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73-87 Chevy _ GMC Trucks => 4 Wheel Drives => Topic started by: beastie_3 on July 23, 2010, 06:19:41 pm

Title: Unknown "pop"
Post by: beastie_3 on July 23, 2010, 06:19:41 pm
When I turn my truck to the right, like turning into a driveway, I get can feel something pop repeatedly maybe like something binding. It seems to be consistent with the speed, although Im not sure I feel it if Im going real slow. I can feel it in the floorboard. It only happens when turning right. All steering parts are new except the steering box. I really hope I dont have a cracked frame. I will check. I also replaced the bearings and passenger side u joint two months ago, but I have manual hubs and they are not engaged. I checked for any contact at full lock and there isnt anything touching.
Title: Re: Unknown noise...
Post by: Grim 82 on July 23, 2010, 07:47:19 pm
I have a similar popping sound when making corners in mine, and if your foot is just resting on the clutch, you can feel the pedal drop a bit as it makes the sound. My best guess, which I am soon to test out on mine, is shot motor mounts and tranny mount, cause mine are awful. Another thing that comes to mind is maybe your front shackle on that side is binding because of a bad bushing, or if the leaf springs are compressing and sliding on each other and grabbing.
Title: Unknown "pop"
Post by: beastie_3 on July 28, 2011, 06:55:21 pm
When I am in right hand turns, only while under acceleration, something is popping, maybe binding. It sounds to be coming from the front driver side somewhere, but I really don't want to keep making the noise for fear of something breaking. I don't hear it when I coast through turns and it doesn't happen on left turns. It does it both when I have hubs locked and unlocked.

I have checked the frame for cracks and the wheel bearings.

All new steering components were put on last year, but it's just recent the noise has appeared.

Recently I have added new front shocks and new 6" leaf springs, from 4". It has a dropped pitman arm and raised steering arm, which have been on for awhile. Haven't adjusted any steering components since the 6" springs. Don't think that is the issue or not because it is repetitive through the turn.

The only thing I haven't checked to see if it is the sway bar (has frame drop brackets). I need to disconnect it and see if it goes away.
Title: Re: Unknown "pop"
Post by: Da67goatman on July 28, 2011, 08:27:56 pm
Sounds kinda like a bad u joint, but i can't say for sure.
Title: Re: Unknown "pop"
Post by: 1980c10 on July 28, 2011, 09:21:57 pm
My guess is your lower right side ball joint.
While turning under acceleration the suspension would lift whichever direction you turn.
remember to take the load off the suspension first.
If you have already replaced this, check it anyway as you could have gotten a bad part along with the other suspension components.
Title: Re: Unknown "pop"
Post by: beastie_3 on July 29, 2011, 01:30:10 pm
Ill check them I guess. The u joints and ball joints were replaced 2 months back.

Dont think it will be a u joint since they dont turn in 2wd...
Title: Re: Unknown "pop"
Post by: thirsty on July 30, 2011, 09:44:52 am
Beastie_3 when you installed your lift springs did you change the bushings for the upper shackle mount for the rear of the front springs? If you didn't maybe your shackle is moving back there.
I have also seen bad motor mounts that caused header flanges to hit the shackle bolt area.

I hope you find this problem.
Title: Re: Unknown "pop"
Post by: big bear on July 30, 2011, 11:51:02 am
yea, id double check ball joint. i know its proably not that, but always go over the easy annoying things . haha
Title: Re: Unknown "pop"
Post by: beastie_3 on July 31, 2011, 01:29:40 pm
Yup, springs have new bushings, torqued correctly.
Title: Re: Unknown "pop"
Post by: Irish_Alley on July 31, 2011, 10:08:47 pm
did you check the u-bolts
Title: Re: Unknown "pop"
Post by: beastie_3 on August 01, 2011, 11:09:21 am
No, I looked around them and didnt see any movement wear marks, and thought they should be ok since i torqued them down two different times.
Title: Re: Unknown "pop"
Post by: Irish_Alley on August 01, 2011, 11:24:37 am
i have had the center bolts break before maybe its causing some sort of slipping
Title: Re: Unknown "pop"
Post by: beastie_3 on August 01, 2011, 11:26:05 am
Ill check, but I doubt it. It probably has 50 miles on the truck since the lift kit.
Title: Re: Unknown "pop"
Post by: Irish_Alley on August 01, 2011, 11:28:33 am
had mine break within a couple days.
Title: Re: Unknown "pop"
Post by: beastie_3 on August 01, 2011, 05:59:28 pm
U bolts are good.

It isnt the steering stabilizer, U bolts, shocks, or sway bar.

I dont think it is the motor mounts because the transfer case shifter doesnt move when the pop occurs. Plus I have the center hump out right now.

I did not replace the upper shackle bushings.

I sprayed a bit of black paint around areas that could be the issue and Ill check later for wear marks.
Title: Re: Unknown "pop"
Post by: beastie_3 on August 10, 2011, 05:50:40 pm
I have the warn hubs. If I drove around the block without the hub there, will that be ok? The only thing holding the hub in is two snap rings. Im wondering if the hub is what is popping some how.
Title: Re: Unknown "pop"
Post by: 1979C20 on August 10, 2011, 07:24:44 pm
I would wrap plastic wrap around the open hole to avoid getting dirt in it. I think it will be fine without the cover though.
Title: Re: Unknown "pop"
Post by: Irish_Alley on August 10, 2011, 10:49:45 pm
i had a hub break and it would lock up and then it was like a chunk of metal would lodge up somewhere and lock the hub then it would pop and dislodge itself. found out it was broke when i went to use my 4x4 and dint have nothing up front.
Title: Re: Unknown "pop"
Post by: beastie_3 on August 11, 2011, 04:58:37 pm
Found the problem...sheared upper hanger bolt. thanks for everyone's help.
Title: Re: Unknown "pop"
Post by: beastie_3 on August 11, 2011, 05:00:11 pm
Im glad I sprayed black paint in areas I thought could be the problem. The eye of the spring was rubbing against the frame when I would turn.
Title: Re: Unknown "pop"
Post by: thirsty on August 12, 2011, 05:06:32 am
Glad you found it. Noises like that are worth looking into.
Title: Re: Unknown "pop"
Post by: beastie_3 on August 12, 2011, 03:33:27 pm
Is the bolt special, or will grade 8 at the hardware store work?
Title: Re: Unknown "pop"
Post by: Irish_Alley on August 12, 2011, 03:36:18 pm
thats what i use with no problems
Title: Re: Unknown "pop"
Post by: beastie_3 on August 12, 2011, 05:42:45 pm
Well back to square one again. Took the bolt out and it was good. Re-torqued everything again, swapped a hub, and its still there.