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190d Transmission Problem

Hi,

I have a 1990 190d 2.5 auto and it seems to have a slight problem with transmission.

I have looked on this forum and see that I am not the only one who has experienced this so hopefully you guys can help!

Basically when I come to a halt, the car seems to kickdown into 1st and remains in that gear until 4000 revs or so before shifting. It also feels like it might be missing 2nd out and going straight to 3rd. This is regardless of how much pressure I am applying to the gas pedal. I expect it to pull away in 2nd when not rushing. This seems to be an fault and two garages have driven it and said there is no problem.

I have had tranny fluid changed (inc did torque converter) by local transmission specialist.

The car shifts better but still does has this annoying kickdown problem. Otherwise, car shifts great and runs very nicely. Will the car revving in 1st be ruining my fuel economy?

Any ideas to what could be causing this? I've read it could be a vacuum problem, the linkage or a sticking kickdown switch. Can this switch be replaced easily? I have tried adjusting the throttle linkage that connects to kickdown cable but this didn't help so have put it back to original position.

Any help much appreciated!

Paul

Reply to
south
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You need a new tranny...I know this because I had the exact problem

Reply to
Tiger

hi tiger,

how much was a replacement?

I am gutted having payed the =A3120 for fluid change. :-( sometimes, on inclines when it should kickdown it just revs as if it is slipping. did you get this too?

cheers

paul

Reply to
south

You might inspect the vacuum hoses at the mechanical fuel injection pump. It seems to me this car may have vacuum controls that effect the governor pressue inside this transmission. You can check for loose vacuum hoses at and around the mechanical fuel injection pump on the left side of the engine. Find a Mercedes Mechanic who is familiar with the transmission controls and operations.

Reply to
mdsimon80

You are in UK... don't know price there... we can get rebuilt unit for about $1000 US plus labor to install. Slipping is sure sign of wear.

Reply to
Tiger

There was a leaking seal on one of the fuel lines coming from the pump which I had repaired when my fuel line developed a leak at the injector end.

The hoses seem tight, however, at the end of the lever (spring loaded) that links the pump to throttle linkage there seems to be a ball joint which has nothing on it - and shiny as if something has popped off. This is inline with one of those hoses. Do they need to be connected? Sorry if I have given a bad description!

Reply to
south

I don't think that a hose would connect to a ball joint. Probably a cable of some sort should connect or pop onto that ball.

Look carefully at that "hose"? Is it really a hose, or perhaps it's the casing of a cable that is broken?

Marty

Reply to
Martin Joseph

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