but temp increases when at stand still. Radiator was flushed and fluid replaced last week. Second fan does not engage when temp rises. Possible bad fan clutch??? How do we replace it?, or does anyone have any other possible fixes???
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Old 06-25-2010, 07:56 PM
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the electric fan (i believe this is the second fan you refer to) does not engage until you hit 210 or 215 (or with the A/C turned on)

you can determine if you have a bad fan clutch by opening the hood (with the engine off of course) and spinning the fan by hand, more than 1/2 a turn the clutch is bad, my clutch with 92xxx on it spins about far enough to put the next blade up (just for reference) if it spins somewhere in btwn the two i would say it is going bad, and replacing it wouldnt be a bad idea (not necessary, but cannot hurt)
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Old 06-27-2010, 01:10 AM
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Easy way to test your efan. Open up the PDC in the engine bay. PDC located right in front of the master cylinder next to battery. Look for the relay marked a/c compressor. All the relays are basically the same. Remove one fron another location and pug into the compressor spot. If the fan comes on, you have a bad relay. If no action, you can crawl under the D and look for a green colored connection to the efan. Unplug the connection and run a hot wire directly from the battery to the plug. If the efan does not start with the direct feed, you need to replace the efan.
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Old 06-27-2010, 08:35 AM
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exactly dan, but a bad e-fan usually wont cause cooling issues
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Old 06-28-2010, 10:17 AM
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Not true my friend. I had the efan go out on me and it caused an almost major issue. It was last summer and stop and go traffic going towards bronx zoo. The D was doing fine on the cross bronx until we hit traffic. Stuck in traffic with the A/C on w/o the efan caused the D to go into "limp" mode. Temp was thisclose to right hash mark. I had to turn off the D and let her cool with the wife and kids in the D. Glad I found a shaded spot for that. Waited until she was cooled enough to drive carefully back home. Needless to say the day was shot! LOL! Found out the efan motor was DOA so swapped it out and put in an FAL controller, no overheating problems so far! (Knock on wood). (Knocking on head).
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Old 06-28-2010, 10:57 AM
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under normal conditions the efan being bad wont be noticed bc the efan does not go on until the car starts to overheat (210 or 215 degrees) the A/C was also part of your issue, mine has never run unless the A/C is on, my temp never climbs above the half way point no matter how long i sit in traffic. (the only way a bad e-fan would manifest itself as a cooling problem is in your situation where you have the A/C on which throws heat out in that area)
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Old 06-29-2010, 10:06 AM
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Exactly! I had the a/c on during summer in stop and go traffic. It was doing fine on the expressway until I hit traffic. Then the problem manifested itself. So we're basically saying teh same thing?
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Old 06-29-2010, 10:18 AM
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from reading his post, and him NOT mentioning the A/C being on, i would say the fan definitely needs to be replaced, but that he might also have a bigger problem with his cooling system, and that he should look into it before he causes problems byoverheating the truck, that is all.
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Old 06-29-2010, 10:20 AM
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2 more things to check on a mechanical fan clutch are to grab it and rock it forward and backward. If there is any play it is bad/going bad. The other would be fluid leak. Any fluid leaking from the fan clutch is bad.
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Old 06-29-2010, 10:22 AM
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You know what? That's true. I just assumed the a/c was on due to his posting at the end of june. That's why I used my experience. And what are you doing on here??? Should you be in lab or something???
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Old 06-29-2010, 10:23 AM
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im at work wasting time since we dont have any work to do today . . . (yup getting paid to sit on my *** )
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Old 06-29-2010, 10:26 AM
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Same here! ^5 BTW, it seems alot of a/c problems crop up during the beginning of summer. Maybe you can write up an editorial on maitaining the a/c system during the off months?...
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Old 06-29-2010, 10:33 AM
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that actually a good idea, ill have to talk to pete about that and putting together a basic A/C maintance/repair thread . . .
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Old 06-29-2010, 10:35 AM
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Yeah, I meant you and pete. I'll hang out and thorw in a comment or two from the peanut gallery. LOL!
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Old 06-29-2010, 07:26 PM
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Default Please settle argument so we can get this D repaired! Thks

Thanks, guys, for the great feedback. I need to add a couple more issues for you to tackle:

1. When the D starts to overheat (only when sitting still - never while moving) - we've had the AC on the entire time and the AC works great - there's a 'grinding'-type noise coming from the front of the engine. It gets really loud. Like I said, it only happens after the truck starts to REALLY overheat and with the AC on. We were just told that the noise was coming from the air compressor clutch (that the bearings were bad) and that we need to replace the entire compressor. Our question . . . if the clutch was BAD, would that noise occur WHENEVER we engaged the AC and not just after it has run for 10-20 minutes and started to overheat? Can bearings go bad and then work fine and then go bad again?

2. We were also told that it was DEFINITELY NOT THE FAN CLUTCH. However, the fan NEVER kicks in and the truck never 'roars' like it used to (when the fan was engaging). They want to just replace the thermostat to SOLVE the overheating problem, without touching the fan/fan clutch?? Everything you've said, and also what I've read other places, says to 'turn the fan'. Which fan? The large one (that works) or the little one, in front (that's NOT turning)? With the truck OFF of course.

3. We're new to this so we need some clarification . . . the round, silver part behind the main (large) fan is the fan clutch, correct? Having said that, does that silver thing actually work as a clutch for the smaller fan in front of the large fan? This has been a REAL topic of discussion!

4. We did replace the fuse and relay and it had no effect on the fan motor engaging.

I'm just trying to figure this out 'logically':

The odds of the air compressor clutch going bad and the air compressor continuing to work, without issue or noise, for the better part of 30 minutes before FINALLY making the grinding noise (and that noise isn't there when you RESTART the D later with the AC going), just don't add up??

Our D has over 172K (this is the FIRST major issue - we LOVE this truck!), and is well past due for a thermostat, so replacing it isn't a problem. However, from what I've read, if the thermostat is actually BAD, wouldn't the truck run hot on the highway as well as sitting still? And, will replacing the thermostat allow the fan to kick in?

Please help - money is tight - we need the truck - this whole issue is sending us to divorce court!

Thanks
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Old 06-29-2010, 10:31 PM
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ok, im going to break this down for you as best i can right now

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Originally Posted by seancmcdaniel View Post
Thanks, guys, for the great feedback. I need to add a couple more issues for you to tackle:

1. When the D starts to overheat (only when sitting still - never while moving) - we've had the AC on the entire time and the AC works great - there's a 'grinding'-type noise coming from the front of the engine. It gets really loud. Like I said, it only happens after the truck starts to REALLY overheat and with the AC on. We were just told that the noise was coming from the air compressor clutch (that the bearings were bad) and that we need to replace the entire compressor. Our question . . . if the clutch was BAD, would that noise occur WHENEVER we engaged the AC and not just after it has run for 10-20 minutes and started to overheat? Can bearings go bad and then work fine and then go bad again?
an A/C clutch wouldnt cause a grinding noise unless it was only partially engaging, the bearings in the a/c compressor pulley COULD be bad, but then they would grind consistently, check the pulley by taking off the serpentine belt (yea i know, but bear with me) and spinning the compressor pulley by hand, if it wiggles, or wobbles, or doesnt spin straight, true and smooth, you have a bearing going bad, unfortunately afaik that means you need to replace the compressor


Quote:
2. We were also told that it was DEFINITELY NOT THE FAN CLUTCH. However, the fan NEVER kicks in and the truck never 'roars' like it used to (when the fan was engaging). They want to just replace the thermostat to SOLVE the overheating problem, without touching the fan/fan clutch?? Everything you've said, and also what I've read other places, says to 'turn the fan'. Which fan? The large one (that works) or the little one, in front (that's NOT turning)? With the truck OFF of course.

the big fan in front of the engine is driver by a clutch, try spinning it by hand, if it is good it will only spin a little, if it spins more than 1/2 a turn i would replace it for sure, chances are this your problem since this is the fan which is known to cause the 'roar' sound you describe (especially in cold weather)

Quote:
3. We're new to this so we need some clarification . . . the round, silver part behind the main (large) fan is the fan clutch, correct? Having said that, does that silver thing actually work as a clutch for the smaller fan in front of the large fan? This has been a REAL topic of discussion!
this is a picture of the clutch itself,
Click the image to open in full size.

can be purchase here http://www.napaonline.com/Search/Det...+50022+2022007

this clutch ONLY DRIVES THE LARGER FAN!!!!!!!!!!!!!! (anyone who tells you otherwise is an idiot)
if the smaller fan is the one not working it is either a bad relay, loose plug, or a bad motor (the smaller fan is electric, and SHOULD go on with the A/C or when the engine gets over 215*F


Quote:
4. We did replace the fuse and relay and it had no effect on the fan motor engaging.
then try a hot feed from the positive batter terminal to the green wire from the smaller fan (crawl underneath and unplug it to see which one im talking about) if the fan doesnt turn on then you need a new e-fan

Quote:
I'm just trying to figure this out 'logically':

The odds of the air compressor clutch going bad and the air compressor continuing to work, without issue or noise, for the better part of 30 minutes before FINALLY making the grinding noise (and that noise isn't there when you RESTART the D later with the AC going), just don't add up??
no air compressor on these trucks, only a/c (refrigerant) compressor, but i explained how to check that above, chances are it is something else (bad fan clutch IMO, or a bad e-fan motor making the noise)

Quote:
Our D has over 172K (this is the FIRST major issue - we LOVE this truck!), and is well past due for a thermostat, so replacing it isn't a problem. However, from what I've read, if the thermostat is actually BAD, wouldn't the truck run hot on the highway as well as sitting still? And, will replacing the thermostat allow the fan to kick in?

Please help - money is tight - we need the truck - this whole issue is sending us to divorce court!

Thanks
the thermostat would cause a higher running temp, or overheating, or underheating if it were bad, depending on if it is a failsafe version or not, never hurts to have a new one handy.


ok, i hope i got everything, if i missed something ask again as i am gone on this for right now
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Old 06-30-2010, 12:22 AM
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I would think it is plausible that the "Grinding" he is hear is being caused by a faulty fan clutch... I had an older chevy that did the same thing, everytime the fan clutch decided it was time to make the fan do its thing it would grind bad... of coarse when i poped the hood and spun it it turned like a helicoptor at take off.
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Old 06-30-2010, 07:18 AM
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yup definitely a good possibility of that being true
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Old 06-30-2010, 04:51 PM
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Well I think he needs to replace with fan clutch. Next make sure the small electric fan is coming on when the A/C is on, if not fix the connections or replace the electric fan.
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Old 10-10-2011, 08:55 PM
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i acciddently cross threaded my fan clutch nut is there any way i could have it rethreaded
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Old 10-10-2011, 08:55 PM
 
 
 
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