STD Maintenance General OM617 w MW. pump. No part throttle.

OM617 w MW. pump. No part throttle.

OM617 w MW. pump. No part throttle.

 
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rolfi
My 300D is Onion-yellow!

79
05-19-2011, 06:05 AM #1
Hello.

I have somewhat of a problem with my car.

When I press the throttle pedal around a cm, the car slowly moves forward. After that, nothing happens before it's almost floored. So I have a huge dead spot on part throttle.

Does anyone know what might be wrong?

-rolfi

1980 Mercedes-Benz 300D (US-spec)
+BMW E12, E21, E28, E30 and E32
rolfi
05-19-2011, 06:05 AM #1

Hello.

I have somewhat of a problem with my car.

When I press the throttle pedal around a cm, the car slowly moves forward. After that, nothing happens before it's almost floored. So I have a huge dead spot on part throttle.

Does anyone know what might be wrong?


-rolfi

1980 Mercedes-Benz 300D (US-spec)
+BMW E12, E21, E28, E30 and E32

aaa
GT2256V

913
05-19-2011, 07:45 PM #2
What's it do in neutral? Can you watch what the linkage does with someone else pushing the pedal?
aaa
05-19-2011, 07:45 PM #2

What's it do in neutral? Can you watch what the linkage does with someone else pushing the pedal?

dieselboy
Rotatin 5500 times a minute

680
05-19-2011, 11:31 PM #3
Look at the linkage by the stop button. there is a rubber piece in there that break and also at the firewall there is another rubber piece that breaks and doesn't allow the throttle linkage to move fully.

-Jesse

80 300sd hy35, front mount intercooler, w115 intake, rack limiter removed, Alda removed, full load turned up, boost, ebp, trans, pyro, egr delete, 3.5" exhaust, e-fan, 16x8 rims with, 245/50 tires, lowered, bilstien 5100's, 12" front brakes, 2.65:1 diff.
97 f250 psd 4x4, crawler
70 f250 390
83 Volvo 242, lots of mods
66 Volvo amazon

10 mistsubishi fuso service truck.
dieselboy
05-19-2011, 11:31 PM #3

Look at the linkage by the stop button. there is a rubber piece in there that break and also at the firewall there is another rubber piece that breaks and doesn't allow the throttle linkage to move fully.


-Jesse

80 300sd hy35, front mount intercooler, w115 intake, rack limiter removed, Alda removed, full load turned up, boost, ebp, trans, pyro, egr delete, 3.5" exhaust, e-fan, 16x8 rims with, 245/50 tires, lowered, bilstien 5100's, 12" front brakes, 2.65:1 diff.
97 f250 psd 4x4, crawler
70 f250 390
83 Volvo 242, lots of mods
66 Volvo amazon

10 mistsubishi fuso service truck.

rolfi
My 300D is Onion-yellow!

79
05-20-2011, 05:42 AM #4
In N and P it's the same. It revs like normal if I don't push the pedal more than 1cm. After that cm, nothing happens before it's almost floored. I have a feeling it's easier to push it where the dead spot is, but that might as well be something I think I feel, because of how it reacts. Two friends plus myself have looked at the linkage when the pedal is being pushed, but everything looks normal... I'll try to research some more this weekend.
The whole linkage looks like a huge chaos for me, as I'm used to gasoline engines where there is either a single throttle-cable or a electronic motor controlling the opening of the throttle-plate...

But when 1 US gallon costs ~$10 here (Norway), I'd rather save some money with a diesel, and at the same time learn something new Smile

-rolfi

1980 Mercedes-Benz 300D (US-spec)
+BMW E12, E21, E28, E30 and E32
rolfi
05-20-2011, 05:42 AM #4

In N and P it's the same. It revs like normal if I don't push the pedal more than 1cm. After that cm, nothing happens before it's almost floored. I have a feeling it's easier to push it where the dead spot is, but that might as well be something I think I feel, because of how it reacts. Two friends plus myself have looked at the linkage when the pedal is being pushed, but everything looks normal... I'll try to research some more this weekend.
The whole linkage looks like a huge chaos for me, as I'm used to gasoline engines where there is either a single throttle-cable or a electronic motor controlling the opening of the throttle-plate...

But when 1 US gallon costs ~$10 here (Norway), I'd rather save some money with a diesel, and at the same time learn something new Smile


-rolfi

1980 Mercedes-Benz 300D (US-spec)
+BMW E12, E21, E28, E30 and E32

300D50
Graphite Moderator, ala RBMK

775
05-20-2011, 04:35 PM #5
Try pulling on the stop lever, and see if the same problem shows.
That neatly bypassess the linkage and will tell you if there's a problem there or not.

1990 Power Ram 50 V6 SOHC 24V 6g72

I can be wrong, don't take everything I say as verbatim, please fact-check first.
My posts are my personal opinions and thoughts, unless otherwise noted.
300D50
05-20-2011, 04:35 PM #5

Try pulling on the stop lever, and see if the same problem shows.
That neatly bypassess the linkage and will tell you if there's a problem there or not.


1990 Power Ram 50 V6 SOHC 24V 6g72

I can be wrong, don't take everything I say as verbatim, please fact-check first.
My posts are my personal opinions and thoughts, unless otherwise noted.

rolfi
My 300D is Onion-yellow!

79
05-22-2011, 04:31 PM #6
Here is a video of the problem.

http://www.youtube.com/watch?v=avfXYts0590


Thanks a lot for the help I've gotten so far!

-rolfi

1980 Mercedes-Benz 300D (US-spec)
+BMW E12, E21, E28, E30 and E32
rolfi
05-22-2011, 04:31 PM #6

Here is a video of the problem.

http://www.youtube.com/watch?v=avfXYts0590


Thanks a lot for the help I've gotten so far!


-rolfi

1980 Mercedes-Benz 300D (US-spec)
+BMW E12, E21, E28, E30 and E32

winmutt
bitbanger

3,468
05-26-2011, 08:07 AM #7
The FSM has all the correct measurements for the linkage. Watch the linkage on the engine side of the IP about half way down the IP. There is a hammer that hits max stop. Back track the action from there and see where the slop is.

1987 300D Sturmmachine
1991 300D Nearly Perfect
1985 300D Weekend/Camping/Dog car
1974 L508D Motoroam Monarch "NightMare"
OBK #42
winmutt
05-26-2011, 08:07 AM #7

The FSM has all the correct measurements for the linkage. Watch the linkage on the engine side of the IP about half way down the IP. There is a hammer that hits max stop. Back track the action from there and see where the slop is.


1987 300D Sturmmachine
1991 300D Nearly Perfect
1985 300D Weekend/Camping/Dog car
1974 L508D Motoroam Monarch "NightMare"
OBK #42

rolfi
My 300D is Onion-yellow!

79
06-01-2011, 09:55 PM #8
(05-26-2011, 08:07 AM)winmutt The FSM has all the correct measurements for the linkage. Watch the linkage on the engine side of the IP about half way down the IP. There is a hammer that hits max stop. Back track the action from there and see where the slop is.

Thank you.
I've decided to replace my engine. I just hope that the forest-pump is better than this MW-pump.

-rolfi

1980 Mercedes-Benz 300D (US-spec)
+BMW E12, E21, E28, E30 and E32
rolfi
06-01-2011, 09:55 PM #8

(05-26-2011, 08:07 AM)winmutt The FSM has all the correct measurements for the linkage. Watch the linkage on the engine side of the IP about half way down the IP. There is a hammer that hits max stop. Back track the action from there and see where the slop is.

Thank you.
I've decided to replace my engine. I just hope that the forest-pump is better than this MW-pump.


-rolfi

1980 Mercedes-Benz 300D (US-spec)
+BMW E12, E21, E28, E30 and E32

 
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