Weird clinking sound after 4l80E install
01-10-2009, 10:59 AM
#1
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Weird clinking sound after 4l80E install So i finally got my 4l80e going, and now im getting this a weird clicking sound coming from somewhere from the tunnel, I want to say around the vicinity of the Torque arm.. No **** it sounds like a Locker differential. Its only happens when im starting off from a dead stop. When the car is rolling it goes away. Im wondering if my DS is to short because the slip yoke is hanging out like 2 ¼ inches. I may be totally wrong though. Any help would be greatly appreciated
Thanks
Rob
Thanks
Rob
01-11-2009, 10:56 AM
#5
How much can you push the yoke into the trans?
Is the yoke counterbored?
Does the output shaft have a shoulder or is it splined all the way.
It may or may not be the problem, but I wouldn't run a DS so short.
Even at 2 1/2" in it's just past the bushing. And if it's a non counterbored yoke on a tailshaft with a shoulder, it's probably binding up when the rear suspension compresses.
This is obviously all speculation given the fact I can't see it, and there aren't many details to go on.
Is the yoke counterbored?
Does the output shaft have a shoulder or is it splined all the way.
It may or may not be the problem, but I wouldn't run a DS so short.
Even at 2 1/2" in it's just past the bushing. And if it's a non counterbored yoke on a tailshaft with a shoulder, it's probably binding up when the rear suspension compresses.
This is obviously all speculation given the fact I can't see it, and there aren't many details to go on.
01-11-2009, 12:51 PM
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How much can you push the yoke into the trans?
Is the yoke counterbored?
Does the output shaft have a shoulder or is it splined all the way.
It may or may not be the problem, but I wouldn't run a DS so short.
Even at 2 1/2" in it's just past the bushing. And if it's a non counterbored yoke on a tailshaft with a shoulder, it's probably binding up when the rear suspension compresses.
This is obviously all speculation given the fact I can't see it, and there aren't many details to go on.
Is the yoke counterbored?
Does the output shaft have a shoulder or is it splined all the way.
It may or may not be the problem, but I wouldn't run a DS so short.
Even at 2 1/2" in it's just past the bushing. And if it's a non counterbored yoke on a tailshaft with a shoulder, it's probably binding up when the rear suspension compresses.
This is obviously all speculation given the fact I can't see it, and there aren't many details to go on.
The output shaft does have a shoulder with O ring, and im using a counter bored yoke with it... also when it does the cliking sound the car kind of bucks like if the yoke is not engaging all the way..... like i said in the original post, when its under load, it all goes away.
01-11-2009, 01:19 PM
#7
Your driveshaft may be short but I don't think it is causing the problem you have.
If the yoke was slipping, the car would eventually quit moving within a few miles. If it were the case I doubt there would ever be enough spline engaged to hold a run under any kind of load.
You could always pull it out and check. But I think it's time to look for other problems.
If the yoke was slipping, the car would eventually quit moving within a few miles. If it were the case I doubt there would ever be enough spline engaged to hold a run under any kind of load.
You could always pull it out and check. But I think it's time to look for other problems.
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01-11-2009, 01:38 PM
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Your driveshaft may be short but I don't think it is causing the problem you have.
If the yoke was slipping, the car would eventually quit moving within a few miles. If it were the case I doubt there would ever be enough spline engaged to hold a run under any kind of load.
You could always pull it out and check. But I think it's time to look for other problems.
If the yoke was slipping, the car would eventually quit moving within a few miles. If it were the case I doubt there would ever be enough spline engaged to hold a run under any kind of load.
You could always pull it out and check. But I think it's time to look for other problems.
01-11-2009, 02:58 PM
#9
I'd just take it out and look at the inside of the yoke. If it's slipping there, it will be obvious by looking at it.
And while it's out see how far it will go in until it bottoms out.
And while it's out see how far it will go in until it bottoms out.
01-11-2009, 04:43 PM
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no this aint no whine... like i said, it sound like a damn locker rear end...And i dont have a locker, so i shouldnt be hearing anything like that. plus it goes away, once it starts rolling, even if it is in 1st. the bucking is crazy too. I cant think of anything else it could be. Its got to be the yoke.
01-14-2009, 06:03 PM
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Yeah, im sure it is... i paid special attention when installing it to make sure i had it right. Is there away i can be check to be sure?
the yoke is the right length, my DS is just too short for it too go anymore into the tail housing. based on Webster’s definition, i guess it would be dynamic, but once the it starts to get going, it stops. i was thinking it could be the Yoke slipping on the splines, cause when it does click, It bucks, like if i have lost all power to the wheels. I have less that a ¼ mile on the setup, so if that is the case, that is probably why the tranny hasn’t spit the DS out yet.
I didn’t think that there could be that many possibilities causing my problem. So im thinking my first course of action will be to pull the DS tomorrow, and get another one the correct length., then work from there. If anything else comes to mind, let me know.
Thanks for everybody’s help, and ill keep you posted.
I didn’t think that there could be that many possibilities causing my problem. So im thinking my first course of action will be to pull the DS tomorrow, and get another one the correct length., then work from there. If anything else comes to mind, let me know.
Thanks for everybody’s help, and ill keep you posted.
01-20-2009, 04:27 PM
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Update So i drove to the shop on base today to pull the DS, and it stoped. Everything! The clinking, and the bucking...all of it has just stoped..im like WTF? don’t get me wrong, im not complaining... just curious now.
