(UKO) Unidentified knocking object. And pop.

AW4G63 · Mar 26, 2003

OK, Well I have posted this in the past and im back again. I have a ongoing knocking noise clanking and clanking. I have been going nuts and done a few things to try to diagnose this problem.

Heres what happens:

Im Stopped
I put the car in gear and release the clutch and start to move.
A faint knock is heard (clunck clunck clunck) (only when torque is on the driveline)
depress clutch, sound is gone.
go to 2nd gear and release clutch, clunck is heard faster.
depress clutch, clunck is gone.
release , clunck is cluncking in 3rd.
depress clutch clunck is gone and shift to 4th.
Clunck is now gone or im going to fast to hear it (road noise, exhaust ect.)

-----also----After a month of this cluncking noise this started----

Lets say im in 4th gear low RPM and I go full throttle, as boost builds up and I start to really move once I get to a high rpm there is a large "POP"

Only at high speeds.
(4th gear 2,000rpm= vrrrrrrrrrrrrrrrrrrrrrrrrrrrrrr"POP"rrrrrrrrrrrrr"POP"rrrrrrmmmmmmm , shift to 5th vrrrrrrrrrr"pop" rrrrrrrrrrrrrrr"pop"rrrrrrrrrr)

Sounds like it is coming from the front right area, but others who ride in the passenger side say it sounds like the rear and others say the front.

/\ hope that helped.

Things I have done to find problem.
Shaked front CVs
Shaked driveshaft
Didnt find exsessive play in either.

Just had buschur install a clutch & flywheel (act2600 & fidanaza alum fly)
I thought maybe it lied with in the clutch & flywheel but I was wrong.

I brought one of Buschurs guys for a ride yesterday but between my exhaust and pouring rain we could not hear much. But I didnt mention the "pop" because I thought the clutch fixed that, I found out it was still there on my 45 minute ride home.

Any thing you think could be a factor would be a GIANT help.

I think I may bring it back to Buschur to find and fix it. Those guys are very fast and great to deal with. And the fact that they know their shit like no one else sure does help.

This weekend Im going to check my U joints and anything else you think may be the cause.

Thanks guys.
Tom

I honestly have not a clue , Another member has this same problem, Im going to see if he will post here. Maybe between the two of us and some of you we can figure this out. :thumb:

UltraImports · Mar 26, 2003

on my integra, I had that sound until I pushed in the clutch. It's was the throw out bearing. Usually you replace this when you put in a new clutch (sometimes comes in the kit you buy). Good luck!

AW4G63 · Mar 26, 2003

Originally posted by UltraImports
on my integra, I had that sound until I pushed in the clutch. It's was the throw out bearing. Usually you replace this when you put in a new clutch (sometimes comes in the kit you buy). Good luck!

I know the sound your talking about , its a "tingtingtingting" LOL

, I have a new TOB. But thanks for the imput, any other Ideas?

LandoAWD · Mar 26, 2003

Friggin noob

AW4G63 · Mar 26, 2003

Originally posted by LandoAWD
Friggin noob

Stupid Knoobie

get a job hippie..... LOL

AW4G63 · Mar 26, 2003

TTT anyone? Anything? Its looking tranny related over a Nabr but Im doubting that....But who knows, its a dsm so I better make sure. LOL

bericson · Mar 26, 2003

Wow, I honestly had not a clue. That sounds odd, no one else seems to have a clue either.....

Lurker · Mar 26, 2003

Okay, I have the exact same noise, except mine goes away completely once I shift to 3rd gear.

It has been having this noise for about 500 miles or so.

My two guesses are:
1. Worn engine mount causing the engine/tranny to tilt back too much during load, and somehow the shift fork is touching something (???)
2. The two nuts on the tranny that are mentioned in the VFAQ ( shifter movement fix VFAQ ) are loose.

Currently, I'm working on (1). I have my front motor mount out, and put in some windo weld. I am currently waiting for the windo weld to be dry so I can put it back into the car.

Here is my driveline mod: CFDF clutch, RRE lightened flywheel, stock tranny ( w/ 160K miles ), stock transfer case, stock driveshaft, 3-bolt LSD of a talon with 60K miles.

AW4G63: How long/for how many miles have you had this tranny issue ?

When I did a search on this, I found at least two more members posted about this.

Oh yeah, btw, I have confirmed that this is tranny, and not driveshaft carrier bearing being worn. I had the car on a lift, and run the car on 2nd gear, while also lightly press on the brake to simulate load.

AW4G63 · Mar 27, 2003

Well the guys over at Nabr are saying its inside the tranny. I have had this problem since late sept early oct. I drive about 40-60 miles at day to & from work on the freeway. So you do the math.

In about the middle of Dec it started giving off this bone crunching, gut wrenching "POP".
Mine also goes away after 3rd but if I lay on the gas in 4th or 5th at low RPM and let it wind out it will start to violently "POP" every 1000rpm or so.

In starting to think I just need to pull the tranny and send it to Shep.....

Some one has to shed some light. The guys at Nabr made some good points but I think Im in straight denial...

ntjoe · Mar 27, 2003

I agree with Lurker, at least its something to look at. I had another car that did that on gear shifts and the bushings in the motor mounts had worn out and that was causing the metal to slap together when the motor lurched during shifting. Might not be it but might be something to look at before tearing into a tranny.

Another thing to do might be to change out your tranny fluid and if its glittery then you know what the problem is......

Good Luck.

Lurker · Mar 27, 2003

ntjoe: Sorry for the newbie reply..

So, if the tranny fluid is glittery, that means metal shavings, right ?
Does that always mean that the tranny will need to be rebuilt ?

My tranny shifts fine, no grind at all on any of the gear changes.

ntjoe · Mar 27, 2003

Originally posted by Lurker
ntjoe: Sorry for the newbie reply..

So, if the tranny fluid is glittery, that means metal shavings, right ?
Does that always mean that the tranny will need to be rebuilt ?

My tranny shifts fine, no grind at all on any of the gear changes.

No it dosent always mean it needs to be rebuilt, its just an indicator that something isn't right. My thought was that if AW4G63 pulls his fluid and its full of metal that might confirm that the shop is telling him. My talon had a ton of crap in the tranny when I bought it, and it grinded like a freight train going into 2nd. I changed the fluid, ran it about 2000 miles then changed it again. It was still crappy but the grinding was not so bad. Ran it another 5000, changed it, it was a lot cleaner. Now the grinding is almost totally gone. There is still a problem in there but it should hold until I'm ready to go for the full engine rebuild, then I can replace the sycnros and any bad gears....

BTW, when you checked the CV shafts, did you jack it up by the frame to do it? I know thats probably a knoob question but can't hurt to check all the stuff again....

Lurker · Mar 28, 2003

Okay.. just put in my front motor mount after doing the windo-weld mod on it.

The tranny is still making the noise.. Same thing, 1st and 2nd gear, and gone by third.
I'm guessing I will have to open up the tranny cover, and check those nuts mentioned in the VFAQ.

Oh well..

AW4G63 · Mar 28, 2003

Originally posted by Lurker
Okay.. just put in my front motor mount after doing the windo-weld mod on it.

The tranny is still making the noise.. Same thing, 1st and 2nd gear, and gone by third.
I'm guessing I will have to open up the tranny cover, and check those nuts mentioned in the VFAQ.

Oh well..

We will get to the bottom of it..............

Lurker · Mar 28, 2003

BTW, my gearbox is starting to make strange whirring noise on the rest of the gears now!! ( 3rd, 4th and 5th ).

It's not loud at all, but I'm very keen on gearbox noises these days.

We'll figure this out.. hopefully soon...

Lurker · Mar 29, 2003

Okay, some progress, I think...

Tonight I tried the shifter movement fix from VFAQ..
Turns out my top nut is finger loose! It didn't came off from the dimple, but it is loose. I'm guessing the high mileage ( 160K miles ) of the tranny cause the clearance between parts to increase.

Anyway, I tighten it, and will refill the tranny tomorrow ( waiting for the rtv to set ).

Hopefully this will fix it.

Lurker · Mar 29, 2003

Doh! The clunking noise is still there! Same thing, start on 1st gear when under load, and becomes louder at 2nd gear.

I'm gonna drive around some more to see if my shifter still moves under acceleration.

I am starting to wonder if this is not an issue with the transmission, but rather the transfer case or maybe the driveshaft ??
AW4G63: What's the status of your transfer case ? My transfer case is leaking, and I need to take it to the dealer for the recall.
I think the previous owner brought it to the dealer in the past, but it wasn't leaking at that time, thus the recall was not performed.

Man.. I'm out of ideas.. Help please guys

AW4G63 · Mar 29, 2003

Im real close to buying some CV joints. Ive shaken them & pulled and the whole deal but it just seems like a CV. You dont have the "POP" that I have so Im wondering if its the same deal. A local know it all dsmer in my area want me to bring it by, Im gunna and go from there. After I check the play in the drive shaft.

A CV is the only thing that makes sense to me, After being of jack stands for a weekend it some how became "out of line" or what ever...

My T case is fine, I had the recall done in April or May of last year, Good luck with that one.....Its fun getting them to do work for free. I havent had a chance to get under it yet so I will post when I do.

Lurker · Mar 29, 2003

Which CV joint do you think is going bad ? The front axles ?

BTW, it seems that the shifter movement fix in VFAQ does what it supposed to do. Also, I don't think I see any metal shavings when I drain the transmission fluid. Of course, I have never seen oil with metal shavings before.. What should I be looking here ? Are they visible, or do I have to rub the oil on my finger..

Please keep us updated on what you find though. I still think we have a very similar issue, except mine has just started ( 500 miles ago ).

I bet mine will start popping as well if left untreated after a while..

Good luck..

AW4G63 · Mar 29, 2003

Originally posted by Lurker
Which CV joint do you think is going bad ? The front axles ?

BTW, it seems that the shifter movement fix in VFAQ does what it supposed to do. Also, I don't think I see any metal shavings when I drain the transmission fluid. Of course, I have never seen oil with metal shavings before.. What should I be looking here ? Are they visible, or do I have to rub the oil on my finger..

Please keep us updated on what you find though. I still think we have a very similar issue, except mine has just started ( 500 miles ago ).

I bet mine will start popping as well if left untreated after a while..

Good luck..

Yeah thats true, you have only had it for 500 miles. By the end of the week I WILL KNOW the cause. I have to figure this out. I have brought about 10 people for rides and every one thinks its something different....WTF... It just pisses me off thinking about it.

I think its in the front and everyone else says its in the back. Go figure.

Lurker · Mar 30, 2003

Hi Tom:

May I suggest putting the car on the lift so that all four wheels are not touching the ground. Then run the car through the gears, expecially the problematic one. You can press on the gas, while using your left foot to lighly press on the brake pedal.. Then you can for sure, figure out where the noise is coming from.

( Pressing the brake pedal is to simulate load ).

TalonRacer18 · Mar 30, 2003

I personally think it is the cv joints, because i use to drive my dads 94 toyota corolla, and 1st thru 3rd it would make a popping noise, and when i cornered sharply it did it also.

Dyabolic · Mar 30, 2003

If you havent checked your tranny or motor mounts i would do so, i had asimilar problem when i bought mine.... i had a cracked tranny mount, and alot of mis diagnosis from the mechanics around here. GL on the problem bud.

AW4G63 · Mar 30, 2003

Originally posted by Dyabolic
If you havent checked your tranny or motor mounts i would do so, i had asimilar problem when i bought mine.... i had a cracked tranny mount, and alot of mis diagnosis from the mechanics around here. GL on the problem bud.

I need to do this, Although Bushur just did my clutch so I know they would have noticed a broken mount on the tranny. I'll check the motor mounts & the CVs asoon as its nicer out.

I never thought it was CVs because when I corner it doesnt make the noise any worst.

Lurker · Mar 30, 2003

dyabolic: I haven't checked my tranny mount ( I have similar issue with AW4G63 )

On your mount, was it the rubber that cracked or the metal part of the mount that cracked ?

Thanks...

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(UKO) Unidentified knocking object. And pop.

AW4G63

UltraImports

AW4G63

LandoAWD

Retired

AW4G63

AW4G63

bericson

Lurker

AW4G63

ntjoe

Lurker

ntjoe

Lurker

AW4G63

Lurker

Lurker

Lurker

AW4G63

Lurker

AW4G63

Lurker

TalonRacer18

Dyabolic

AW4G63

Lurker

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