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  #1  
Old 08-28-2012, 12:28 PM
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Transmission messed up need help 1998 E320 W210

While I was out of town the transmission has seemed to fail on my wife's 1998 e320.

She told me that when she was driving the car starting to make a banging noise at the transmission. She pulled over and turned off the car. She later turned it back on and couldn't get the car to go into drive. She messed around a little bit then found that the if she shifted into neutral that the car actually was going into drive. Instead of driving it she had her father town it home for her.

When I got home I tried to figure out the problem. When the car is in park after starting it up everything sounds normal for about 1 minute. After about 1 minute the car while make a bang or clunk noise like it is trying to go into gear. When I shift into drive it doesn't seem to do this. I also notice that switching the car to W instead of S makes a difference. When I switch the car into W the car makes a whirring noise. It is like a rolling noise sort of like a bad wheel bearing.

Anyway I don't want to try and drive it to help the diagnosis unless someone thinks it would be okay to try. I am currently working from home since we are short a vehicle so I need to get this figured out asap. I am beginning to wonder if it is a complete transmission failure.


So after listening to it a little bit more, it sounds like a rolling noise that rattles too. I imagine it as to moving pieces of metal barely touching while they rotate.

Thanks in advance

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1998 E320 150,000
1980 300SD 240,000
1965 190D 79,000

Last edited by nckmsn; 08-28-2012 at 01:38 PM. Reason: different sound
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  #2  
Old 08-28-2012, 01:36 PM
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Your safest bet would be to have the car inspected on a hoist(for linkage issues) and have the transmission codes read via SDS. Unless you know exactly what is wrong, driving it could be dangerous. In any event, if the transmission has totally failed, you are looking at $4-$5K and maybe the car isn't worth that much.

Have to ask - Has anyone spilled any liquids on the center console? That often causes the kind of irregular operation you describe.
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1998 E320 Wagon
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Old 08-28-2012, 02:27 PM
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Quote:
Originally Posted by RichardM98 View Post
Your safest bet would be to have the car inspected on a hoist(for linkage issues) and have the transmission codes read via SDS. Unless you know exactly what is wrong, driving it could be dangerous. In any event, if the transmission has totally failed, you are looking at $4-$5K and maybe the car isn't worth that much.

Have to ask - Has anyone spilled any liquids on the center console? That often causes the kind of irregular operation you describe.
there is a possibility that something was spilled. From what I have read, that just puts the car in limp mode. I haven't seen any reports of rolling light grinding noise at idle. it acts like it tries to engage while in neutral and park with a clunk noise then goes back to the rolling grinding noise at idle. Does this sometimes happen? Should I take the center console apart?
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1998 E320 150,000
1980 300SD 240,000
1965 190D 79,000
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Old 08-28-2012, 02:59 PM
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You are sure it is the transmisson is it a possibility that the problem is drive-shaft.
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  #5  
Old 08-28-2012, 04:55 PM
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I am pretty sure that this is a transmission problem and not the drive shaft, but i guess it could be anything.

Update

There is oil at the TCM.


Is there anything else i can do other than replacing parts at this time?

Could I run the car without the TCM hooked up to see if the grinding goes away at idle?
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1998 E320 150,000
1980 300SD 240,000
1965 190D 79,000
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Old 08-28-2012, 05:45 PM
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Location: Soperton, Ga. USA
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How many miles are on the car? First thing I'd try to look at would be the flex disc and rear transmission mount. Next would be to drop the pan on the transmission and see what it looks like in there. When was the last time the transmission was serviced?
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Old 08-28-2012, 07:27 PM
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Originally Posted by engatwork View Post
How many miles are on the car? First thing I'd try to look at would be the flex disc and rear transmission mount. Next would be to drop the pan on the transmission and see what it looks like in there. When was the last time the transmission was serviced?
It has 200k plus miles and was services about 30k mile ago.

I think the problem is in the transmission itself. right after the failure began, my wife had to shift it into neutral to to get it into drive, then it was very hard to find the real neutral to tow. I don't think that would be a result of the flex disc. Please correct me if I am wrong since these are just my thoughts.

thanks for the help
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1998 E320 150,000
1980 300SD 240,000
1965 190D 79,000
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  #8  
Old 08-29-2012, 11:36 AM
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Location: El Dorado Hills, CA, USA
Posts: 418
Nck..

NoT sure if you reside in the USA?

If you are in the USA, check the error codes through OBDII port, and check it through the port under the hood. Check the transmission adaptation levels, get all the error codes.

For kicks, look under the car for the drive-shaft issues, but I do not think you will not see anything abnormal. Check both flex disks...

You may have multiple issues:

My guess, The transmission lost the oil pressure regulating solenoid(or o-ring with it. The screen is plugged up). The transmission lost it's core fluid flow into the galleries. Overheated the bearing/bushing in the torque converter turbine, and possibly damaged the weak K2 bearing which will damage your planetary gears. The banging is coming from the torque converter impeller floating around. The whine from the planetary or oil pump gears.

One more thing, you could have a transmission oil filter collapse or damage
Make sure your fluid and filter is current!! Up to level.

Get your self a Mercedes 722.6 transmission dip stick measuring tool for a piece-of-mind.

hope this helps,

Martin

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