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#27573 - 11/11/02 12:01 AM Sounds like universal joint, but itís not
Anonymous
Unregistered


My car makes the same sounds as when you have a bad universal joint. When going 5 mph, or from dead stop, when you accelerate moderately, it clanks, makes exactly the same sound as universal joint. We checked the ujoint, it's not that. My tranny was abused by West Palm PD for 116k miles, plus I haven't changed tranny oil since. Could it be the tranny? What exactly in the tranny? Something else?

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#27574 - 11/11/02 12:03 AM Re: Sounds like universal joint, but itís not
JohnG Offline
Tech Admin
Grand Poobah

Registered: 06/15/01
Posts: 13025
Loc: Socialist state of MN
Broken gear in the diff.
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#27575 - 11/11/02 12:34 AM Re: Sounds like universal joint, but itís not
Anonymous
Unregistered


The car drives normally, accelerates WOT from a dead stop pretty good, have no problem with it whatsoever, except this clicking. How to find out if I have a broken gear in the diff? (with and without taking stuff apart)

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#27576 - 11/10/02 11:52 PM Re: Sounds like universal joint, but itís not
Dirt820 Offline
Resident Alcoholic
Poobah

Registered: 02/02/02
Posts: 5432
Loc: Machesney Park, IL
with the rear wheels off the ground, car in Neutral...
1)pull the cover off of the differential. lots of fluid in there, make sure you've got a decent sized pan to catch it coming out.
2)while the cover's off, turn the driveshaft by hand, and make sure the ring gear doesn't have any chips out of any of the splines, and that none of the splines are missing. same for the pinion gear.
3)if there are splines missing, chipped splines, etc., start saving money.
4)put the cover back on using a new gasket which is obtainable from your 'friendly' ford dealer.
5)on the pass. side of the diff, there's a plug that you use a 3/8" ratchet to unscrew, and put new gear lube in. i'd put 80/90 weight in, but i'm sure somebody here will have to disagree with me on that. put the fluid in until it starts to seep out of the hole, and put the plug back in.
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#27577 - 11/11/02 12:05 AM Re: Sounds like universal joint, but itís not
johnnyiroc Offline
Over the Hill

Registered: 10/14/02
Posts: 4064
Mine does same thing, its my new spider gears chattering, ,my old ones did it too. Caused by the wear in the carrier, where the right vertical spider gear recesses inside, I put new wheel bearings in the housing as mine were shot and it changed the angle of the shaft enough that it got much quieter, still barely noticible. Usually caused by highballing the right rear tire, When my diff goes im scrapping it just because the hole the gear recesses into is wore too far, will put a limited diff in or something.
You can take the spiders out and see little metal fusion on the surface, this metal used to be on my housing, now its not,it fused itself on to the spider gear, maybe if you need it I can send a pic of this. hope this was clear enough. [Ptftftftftf]
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#27578 - 11/11/02 12:08 AM Re: Sounds like universal joint, but itís not
johnnyiroc Offline
Over the Hill

Registered: 10/14/02
Posts: 4064
also does this sound go away on the highway, mine did, At first I thought it was a warped rear rotor, making the brakes chatter, not the case.
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#27579 - 11/11/02 12:16 AM Re: Sounds like universal joint, but itís not
Anonymous
Unregistered


Thank your for your input guys. johnnyiroc, it sounds like that only when you take off, from dead stop or to under around 10 mph, no matter how much gas you give it, or how much gentle you be with her, she does the sound. When you take off from 15 or more, no sound. Also, it does the sound only when you take off (around 10 mph or less), when you drive, either cruise or accelerate there is no sound. It be a time for me to change the lube there anyways, so I definitely will check on it this upcoming weekend.

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#27580 - 11/12/02 12:33 AM Re: Sounds like universal joint, but itís not
johnnyiroc Offline
Over the Hill

Registered: 10/14/02
Posts: 4064
if you are going to change the rear lube, you should pull the brake calipers, and rotors, pull the small bolt out of the pin in the spider set, slide the pin out,push the axles in 1 at a time , which the c-clip will practically fall out and the spiders will come out easily. new spiders are around 50 bucks, but well, mine still clanked anyway, butat very least you can see how worn the spider bushings and the (bearing surface) -not really a bearing) of the spider gear is worn, or how bad it has torn up the housing. Anyway you can put it all back together with out new spiders, unless you see some major prob, =broken gear, or something, but i doubt it, I have my old spiders, I should email you a pic as, well I dont know how to post it on here, you can see the metal that shouldnt be there kinda welded itself onto the gear, , it was part of the carrier housing., well let me know From my experience of this, if this is it, I would buy a new carrier housing, or a posi diff, or something., New gears didnt fix mine, but I didnt know the problem was that bad, until after we re did it all and it still happened.Just much quieter.Now barely noticable, was annoying. [nonono]
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#27581 - 11/12/02 02:04 AM Re: Sounds like universal joint, but itís not
terp96vic Offline
Member

Registered: 09/30/02
Posts: 131
Also, don't forget.."Friction modifier" is suggested to add in the new gear oil if you end up changing it..you can get it from Ford..it's only a couple bucks and comes in a small bottle..I think it's either 4 or 6 oz. Anyhow Ford knows what you'll mean. Good Luck! [Wink]
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#27582 - 11/12/02 09:44 PM Re: Sounds like universal joint, but itís not
johnnyiroc Offline
Over the Hill

Registered: 10/14/02
Posts: 4064
I believe friction modifier is only necessary for posi-limited slip diffs.
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#27583 - 11/13/02 02:27 AM Re: Sounds like universal joint, but itís not
Expo_P71 Offline

Member

Registered: 09/05/01
Posts: 258
Loc: Los Angeles, CA
quote:
Originally posted by MQ:
The car drives normally, accelerates WOT from a dead stop pretty good, have no problem with it whatsoever, except this clicking. How to find out if I have a broken gear in the diff? (with and without taking stuff apart)

My PI had the exact same problem when I bought it. It was the same thing that Johnnyiroc said. I replaced the carrier from inside the differential with one from a civilian Vic (I was going to replace the entire rear axle from the civilian vic but found that the gearing was different) the carrier was interchangeable only that it's not as beefy as the PI. The car was driving fine for about a year and now it has a new problem in which there is a noticeable clunk when I go from coasting to acceleration. I lifted the rear end and found that there is too much play in the differential.
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#27584 - 11/13/02 10:58 AM Re: Sounds like universal joint, but itís not
Anonymous
Unregistered


Thanx for the info. Your vic is looking good! [Smile]

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