Hey everyone. I just tried this idea on fixing my tach which was not working most of the time. The idea worked great and I'd like to share with everyone here. What I did was this. Unscrew and remove the tach control thing on the driver inside fender. It's got 6 pins that are used. Take little bits of tin foil "about 1/4 inch squares", roll them up and push one rolled up bit in each hole that a pin will go in. Re-install the thing and ta-da. The tach works great!! Doesn't get any easier then that.

You could also disassemble the socket, and squeeze the connector "sockets" slightly, increasing their contact with the amplifier's pins. The sockets are slotted and smaller in diameter than the pins of the amplifier to create a good connection, over time because of the slots they expand (thus loose).

I hate to burst your bubble, but you're just doing a variation of a trick that's been used for nearly 30 years with the same result. It'll fail in a little while.

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'81 MB 300SD, '82 MB 300D Turbo (sold/RIP), '04 Lincoln Town Car Ultimate

Sooner or later every car falls apart, ours does it later!
-German Narrator in a MB Promotion Film about the then brand new W123.

I did that but only lasted 2 days.
The main problem is,the wire from the sender on crankshaft.Is old and not long enough.As the vehicle ages the insulation shrinks.What I did was make sure there was slack in that wire going to socket where the Amp screws onto.What happens is the socket pulls away from the amp.
So I used a little super glue gel pulled socket down a little,few drops super glue on socket base.And pushed socket up and held it with channel locks 5 mins.
Now when you screw amp back on,the socket won't be pushed down.

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1999 w140, quit voting to old, and to old to fight, a god damned veteran

The foil use is also an old blown fuse temp repair. Just wrap a blown fuse in foil & put it in, gets you going until you can get a replacement. Need to be careful as it takes a fair few amps to blow it. A bit like regular copper wire in a house hold fuse box!! Great if you are welding!!
Now I bet every one will leave a post that its dangerous. I think if it gets you off the side of the road & home its ok.

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Grumpy Old Diesel Owners Club group

I no longer question authority, I annoy authority. More effect, less effort....

1967 230-6 auto parts car. rust bucket.
1980 300D now parts car 800k miles
1984 300D 500k miles
1987 250td 160k miles English import
2001 jeep turbo diesel 130k miles
1998 jeep tdi ~ followed me home. Needs a turbo.
1968 Ford F750 truck. 6-354 diesel conversion.
Other toys ~J.D.,Cat & GM ~ mainly earth moving

300CDMan,

Good deal with your fix, but as stated it might be short lasted. Until it goes south you might look for a replacement trash can amp. That was what was bad on mine. Been working fine since replacem't.
So how is your obdometer, instrument lights, HVAC, and other things working, as you will have more challenges coming up...

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Gary
Experience is something you get, Just after you needed it....
'99 E300 295K, '83 300D 220K, '75 240D 185K sold
'80 MCI Bus Conv DD 6V92TA, w/4 cyl. Kubota diesel GenSet 12.5KW

I have done only two and in both I found that there were cold solder joints on the board. The closing of the socket pushes the board up for a while till it loses contact on the board again. The biggest problem is the time it takes to remove the silicone or rubber like sealer that protects the board. Two hours to clean and ten minutes to fix. I thought that I would be smart and use paint remover to get the stuff off and it dissolved the components on the board, what a bummer. I now drink beer and use a dental pick to remove the stuff carefully.

Robert

Contact Techguy, he has what you need.

http://www.peachparts.com/shopforum/showthread.php?t=219949

Charlie

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there were three HP ratings on the OM616...

1) Not much power
2) Even less power
3) Not nearly enough power!! 240D w/auto

Anyone that thinks a 240D is slow drives too fast.

80 240D Naturally Exasperated, 4-Spd 388k DD 150mph spedo 3:58 Diff

We are advised to NOT judge ALL Muslims by the actions of a few lunatics, but we are encouraged to judge ALL gun owners by the actions of a few lunatics. Funny how that works

THAT is some excellent information. Not only the thread indicated, but the thread inside that one.
Its too cold to work outside right now ( 17 degrees F), but this is definitely on the "ToDo" list.

Thanks!!!

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1982 300SD " Wotan" ..On the road as of Jan 8, 2007 with Historic Tags