C36 AMG, C43 AMG (W202) 1995 - 2000

98' C43 AMG Transmission Slipping (CEL)

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Old Apr 25, 2022 | 11:49 AM
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puchak's Avatar
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98' C43 AMG Transmission Slipping (CEL)

I've got a 98' C43 I picked up over the summer. Records from the seller shows it had it's services done before the sale, I attached them below.



Anyways, transmission started slipping a couple months back. If I hit a certain tight or wide turn (very situational) going 20 or so and tried to accelerating, it would drop into neutral and sort of jerk.

I've been pretty careful about it but alas it finally caught up to me in a bad instance where I accelerated into a turn, it jerked pretty bad once or twice and threw a check engine light on. It drove home just fine after the incident but it certainly needs to be checked out.

I'm going to get it checked out on Wednesday and in a couple weeks with another good tech, wanted to hear any thoughts or advice. No strange leaks or anything from what I've seen. Turned it on this morning, there is a whine coming from the very front of the engine.

Bonus: The car only has 37k miles.
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Old Apr 27, 2022 | 11:25 AM
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Update 4/27/22: Dropped it off at the technician today, the transmission appears to have a small leak that is dripping the fluid all over the exhaust and parts of the lower transmission. Transmission fluid was almost completely out.

Worst case scenario they need to pull out the transmission to clean up the mess, $3k. Let's hope that doesn't happen?

Lesson learned: Check your own damn fluids!
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Old Apr 27, 2022 | 12:19 PM
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99 C43, 73 911 targa
No dipstick era.... Grrrrrrrrr
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Old Apr 27, 2022 | 05:13 PM
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1999 C43 AMG, 2005 E55 Wagon
If it's truly just low there's absolutely no need for a $3k "just to see" operation. $3k is enough to fund a rebuild.

Just fix the leak and add fluid. If it doesn't work, then you move to rebuild most likely.
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Old Apr 27, 2022 | 05:36 PM
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Cont. Update 4/27/22: Picked the car back up, turns out the last guy who "serviced" it didn't actually refill the transmission fluid at all. It had less than half a quart of the stuff. Bearings were practically gone, so had those replaced. Car drives beautifully now!

Will be driving it around and testing things to make sure all is well. Hopefully, I do not have to revisit this thread but if I do - I will continue to document to help others.
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Old Apr 27, 2022 | 05:52 PM
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Glad to hear it's on the road again! Sorry that it had to be under those circumstances.
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Old Apr 27, 2022 | 07:09 PM
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It happens man, what can ya do. Did you ever find good spacer bolts? I remember you from an older thread of mine.
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Old Apr 27, 2022 | 07:27 PM
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Originally Posted by puchak
It happens man, what can ya do. Did you ever find good spacer bolts? I remember you from an older thread of mine.
Wasn't me, I run fully OEM setup except for my motor.
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Old Apr 28, 2022 | 09:53 AM
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C43 AMG with a tune up
Originally Posted by puchak
Cont. Update 4/27/22: Picked the car back up, turns out the last guy who "serviced" it didn't actually refill the transmission fluid at all. It had less than half a quart of the stuff. Bearings were practically gone, so had those replaced. Car drives beautifully now!

Will be driving it around and testing things to make sure all is well. Hopefully, I do not have to revisit this thread but if I do - I will continue to document to help others.
How much did it cost you in total?

Shop mechanic did he need to replace all brass bearings, nothing else damaged in the transmission?
There were hardly any lubrication in the tranny.
Must have been an amateur tech working in this car before?
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Old Apr 28, 2022 | 11:54 AM
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Originally Posted by MattCordell
How much did it cost you in total?

Shop mechanic did he need to replace all brass bearings, nothing else damaged in the transmission?
There were hardly any lubrication in the tranny.
Must have been an amateur tech working in this car before?
That’s what I’m thinking, or the guy got scammed - either way, ridiculous.

I paid about $490 after tax, assuming a couple hours for labor, then parts and liquids. Seems like a good price to me.
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Old Apr 28, 2022 | 02:24 PM
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C43 AMG with a tune up
If tranny is low on fluid there is no drive to move the car forward.
You must have had a very low fluid level?

Regarding bearings, do you know what bearings were replaced?
98 cars had weak bearings made of brass, they did break and blew up the tranny.
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Old Apr 28, 2022 | 03:47 PM
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Originally Posted by MattCordell
If tranny is low on fluid there is no drive to move the car forward.
It's funny you mention that, when I was taking it to the shop it got extremely sketchy. The car would have a really hard time getting into first gear. I'm not sure what bearings were replaced.
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Old May 4, 2022 | 08:57 AM
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1998 C43 w/ 55 swap Wavetrac LSD and 6-Speed manual
I'm hoping to do my manual swap this summer - will have a very good condition slushbox available in Chicago if you have any other problems. Can see/drive the car before removal.
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