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Old 10-25-2009, 10:42 PM   #1 (permalink)
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Front End Popping When Turning

I bought a 2002 4WD a few weeks ago and have discovered a really loud popping sound from the front end when turning. But the thing that has me stumped is it only does it when 4wd is engaged. It is fine in 2wd or if I am driving straight in 4wd. It has a non-CAD front axle, so I would think that if it is drive train related, the noise would be present all of the time. So I'm not sure if did this before I bought it because I didn't turn it around in 4wd while test driving it.

But my guess is that it was fine. I found this problem out last night when I high centered the front axle on a concrete curb.....long story..and had to use 4wd to get it unstuck. Even though the popping sounds more like gears slipping, I'm betting it is suspension related, because in the process of high centering it, I also bent a lower control arm.

I'm planning to check it out tomorrow after work I, but I was hopping I could get some advise on things to look at. This is my first Dodge or truck without manual locking hubs, so I didn't know if there were things that I should look for.
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Old 10-25-2009, 11:02 PM   #2 (permalink)
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Well if your saying the truck is like hoping while in 4wheel drive, are you on pavement? My dads buddy used to full lock his truck on pavement till he nearly tore his front end off. I have heard it is pretty hard on the truck to have it in 4 wheel drive and to full lock the truck
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Old 10-25-2009, 11:10 PM   #3 (permalink)
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DO not drive in 4wd on dry pavement it may cause damage. I don't know the gear differences between the front and rear maybe someone will chime in. only use 4wd off road,wet or snow. turning in 4wd will make all kinds of racket as you found out the truck doesn't like it.
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Old 10-25-2009, 11:15 PM   #4 (permalink)
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Yeah i agree 100% mr.b
But if the gearing in the front and rear is different? How can people do boosted launches and not wreck anything or everything? Is it more to do with turning that has the gearing issues?
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Old 10-25-2009, 11:19 PM   #5 (permalink)
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Avoid driving in 4wd on pavement whenever possible. The reason for the popping is that the inside tire front tire is turning slower than the outside front tire but they want to be moving at the same speed. Although the noise you are hearing is "normal" for what you are doing, it is not good.
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Old 10-25-2009, 11:20 PM   #6 (permalink)
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It has nothing to do with gearing issues and everything to do with the different speeds of the tires while turning.
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Old 10-25-2009, 11:22 PM   #7 (permalink)
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Hey,



You might want to check the front u-joints as well... Often overlooked and forgotten!!! Might need greased if they have been replaced...

But on dry pavement the truck will hop and act pissed off!!! It's kinda spooky the first time you experience it!!

Remember these trucks have REAL 4wd, not all wheel drive like some others...(i.e. Chevy)!

I do have a stupid question though: What is the difference between a CAD, and non-CAD front end???

Later,
Winslow
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Old 10-26-2009, 12:19 AM   #8 (permalink)
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I agree with the u-joint idea. This is way out there but see if your coil spring on the popping side is bent or cracked, that might make an awful noise like that.

I gotta think about this I know I've had this happen and I'm trying to remember what the hell it was.
Tighten all of your suspension crap, track bar, control arms, anything else you can think of, check your coil springs, check your u joints, check to see if something is binding when you have it at full turn, drive shaft maybe?
Was it converted to manual lock out hubs?

Just throwing ideas at you.
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Old 10-26-2009, 02:27 AM   #9 (permalink)
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Well didnt he say its only when he is in 4 wheel drive? Could it possibly be your tires rubbing your control arm? My truck made a pretty loud clicking noise when my front u joints went. Im thinking its just the tires turning at different speeds. But best of luck, let us know how it turns out
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Old 10-26-2009, 02:56 AM   #10 (permalink)
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when i turn mine to the right mostly, all the way it will make a loud pop. dont really know what it is
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Old 10-26-2009, 07:48 AM   #11 (permalink)
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Thanks for all of the responses. I kinda disregarded the wheel speed differences at first because I don't have this problem with my old Ford. The tires on it will just slip on the pavement, but I guess that's the difference between the weight of a small block and a big ol' Cummins sitting over the front end. But I woke up this morning after a good nights sleep thinking that's the only logical thing.

I don't know on the Dodges if the front and rear have perfectly matched gear ratios. I know that with my old Ford....D44 & 9" that the ratios are a little different. But its 4.09 compared to 4.11s.

Someone may chime in with a better description but the CAD front axles have a two piece passenger side half shaft that is locked together via a vacuum actuated slide ring when 4x4 is engaged and it is unlocked in 2wd.
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Old 10-26-2009, 10:07 AM   #12 (permalink)
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Quote:
Originally Posted by Frog212 View Post
Thanks for all of the responses. I kinda disregarded the wheel speed differences at first because I don't have this problem with my old Ford. The tires on it will just slip on the pavement, but I guess that's the difference between the weight of a small block and a big ol' Cummins sitting over the front end. But I woke up this morning after a good nights sleep thinking that's the only logical thing.

I don't know on the Dodges if the front and rear have perfectly matched gear ratios. I know that with my old Ford....D44 & 9" that the ratios are a little different. But its 4.09 compared to 4.11s.

Someone may chime in with a better description but the CAD front axles have a two piece passenger side half shaft that is locked together via a vacuum actuated slide ring when 4x4 is engaged and it is unlocked in 2wd.
Hey,

What does the non-CAD have??? I thought all the fronts ends were the same???

These trucks behave a little different than some others... difference in transfers and such...

Later,
Winslow
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