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  #61  
Old 06-28-2010, 08:44 PM
rockwerks rockwerks is offline
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Default Re: Electric fans anyone???

Quote:
Originally Posted by Chris View Post
Let me ask rockwerks a question real quick, is my truck suppose to make a roaring sound when my fan clutch is kicked in? I am curious as I just replaced it, and now that you mention not being able to hear it, I do not remember the old stock one making no noise. This one roars a lot, especially during the day when I am running my A/C, it even roars going 55-70 sometimes if I stomp it it will roar really bad, then it will kick out but before it makes the worst roaring sound in the world...

I may be taking this junky fan clutch back to Autozone and getting a new one, is this normal rockwerks?
You should not hear the clutch ever.

Id bet the Roar is not the clutch but another part failing or maladjusted water pump, or clutch on the AC. The serpentine belt might be too loose or too tight, both conditions can cause a squeal or roar.

I have been working on hundreds of cars for 40 years and I can not remember ever having a fan clutch make any noise. when it fails it locks up.

Id check belt tension and wear first. when the AC is on it puts a dramatic amount of stress on the belt and can cause a roar.

Then Id check the AC clutch. On our trucks the AC compressor runs during not only AC but also in defrost.

I have not had a lot of luck with Autozone parts in the past
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  #62  
Old 06-28-2010, 09:01 PM
Chris Chris is offline
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Default Re: Electric fans anyone???

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Originally Posted by rockwerks View Post
You should not hear the clutch ever.

Id bet the Roar is not the clutch but another part failing or maladjusted water pump, or clutch on the AC. The serpentine belt might be too loose or too tight, both conditions can cause a squeal or roar.

I have been working on hundreds of cars for 40 years and I can not remember ever having a fan clutch make any noise. when it fails it locks up.

Id check belt tension and wear first. when the AC is on it puts a dramatic amount of stress on the belt and can cause a roar.

Then Id check the AC clutch. On our trucks the AC compressor runs during not only AC but also in defrost.

I have not had a lot of luck with Autozone parts in the past
I hardly notice it when the A/C is off. When the truck is first started I hear it, it sounds like a wind tunnel if you're under the hood working on it, and the A/C clutch appears to be fine, no anti freeze leaking, and the water pump isn't lose at all. The belt is a brand new gator back, and the tension is new as well, not very old anyway. I also have replaced the idle as well. No squealing is present at all, just a loud roar, that will often kick in even when going 70 mile an hour, its most noticable when I floor it and rev the motor up, it will kick in almost all the time with the A/C on. I may be able to get it on video.

It rained here the other day, and I ran the A/C not on full blast or nothing but I don't recall hearing the noise at all during the rain we got.
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  #63  
Old 06-29-2010, 06:50 AM
rockwerks rockwerks is offline
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Default Re: Electric fans anyone???

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Originally Posted by Chris View Post
I hardly notice it when the A/C is off. When the truck is first started I hear it, it sounds like a wind tunnel if you're under the hood working on it, and the A/C clutch appears to be fine, no anti freeze leaking, and the water pump isn't lose at all. The belt is a brand new gator back, and the tension is new as well, not very old anyway. I also have replaced the idle as well. No squealing is present at all, just a loud roar, that will often kick in even when going 70 mile an hour, its most noticable when I floor it and rev the motor up, it will kick in almost all the time with the A/C on. I may be able to get it on video.

It rained here the other day, and I ran the A/C not on full blast or nothing but I don't recall hearing the noise at all during the rain we got.

This sounds interesting....Id love to hear/see it. It would be much easier to diagnose. Did the noise start after changes you made or before?
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  #64  
Old 06-29-2010, 08:06 AM
Chris Chris is offline
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Default Re: Electric fans anyone???

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Originally Posted by rockwerks View Post
This sounds interesting....Id love to hear/see it. It would be much easier to diagnose. Did the noise start after changes you made or before?
Well its hard to say but I do not recall it last summer with my old fan clutch, but during the winter months my old fan clutch begin to get real real hard to turn, it would actually turn the water pump moving the fan by hand. I took it up and smelt what smelt like a dried up bearing, and burnt metal. So I poured oil in it, and put as much grease in it, and put it on an impact, and turned it a good bit, put it back on, it was fine, I picked one up at Autozone a few weeks later, and replaced it. Now that its gotten hot outside I've really started to hear the roar.

Example I got up this morning at 7:30AM was on the road by 8AM, running the A/C as it was just a bit stuffy in the truck, the entire trip even stopping at stop lights my clutch never engaged, the difference was it wasn't humid or near as hot as it has been the last few days. Which would make me believe it would be the fan clutch. It is defiantly RPM related, if I rev the motor while what I believe is the clutch ENGAGED, it will make the roaring sound, if I set there with the hood up long enough and rev the motor a few good times it will go away. Not running the A/C will get rid of it almost completely even during the hottest part of the day.

Our work trucks have 2.3L's in them and they have the fan clutches on the fans, BUT you can turn those fans when they aren't running really really easy, mine even with the replacement you have to keep your hand on the fan while turning it, it will not free spin while the truck is off, the 2.3L's fan clutchs will. So there is defiantly a difference in the clutches on them, versus the clutch on mine.

I will get some video and inspect the truck a bit later perhaps you can diagnose the problem then.
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White 2004 Ford Ranger XL, Auto, 4.0 SOHC, 4x4 Base Model, 16" Explorer Rims. 3.73 Gears, No muffler(Sold)
White 1997 Ford Expedition XLT 3inch Suspension lift, 38 Firestone M/T's 98 4.6L Police Interceptor high flow injectors, Super 44, brand new rebuilt transmission, with 3.73 gears(Not mine no more)
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  #65  
Old 06-29-2010, 08:52 AM
bud0810 bud0810 is offline
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Default Re: Electric fans anyone???

ok so i have a 67 chevelle ss with a 383 in it i have ran clutch fans and it dynoed at 540 hp at the rear wheels when i switched to electric my hp at the rear wheels went to 545 BUT i only run the fans when i am stoped and cooling the motor or if i am just driving it around town. i have 3 10 inch fans with a custom shroud on 2 that pull the air and it is a 4 core rad.
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  #66  
Old 06-30-2010, 07:38 AM
rockwerks rockwerks is offline
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Default Re: Electric fans anyone???

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Originally Posted by bud0810 View Post
ok so i have a 67 chevelle ss with a 383 in it i have ran clutch fans and it dynoed at 540 hp at the rear wheels when i switched to electric my hp at the rear wheels went to 545 BUT i only run the fans when i am stoped and cooling the motor or if i am just driving it around town. i have 3 10 inch fans with a custom shroud on 2 that pull the air and it is a 4 core rad.
that dyno difference can be explained by atmospheric differences, fuel, a 10% humidity difference will make more HP, and yes removal of the mechanical fan will free up a few HP at best. about 1%
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  #67  
Old 06-30-2010, 11:16 AM
bud0810 bud0810 is offline
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Default Re: Electric fans anyone???

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Originally Posted by rockwerks View Post
that dyno difference can be explained by atmospheric differences, fuel, a 10% humidity difference will make more HP, and yes removal of the mechanical fan will free up a few HP at best. about 1%
same day couple min. difference (took out the clutch fan and put the electric on) in a climate controlled building same fuel. me and a buddy got in to it about this we work at gm proving grounds all controlled setting!
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  #68  
Old 06-30-2010, 01:45 PM
FireRanger FireRanger is offline
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Default Re: Electric fans anyone???

Different engine, different fan clutch, different fan. The HP gain in a ranger is negligable. Results on other vehicles may vary, as in your case.
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  #69  
Old 07-03-2010, 06:18 AM
bud0810 bud0810 is offline
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Default Re: Electric fans anyone???

ok so we just did the same thing with a caynon same results gain of about 4 hp next time i get free time i will put my ranger on it and text it out!
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  #70  
Old 07-03-2010, 09:20 AM
West West is offline
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Default Re: Electric fans anyone???

Like someone said earlier, people only hear what they want to hear. Everyone's saying that they want numbers, and guess what, someone gave you numbers that showed improvement. And you still don't believe it. Now it sounds like your just making excuses to cover your previous statements.
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  #71  
Old 07-03-2010, 12:21 PM
Areyouforcereal? Areyouforcereal? is offline
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Default Re: Electric fans anyone???

Hey Chris, the noise you are describing is the noise of the fan turning. It sounds like like a wind tunnel because it is. The clutch is locked up causing the fan to be turning at engine speed all the time. I Had the same noise and as soon as I removed the fan, the noise went away. That is the whole reason I switched to an electric fan. The noise was driving me crazy. I changed the clutch several times, but it wouldn't be long before it needed replacing again, so I said f-it and installed an electric fan. No more roaring noise.
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  #72  
Old 07-07-2010, 09:17 AM
bolivartech bolivartech is offline
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Default Re: Electric fans anyone???

Is the fan from an early '90s Taurus a direct bolt on to a 2.5L Ranger? I've found online a salvage yard about 20-30 minutes away has a few.
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  #73  
Old 07-09-2010, 09:48 AM
Areyouforcereal? Areyouforcereal? is offline
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Default Re: Electric fans anyone???

None are a direct bolt on. You have to make some mounting brackets, or use those push thru the radiator plastic things. (not recomend, they will eventually cause a leak.) It should however still fit on your radiator just fine.
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  #74  
Old 07-13-2010, 01:20 PM
SteveMet SteveMet is offline
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Default Re: Electric fans anyone???

If electrcal fans are of no use and so unreliable (rockwerks and fireranger) why do so many car manufactures install them ?
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  #75  
Old 07-13-2010, 02:16 PM
FireRanger FireRanger is offline
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Default Re: Electric fans anyone???

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Originally Posted by SteveMet View Post
If electrcal fans are of no use and so unreliable (rockwerks and fireranger) why do so many car manufactures install them ?
Where did I say they were useless an unreliable? I have one. If you actually bothered to read anything I wrote, you would see that.
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