Front end clunk/pop - Jeep Commander Forums: Jeep Commander Forum
Suspension / Lifts This is the place to discuss the suspension, lift systems, and other stuff underneath your Jeep Commander

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post #1 of 51 (permalink) Old 06-27-2017, 08:50 AM Thread Starter
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Front end clunk/pop

I just got a rocky road 2.25" lift installed and after getting it back it now makes a popping or clunking noise over large bumps. I looked under the car and it looks like there are new scratches on the front right strut assembly and the only difference I can see between the left and right side is that the sway bar end link on the right side isn't flush with the end link. Since the bolt on the right side is longer, and sits close to the strut I thought that could be what is making the noise and causing the scratches. I have no time to take it in anywhere before I have to drive 8 hours tomorrow so I was wondering if there was anyway of possibly fixing this at home? I'd post pictures but I don't think I'm allowed yet
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post #2 of 51 (permalink) Old 06-27-2017, 09:40 AM
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Sorry, I don't have an answer for you. Try to reply to more threads so that you can post a pic of it though.

After a spacer lift on my TJ, the sway bar shifted and a bolt would hit a frame section. Did it for years. It was a wrangler, I just dealt w the clunk. Eventually it wore a spot in that frame section. Hopefully someone here has an answer for you.
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post #3 of 51 (permalink) Old 06-27-2017, 10:40 AM
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I had this on my '06. More times than not, it's the sway bar. You could disconnect it then drive around and see if it fixes the prob. New bushings might be needed.

I drove around without mine for a couple of years.


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Last edited by Bobula; 06-27-2017 at 10:50 AM.
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post #4 of 51 (permalink) Old 06-27-2017, 12:51 PM
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Quote:
Originally Posted by skycommander View Post
I just got a rocky road 2.25" lift installed and after getting it back it now makes a popping or clunking noise over large bumps. I looked under the car and it looks like there are new scratches on the front right strut assembly and the only difference I can see between the left and right side is that the sway bar end link on the right side isn't flush with the end link. Since the bolt on the right side is longer, and sits close to the strut I thought that could be what is making the noise and causing the scratches. I have no time to take it in anywhere before I have to drive 8 hours tomorrow so I was wondering if there was anyway of possibly fixing this at home? I'd post pictures but I don't think I'm allowed yet
Read this thread---> https://www.jeepcommander.com/forums/53-suspension-lifts/10294-rough-country-clunk.html .

.

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post #5 of 51 (permalink) Old 07-16-2017, 02:29 PM Thread Starter
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Quote:
Originally Posted by Bobula View Post
I had this on my '06. More times than not, it's the sway bar. You could disconnect it then drive around and see if it fixes the prob. New bushings might be needed.

I drove around without mine for a couple of years.


Mine was clunking pretty bad before I lifted it and I put new sway bar bushings on and didn't have a problem after that. This seems to be a much louder noise. Almost popping instead of clunking. It's really bothering me though and I don't know what to do. Already spent more than I'd like to on the lift/tires and repairs lol. Still not sure why the front end sits higher
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post #6 of 51 (permalink) Old 07-16-2017, 07:37 PM
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Quote:
Originally Posted by skycommander View Post
Mine was clunking pretty bad before I lifted it and I put new sway bar bushings on and didn't have a problem after that. This seems to be a much louder noise. Almost popping instead of clunking. It's really bothering me though and I don't know what to do. Already spent more than I'd like to on the lift/tires and repairs lol. Still not sure why the front end sits higher
Pics would be helpful;

I believe the RR lift - like the RC lift is designed to be a leveling lift, which means it's designed to raise the front end more than the rear and level out your Commander to get rid of the factory, nose down stance.

I'm guessing your Commander is probably sitting level now - but because you aren't used to seeing it that way, you think the nose is sitting high - because it is sitting much higher now than you are accustomed to seeing.

I can tell you straight away to get your front upper differential bushing checked.

This is a known and common point of wear on both Commanders and Grand Cherokees alike and can cause the kind of clunking noise you are describing.

If your front upper differential bushing was already worn and you were hearing noise - the new sway bar bushings may have been just enough to temporarily band-aid the problem, while you still had the stock suspension/stance.

When you added the new RR lift into the equation, it was probably enough of a suspension stress/geometry change to get the front upper differential bushing to start making noise again.

I'm just speculating here, but, it sounds plausible to me.


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Last edited by Big Blue; 07-16-2017 at 08:00 PM.
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post #7 of 51 (permalink) Old 07-16-2017, 09:28 PM Thread Starter
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Quote:
Originally Posted by Big Blue View Post
Quote:
Originally Posted by skycommander View Post
Mine was clunking pretty bad before I lifted it and I put new sway bar bushings on and didn't have a problem after that. This seems to be a much louder noise. Almost popping instead of clunking. It's really bothering me though and I don't know what to do. Already spent more than I'd like to on the lift/tires and repairs lol. Still not sure why the front end sits higher
Pics would be helpful;

I believe the RR lift - like the RC lift is designed to be a leveling lift, which means it's designed to raise the front end more than the rear and level out your Commander to get rid of the factory, nose down stance.

I'm guessing your Commander is probably sitting level now - but because you aren't used to seeing it that way, you think the nose is sitting high - because it is sitting much higher now than you are accustomed to seeing.

I can tell you straight away to get your front upper differential bushing checked.

This is a known and common point of wear on both Commanders and Grand Cherokees alike and can cause the kind of clunking noise you are describing.

If your front upper differential bushing was already worn and you were hearing noise - the new sway bar bushings may have been just enough to temporarily band-aid the problem, while you still had the stock suspension/stance.

When you added the new RR lift into the equation, it was probably enough of a suspension stress/geometry change to get the front upper differential bushing to start making noise again.

I'm just speculating here, but, it sounds plausible to me.

If you're referring to the front axle bushings I just got those replaced.

These are the struts that the mechanic replaced when I needed new struts about a year ago. Im not sure if those could affect the way it sits.

http://m.autozone.com/suspension-ste...8474?location=

The front right upper control arm seems to be pushing grease out of both the top and bottom of the boot but the mechanic told me this was normal. I'm about to lose my mind over this. It's been one thing after another
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post #8 of 51 (permalink) Old 07-16-2017, 09:30 PM Thread Starter
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Also, I don't think I can post pictures yet but measured the front and rear from several different places and it looks like the front is sitting 1.5" higher than the rear
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post #9 of 51 (permalink) Old 07-17-2017, 01:30 AM
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Quote:
Originally Posted by skycommander View Post
Also, I don't think I can post pictures yet but measured the front and rear from several different places and it looks like the front is sitting 1.5" higher than the rear

If you're referring to the front axle bushings I just got those replaced.
You can post pics once you hit 5 posts - which you have.

If you measured your stance, and the front is sitting 1.5 inches higher than the rear, then something was not done properly - maybe or a wrong part - possibly the wrong sized spacer was used.

If the correct parts were used and the work was done properly, you would be sitting level, or very close to it, period.

I'd take your XK back to whoever did the work and say "WTF??"

I'm not referring to the front axle bushings - I am referring to exactly what I told you - the front upper differential bushing.

The front upper differential bushing and front axle bushings are 2 different bushings.

I suggest you get it checked.


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post #10 of 51 (permalink) Old 07-17-2017, 07:09 AM Thread Starter
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Here's some pictures
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