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Two different noises I'm hearing in my rodeo... strange.

7.3K views 21 replies 15 participants last post by  Gizmo42  
#1 ·
When I first raised my torsion bars ... they were raised about 3.5 inches... I went to moab wheeling around for 3 day trip and ripped a CV boot, later on.. that CV joint fell apart... I replaced both axels with new boots and lowered the front... the CV axels aren't strained nearly as much as they were before, everything seems to be okay. I've probably put on 7000 miles since installing the new axels, no problems... other than some sounds. Not the sounds of CV axels clicking while turning, that's gone now with the new CV axels and hope to be gone for a LONG time as I have lowered the front suspension a pretty good amount.

Sound #1

The first time I raised my torsion bars and got new wheels/tires I started hearing a noise which sounded like its coming from the suspension from the front right wheel area. I replaced my shocks to all RS9000XL's.. none of them bottom up at all, everything seems great... BUT i still have that "clunky" sound in the front right.

I drove up to salt lake a couple weeks ago and let my buddy colton drive because I don't know the city too well yet. While sitting in the passenger seat, towards the front where my feet were sitting, over little bumps and rough tar-repairs, sewer man-holes, etc... I could FEEL the sound that I've been hearing.

I got down underneath to look for ANYTHING loose, i just can't find anything. The body mounts seem perfect, I checked the strut connection to the shock, tight!

Some days, this sound seems to get louder and more serious... I haven't been able to identify it.

Starting to sound like the suspension of my buddies 98 Grand Cherokee.. and that's embarrassing.

Sound #2

This one started out of nowhere a few weeks ago, the sound is a squeaky noise, like an old large wooden door you hear in all the scary movies. . . the sound comes from where it SEEMS to be below the door-hinge area near the driver door... but more towards the wheel-well. It's not the door and door-hinge it self, thats just what it seems to be closest too.
The only time it will actually start creeking is when the front left wheel suspension moves up and down slowly. . . So if I drive diagonally into someone's driveway with a 6 inch smooth dip. it creeks/groans the slower i go, the slower it creeks/groans as the front left wheel moves up and down... What could it be? I know it's not tires rubbing, i know what that sounds like. It basically sounds like the metal of the body straining or having play rubbing against another part of the body.

As much as I know a lot of isuzu drivers on this forum might just ignore these sounds, I just want to keep my rodeo in top notch quality as Possible. At 93,000 miles it... the interior looks as if its brannnd new and I just try my best to keep the whole rodeo that way.

I have very very little rust under-neath if any at all. Maybe two months ago a coated under-neath with 3M rubber spray to prevent rust in the most major of places as possible.

ANY input is greatly appreciated!
 
#2 ·
I had some noises on my 1998 Passport that eluded me for a long time. Smiley sat in the passenger side once and figured it out.

My hood's hinge joint was loose and was rattling. I put a small piece of rubber under the hinge and closed the hood. No more rattle. I checked and rechecked shocks and everything else till Smiley found it was the hinge. I had opened the dash and was tightened every screw I could get to. It was driving me nuts.

The other noise I was getting was the rear window rattling. A bit of black tape around the hasp fixes that for a long time.

As for your noise on the drivers side, I'm at a loss.

Joe
 
#3 ·
Noises such as a clunk in the front right.... Under the front right fender are your window res and your antenna. the window res has a tube that comes back toward the door and goes through the lower A pillar/firewall as well as the antenna wire. these have a tendancy to rattle around in there, and the antena wire is thick and heavy so its a substantial noise. pull your inner fender skirt and zip tie those to the inner body/frame of the truck. this may be your culprit.
 
#4 ·
Here are a couple of Left Field possibilities:

Sound #1:
Since yours is a 2nd Gen, it *might* be the passenger-side hood mount/hinge…
Several years ago I went for a ride in BigPoppa’s Passport, trying to help identify an odd ‘clunky’ sort of sound -- Once the source was located, not only could I hear it, I could actually see the edge of the hood moving up-and-down in perfect unison with the noise.

Sound #2:
Have you checked to see if any of that 3M Rubber Spray is making contact with another surface somewhere? â€" It’s probably a long shot, but it seems to me like that might cause a squeaky/creeky/groaning sound.

You did say "ANY" :wink:

[EDIT]
I see Joe already replied to #1 8)

Cheers!
Smiley
 
#5 ·
heh, you guys rock. I'll go check it all out right now! If I STILL can't seem to identify it, i've got a video camera and i might be able to capture a sample of the noise 8)

the rubber I applied MIGHT be a possibility :) ill look thru and everywhere where it's applied in that location.

-steve
 
#6 ·
Welp, Checked out the hood hinge, seems to be tight! Closing the hood and hitting the corner of the hood pretty hard did no good at reproducing the sound. Didn't rattle or clank.. just a thud of my hand against hot black metal :)

I checked the battery, its super duper tight. Checked the adjustable rubber stoppers for the hood, adjusted high enough to the point it makes the hood hard to shut. . . Took out the plastic shroud around the wheel, the antenna cable was secure tight in a rubber grommet along with the rear-windshield washer hose. Put it all back together. Looked some more, nah-thin.

Could it be something to do with the right torsion bar making my right wheel make clunking noises ? i mean.. to me, looking under neath everything looks great. But i'm not an expert! Maybe something is loose or adjusted incorrectly. Could it be ball joints ?... I'm not even sure where to look when it comes to the ball-joints, i just read about it all the time around the board.

EDIT: I have a broken stud on the front right wheel...
BUT, the thing is. When I'm stopped and i jingle the stud around with my finger, it sounds different from what it sounds like inside the vehicle while driving. Also, it seems to me that If i am driving around 40mph and hearing the clunking still... it couldn't be the stud because of the centrifugal force holding the stud in position of it not being able to move.

Looking on the board for similar things..

"bad lower control arm bushings" .. Where and how to I check this?

"bad sway bar bushings" They LOOK okay lol.
 
#9 ·
rule out that stud by jamming in some bubble gum and see what happens
You owe me a non-root beer covered keyboard.

Now that's funny right there.

Good stuff. I'd use silly putty myself.
 
#10 ·
possible sqeak could be from the swaybar bushings being dry and since the swaybar rotated in the bushing when you lifted it that could be the culprit,take swaybar loose and grease the bushings or try to spray wd40 or similar into the bushings.
 
#11 ·
ah the clunk, such a reassuring sound, have a look at your tie rod ends,

do they look like this?

1st looks fine doesn't it?
Image


....on closer inspection....i think the term is..."as dry as a nun's ...."

Image


drivers side is still wet but leaking non-the-less

Image


in mine you can feel the clunk in the footwell, and i know that to be it

hump the sides of your car... got a squeek?

-
next, those plastic wheel well guards, rubbing on the bumper? i cut mine down because they were grinding on the bullbar making it squeek
 
#15 ·
this just solved my problem with the clunking Im having when offroading in my rodeo. I need to call up matt and get some new boots for my driver side tie rods. Mine seem to like to clunk when in 4 low going up hills. If Im wrong correct me please. Also, my cv boots on the outside on both sides are torn right now.
 
#16 ·
boots - get mechatech. or get new ISUZU CVs from underdog in oregon (or washington)

The tie rod rubber - get some new ones for cheap or get poly (energy suspension) from any auto store and replace them unless of course the balls are worn and water damaged.
 
#17 ·
That squeak is probably your lower ball joints. Whatever side you turn to that makes the squeak is the culprit. Put new ones on and grease anything that looks like it needs grease.

I get the same exact clunk but when turning slightly or hard. I still haven't figured that out.
 
#18 ·
lorenzo816 said:
get beefy ones from Matt at Inde4x so you can grease those suckas.
i am, but because i am in australia, i am going to get a heap of stuff shipped at the same time (3" lift kit, sway bar disconnects, etc...)
should be no longer than a month at the most until i can afford it- waiting on a tax return
 
#19 ·
Sound number 2 definately sounds like a bottom ball joint to me - had exactly the the same thing a couple of years ago, just like a squeeky barn door
 
#20 ·
It sounds like it might be the wheel bearings. It is a pretty involved but straight forward procedure. My 96 Trooper manual recommends repacking them at 30k mile intervals.

Raise your truck and put it on stands. With the wheels off the ground, grab the top and bottom of the tire and then push on the top while pulling on the bottom. Then reverse the procedure. Look for any looseness in the tire. There should not be any play. If nothing else is loose i.e. balljoints, tie rod ends, links, etc. then it probably is coming from the wheel bearings.
 
#21 ·
With a knee on the front bumper, bounce the front end up and down. Do you still get the door creak? A good possibility could be either the upper or lower control arm bushings. Just got back from looking at a '94 4x4 Rodeo, and it had bad uppers, same creaking. A visual inspection can be made by lifting the rubber flap under each fender. You should be able to see rubber all the way around the washers at each end of the control arms. If the rubber appears torn or cracked, they are worn. In my experience, the bushings usually make noise before the ball joints.
If yoou decide to check the ball joints, I suggest you google "how to check ball joints". There are plenty of sites out there with instructions and pictures. Dennis