Odd chirp/squeal noise coming from 87GW - JeepForum.com
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post #1 of 20 Old 04-04-2013, 08:27 AM Thread Starter
1987GW
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1987 FSJ Wagoneer 
 
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Odd chirp/squeal noise coming from 87GW

Hi all,
My 87 GW has developed an odd chirp/squeal noise. It only happens above 5 MPH and doesn't seem to increase with speed. It's not a belt, as I can rev the engine in park and it makes no sound. It only happens under load. I've posted a short soundbite on YouTube (
). Curious as to your thoughts...

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post #2 of 20 Old 04-04-2013, 12:54 PM
RockRollin
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1990 FSJ Wagoneer 
 
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Location: Grand Haven Mi
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Sounds like many things. U-joints are first guess. Could just be dry, but every chirp your losing metal. It will cause heat as well. So if u-joint, may not feel play in the joint if just dry, but it will get warm after chirping a while

"I like fun" Edd
Clawed: 90GW, TFI, Streetfire, 3"lift all spring, 31"BFG ATs, working RKE, Edel2131, Holly 1850, mild cam,
05 Renegade OME 927, 947, top plate, JBA 4.5s
"Just Jeepin it real"
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post #3 of 20 Old 04-04-2013, 01:05 PM Thread Starter
1987GW
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Quote:
Originally Posted by RockRollin
Sounds like many things. U-joints are first guess. Could just be dry, but every chirp your losing metal. It will cause heat as well. So if u-joint, may not feel play in the joint if just dry, but it will get warm after chirping a while
Are they easy to lube? Grease fittings, etc easily accessible? This is my first GW and am just learning as I go....
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post #4 of 20 Old 04-04-2013, 01:40 PM
RockRollin
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Quote:
Originally Posted by 1987GW View Post
Are they easy to lube? Grease fittings, etc easily accessible? This is my first GW and am just learning as I go....
You'll have to look for grease fittings, most do, some don't. If its dry the chirping is rust dust most likely. If you can get them to quite down, it won't last very well. First off try to verify that's what is going on. You may see some reddish dust around the inside of the caps

"I like fun" Edd
Clawed: 90GW, TFI, Streetfire, 3"lift all spring, 31"BFG ATs, working RKE, Edel2131, Holly 1850, mild cam,
05 Renegade OME 927, 947, top plate, JBA 4.5s
"Just Jeepin it real"
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post #5 of 20 Old 04-04-2013, 08:53 PM
olliehopnoodle
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Motor mounts. Under load the engine shifts just enough for the fan to hit the shroud. Does it do it at cruize speed or only under load?

82 Cherokee WT - SOA/SF/agr box/Borgeson ujoint steering shaft/401/performer/holley TA/HEI/BeCool/727/np208/d44(aussie)/amc20(ARB)/BFG 35X12.5/Corbeau Moab Seats/RCI 6point Harness,Hella Aux lights/tuffy console/killer32 slider bars/custom bumpers and roll bar/Alpine head unit/amps/speakers 2002 Liberty Limited Early edition - Basically stock
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post #6 of 20 Old 04-04-2013, 09:05 PM Thread Starter
1987GW
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Quote:
Originally Posted by olliehopnoodle
Motor mounts. Under load the engine shifts just enough for the fan to hit the shroud. Does it do it at cruize speed or only under load?
Pretty much just under load that I can tell. Wind noise becomes a factor where I can't determine after a point. Motor mounts expensive?
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post #7 of 20 Old 04-05-2013, 12:13 AM
pleontks
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I just had that same noise. It was a ujoint. It was dry, and destroying itself.

Beauty is in the eye of the jeepowner.
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post #8 of 20 Old 04-05-2013, 07:45 AM
olliehopnoodle
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ok, I am 'dumb'. The soundbite includes a picture of your truck, not a video. The soundbite has you actually driving it?

82 Cherokee WT - SOA/SF/agr box/Borgeson ujoint steering shaft/401/performer/holley TA/HEI/BeCool/727/np208/d44(aussie)/amc20(ARB)/BFG 35X12.5/Corbeau Moab Seats/RCI 6point Harness,Hella Aux lights/tuffy console/killer32 slider bars/custom bumpers and roll bar/Alpine head unit/amps/speakers 2002 Liberty Limited Early edition - Basically stock
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post #9 of 20 Old 04-05-2013, 07:56 AM Thread Starter
1987GW
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Quote:
Originally Posted by olliehopnoodle
ok, I am 'dumb'. The soundbite includes a picture of your truck, not a video. The soundbite has you actually driving it?
Yes-recorded sound using my phone, and only way I could figure out how to post it to the forum was to create a video, but that requires a pic...sorry for any confusion....
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post #10 of 20 Old 04-05-2013, 10:02 AM
olliehopnoodle
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My bad. I was struggling with why they thought it was u-joints when you were not moving.

With your foot firmly on the brake give it some gas (not moving). This will 'twist' the engine. If you get the sqeek it's the mounts. If you don't it most likely isn't.

Have you done any radiator work lately? Removed/reinstalled the shroud?

82 Cherokee WT - SOA/SF/agr box/Borgeson ujoint steering shaft/401/performer/holley TA/HEI/BeCool/727/np208/d44(aussie)/amc20(ARB)/BFG 35X12.5/Corbeau Moab Seats/RCI 6point Harness,Hella Aux lights/tuffy console/killer32 slider bars/custom bumpers and roll bar/Alpine head unit/amps/speakers 2002 Liberty Limited Early edition - Basically stock
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post #11 of 20 Old 04-05-2013, 10:44 AM Thread Starter
1987GW
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Not done anything....will try your recommended "stress test". Seems to make sense.
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post #12 of 20 Old 04-05-2013, 10:50 AM
RockRollin
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Quote:
Originally Posted by olliehopnoodle View Post
ok, I am 'dumb'. The soundbite includes a picture of your truck, not a video. The soundbite has you actually driving it?
that had me going for a bit too, wasn't till I heard the wind noise that it came together

"I like fun" Edd
Clawed: 90GW, TFI, Streetfire, 3"lift all spring, 31"BFG ATs, working RKE, Edel2131, Holly 1850, mild cam,
05 Renegade OME 927, 947, top plate, JBA 4.5s
"Just Jeepin it real"
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post #13 of 20 Old 04-05-2013, 04:06 PM
olliehopnoodle
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Yeah, the wind noise and the leaves not even moving should have been a giveaway.

Sometimes when folks do radiator work they put the shroud on 'wrong'. It's easy to do.

Try the stress test.

82 Cherokee WT - SOA/SF/agr box/Borgeson ujoint steering shaft/401/performer/holley TA/HEI/BeCool/727/np208/d44(aussie)/amc20(ARB)/BFG 35X12.5/Corbeau Moab Seats/RCI 6point Harness,Hella Aux lights/tuffy console/killer32 slider bars/custom bumpers and roll bar/Alpine head unit/amps/speakers 2002 Liberty Limited Early edition - Basically stock
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post #14 of 20 Old 04-09-2013, 01:24 PM Thread Starter
1987GW
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Quote:
Originally Posted by olliehopnoodle View Post
Yeah, the wind noise and the leaves not even moving should have been a giveaway.

Sometimes when folks do radiator work they put the shroud on 'wrong'. It's easy to do.

Try the stress test.
So just did the "stress test" with no replication of the noises. Oddly, after doing it (first thing I did after backing out), the noises are now gone. 2 things have changed since my last drive that I recorded - 1) the outside temp is now 85F, first warm day in a while. Been in the 40s-70s, and 2) I did the "stress test".

I doubt that it's temp related, unless warm temps loosened up the grease?Perhaps it means that in the process of testing, the engine moved "back into place", thus eliminating the sound? I'm having a lift installed next week, so will have the shop look at the U joints just in case, but find it curious that after a couple months of the sound, that it just stopped...more to follow if they find anything...
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post #15 of 20 Old 04-09-2013, 03:52 PM
revelc
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Mine is doing the same thing. I think it's the cover on the bottom of the tranny touching the flex plate. I am going to take it off and see what happens tomorrow.

EDIT
Only when it's cold. Only in reverse. I used an old radiator hose and traced it to the cover after all.

Wag Rebuilt 360, 260H, 727, Locked 44, AMC 20, 208, 31" M/T's, 4" Rustys, 2.5" Duals. SOON:SOA SF, 496, T400, Doubler, D60's, 37" M/T's <-TOY
Cherokee Rebuilt 360, 2" Duals, mostly stock. SOON: Hot Street 401, 4'' Rustys, 33" BFG A/T's maybe a T-case to get rid of Q-Track <-TOW RIG
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