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Discussion Starter #1
Hello. I have a Hyundai Accent, 2001 with 640,000 km (stayed with our family due to an emotional connection). Two months ago I changed gear oil (full replacement) + filter.
When I lowered the carter, there were some pieces of iron caught in the magnets.
Two weeks ago I did a 200km ride and after 100km a light bulb came on.
After I got home, I scanned and came up with 2 codes:
p1529
p0734
When the lamp was lit, a 'knock' was killed in the vehicle.

Also, fuel consumption increased (was a liter to 13 km, now a liter to 10 km) and in addition
I have noise when I press the gas pedal (when I do not press the noise disappears), attached is a video:







(In the garage, they offered to dismantle the dashboard at a cost of $ 600, without committing that they would solve the problem. A catalytic converter was replaced two months ago to renew, so the noise is not related to the converter either.)

I reset faults two weeks ago, and since then they have not returned, but the question is what to do.












 

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Those two codes are as follows:

P1529: TCM MIL On Request Signal. This basically means the Transmission Control Module is telling the ECM (Engine Control Module) to turn the MIL (Malfunction Indicator Lamp) on.

P0734: Fourth Gear Incorrect Ratio

Judging by the amount of large pieces of debris in the second picture there is some mechanical damage inside the transmission causing your problem.
 

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Suggest taking the car to a transmission specialist.
 

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Needle bearing failure.
How's 2nd gear? If bad, then kickdown drum needle bearing.
If no 4th gear, then OD (front) needle bearing.
If 2nd and 4th okay, then fore and/or aft planet carrier needle bearing.
 

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Discussion Starter #7
Needle bearing failure.
How's 2nd gear? If bad, then kickdown drum needle bearing.
If no 4th gear, then OD (front) needle bearing.
If 2nd and 4th okay, then fore and/or aft planet carrier needle bearing.
What is a needle bearing? What did the guy fix in this link?

If not, I would love a slightly more detailed explanation. Should the chalk bearing be completely disassembled and sent for renovation or is it possible to do it at home? I ask because I have some knowledge and that I have been taking care of my car at home for the last few years ..

Right now all the gears are working. But there is a 'knock' when the vehicle shifts gears, especially since the vehicle is still cold. In addition, fuel consumption has risen. And the shift between third and fourth gear happens at 3200 rpm, which seems to me quite high compared to the other gears.
 

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Sorry, been busy with projects, just saw your post. He replaced the OD (4th gear) front needle bearing, thrust washer, and thrust plate. They sit between the front of the end clutch retainer assy and the o/p (rear) end of the planet carrier assy. You say all 4 gears are working on yours, yet one of your needle bearings has failed. When the car is idling at a stop (in D) and you come off the brake and press the gas pedal, does the knock occur then (accelerating up to 6-10 MPH)? As you continue accelerating, does the knock occur going into 2nd? As you continue accelerating, does the knock occur going into 3rd? As you continuing accelerating, does the knock occur going into 4th? When you decel from 4th, does the knock occur going into 3rd? And, does the knock occur decel'ing into 1st (from 3rd)?
 

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Discussion Starter #12
I enclose a little bit of blueprints, if you can take a look and tell me what parts I need to order, I would be very grateful.
Maybe the catcar website has part numbers of all the parts ..

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Discussion Starter #14
I do not know what the ideal situation is in gear shifting. By and large, I do feel the gears shifting. Is this not right? By and large, it seems to me that when the engine is 'cold' the 2 gears come in less well and 'hit' is felt. But when the engine is 'hot', the gears come in better. Especially 1-2-3, I think the fourth did not go in well.

As for your questions, I shot a video, but I speak Hebrew. Do you understand anything from the video? If not, I will try to shoot an English video this week.
 

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Discussion Starter #15
are you trying to work out what bearings were replaced in the video?
I'm trying to figure out what the problem is with the gearbox in my car (in light of the findings I found while replacing the gear and filter (pieces of iron). I was told it was a needle bearing, and I was trying to figure out if what the guy in the video is doing is replacing this bearing, Do to fix the problem in my gearbox.
 

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Based on what I've seen and read on a few forums now if you found tiny cylindrical pieces of metal in the pan then it's likely this bearing. all I can tell you is in the video he has code P0734 which is 4th gear incorrect ratio.

In the video he shows the metal in the pan and the destroyed bearing.

He's removing the end cover to get to the end clutch and where that bearing is.

He purchases a bearing kit from the USA but you could just get the individual parts. I see there appears to be a bush or sleeve in this kit. i don't see him fit it.

I don't know what more is wrong with your transmission but if it had done 640000Km then it has lasted very well indeed. At some point it needs a rebuild and seals inside go hard and you could have other pressure issues causing harsh shifts.

You could try this repair and see how it is.

454083


Similar transmisson here:

 

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If you could answer each of the questions in posts 6 & 9, those answers should help refine the location(s). There are multiple needle bearings at play in multiple gears, and it's important to rule in or rule out creep (post 9) before zoning in on the end clutch's needle bearing.

Can you post an english video? (I don't see a video here, nor your pics.)

To replace it, is it necessary to remove the gearbox from the vehicle?
This will depend on the location(s). If the kickdown bearing (or band or drum) is involved, yes. If carrier bearing, yes. If end clutch/OD (front and/or rear), then no.

Plus, there likely are multiple issues.

Referring to Gerard's pics, Hyun changed the needle bearing design, going from closed to open. That's when the issues ensued.
 
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