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  #1  
Old 11-16-2011, 01:26 PM
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Question Engine vibration...

Hey guys well I'm back again with yet another issue that hopefully yall can help me out with.I have a 96' ram 4x4 2500 automatic with the 5.9 and it has a vibration that is driving me crazy because I can't figure it out.When I give it a good revv in either park or neutral,it vibrates pretty bad and even at low rpms at like around 1,000 rpms.Any ideas on what would cause the motor to vibrate?I mean you can literally feel it while sitting in truck. I was thinking that maybe it was the harmonic balancer but was told that it would be much worse.So I am ruling that out,I recently changed the plugs,wires cap and rotor.Could it be a bad or weak coil? I also have aftermarket headers and I'm missing a nut on the stud on number 6 cylinder and it has a little exhaust leak.Would the exhaust leak cause it to vibrate when I rev it up? Check engine light is'nt on so guess it's not throwing codes.I was also told that bad motor mounts would cause it but they look like they're in good condition along with tranny mount.I'm completely stumped on this one... Any help would be so greatful.Thanks in advance ~Ronnie~
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Old 11-16-2011, 04:07 PM
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Dose the truck give a bit of a growl then your stopped. The reason I ask is I had a mount go bad in a car and when I stopped with it in gear it would vibrate with a low growl. But be fine when I drove.
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Old 11-16-2011, 04:09 PM
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But if it happens all the time id look at harmonic balncer.
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Old 11-16-2011, 06:04 PM
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Hey "RAMFAM" no it really does'nt have a growl or anything like that it just vibrates when I rev it up in either park or neutral and gets a lil worse up around 2,500-3,000 rpms and vibrates as I let off pedal and the rpms comes back down to around a 1,000 rpm's.I honestly thought that it was the balancer but was told it would have a really severe shake if thats what it was. Maybe it is the balancer and it just has'nt got to that point yet to where it would be considered "SEVERE" Have you ever experienced this and have you ever attempted to fix it yourself? I wonder how hard of a job it would be to change out the balancer if that's what it turns out to be.
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Old 11-16-2011, 06:07 PM
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Is'nt the harmonic balancer the big pully on bottom of motor where the crank is located in motor? the one with the bolts in it? if that's it I was looking at it the other day while it was idling and it had a wobble in it so I guess that's what the issue is...
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Old 11-16-2011, 07:58 PM
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That will do it.
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Old 11-25-2011, 07:17 PM
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I'm going with...FAN CLUTCH! That's my story and I'm sticking to it. Shut 'er down and try'n spin the fan.

Stupidest and most annoying vibration on the planet...but the easiest to fix.

Last edited by Warlock III; 11-25-2011 at 11:56 PM.
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Old 12-29-2011, 03:22 AM
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Did you find any solution?
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Old 12-29-2011, 03:42 AM
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I also think that the Harmonic Balancer is a likely culprit, another name for it is a VIBRATION DAMPNER
They usually are a keyed steel pulley shaft with a rubber ring bonded to it & the rest of the pulley bonded to it
The easiest way to remove it is to remove the radiator, then use a breaker bar to remove the big bolt, then a crankshaft pulley tool & remove it. You should be able to rent one from Autozone or another parts store.

The rubber ring cracks & allows the outer pulley to move around, as it gets worse the vibration gets worse, if it gets bad enough, it will take out your radiator & may even dent your hood
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Last edited by GTyankee; 12-29-2011 at 03:46 AM.
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Old 04-02-2013, 09:07 AM
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Default Fix it?

Are you still on the forum? I have a 99 Durango with the same problem. Vibration. It drives nuts and I did all the same things you did.
Did you put on a new Vibration Damper? Vibration Gone?



Quote:
Originally Posted by DodgeGuy85 View Post
Hey guys well I'm back again with yet another issue that hopefully yall can help me out with.I have a 96' ram 4x4 2500 automatic with the 5.9 and it has a vibration that is driving me crazy because I can't figure it out.When I give it a good revv in either park or neutral,it vibrates pretty bad and even at low rpms at like around 1,000 rpms.Any ideas on what would cause the motor to vibrate?I mean you can literally feel it while sitting in truck. I was thinking that maybe it was the harmonic balancer but was told that it would be much worse.So I am ruling that out,I recently changed the plugs,wires cap and rotor.Could it be a bad or weak coil? I also have aftermarket headers and I'm missing a nut on the stud on number 6 cylinder and it has a little exhaust leak.Would the exhaust leak cause it to vibrate when I rev it up? Check engine light is'nt on so guess it's not throwing codes.I was also told that bad motor mounts would cause it but they look like they're in good condition along with tranny mount.I'm completely stumped on this one... Any help would be so greatful.Thanks in advance ~Ronnie~
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