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  #1  
Old 09-02-2009, 04:46 PM
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Dismantling Throttle switch M117

I found the pictures that barri posted with his TPS in pieces. But, I am a bit afraid to start prying mine apart. The plastic is 37 years old and seems brittle. Any tricks that might help?\

ADDED: Not to worry - I got it done.

Made up a pdf of sequence. Here is a link:

http://home.cogeco.ca/~mbz/Adjusting and Cleaning TPS on R107 Mercedes.pdf

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85 300D,72 350SL, 98 E320, Outback 2.5

Last edited by Graham; 09-02-2009 at 11:51 PM.
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Old 09-02-2009, 11:54 PM
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Edited above post to reflect what I did today
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Old 09-03-2009, 07:02 PM
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nice work and write up , did it help? DO you think this was the first time serviced, looked clean??
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2011 Porsche Cayman - Bond,James Bond
Sadly MERCEDESLESS - ALways LOOKING !
99 E320 THE Queen Mary - SOLD
62 220b - Dolly - Finally my Finny! Sadly SOLD
72 450SL, Pearl-SOLD
16 F350 6.7 Diesel -THOR
19 BMW X5 - Heaven on Wheels
14 38HP John Deere 3038E Tractor -Mean Green
84 300SD, Benjamin -SOLD
71 220 - W115-Libby ( my first love) -SOLD
73 280 - W114 "Organspende" Rest in Peace
81 380 SL - Rest in Peace
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Old 09-03-2009, 10:16 PM
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Quote:
Originally Posted by meltedpanda View Post
nice work and write up , did it help? DO you think this was the first time serviced, looked clean??
It was not bad. Looked quite clean except for skid marks across zig-zag contacts.

Did it help? Well, Hard to say! I did start engine this evening but it ran just awfully! I had vacuum gauge attached. With throttle plate closed, I had ZERO vacuum! Had to shut down because we were going out for dinner.

Over dinner friend said it just could not have ZERO vacuum. Well he was of course right. Came home and tried to blow through port that feeds vacuum to distributor. It is blocked!

I looked on inside of throttle body but did not see any opening. Looking for drawing or advice on how to get it cleared!
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Old 09-07-2009, 08:51 PM
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did you get that sorted out?
I can look on mine if you would like
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Ron
2011 Porsche Cayman - Bond,James Bond
Sadly MERCEDESLESS - ALways LOOKING !
99 E320 THE Queen Mary - SOLD
62 220b - Dolly - Finally my Finny! Sadly SOLD
72 450SL, Pearl-SOLD
16 F350 6.7 Diesel -THOR
19 BMW X5 - Heaven on Wheels
14 38HP John Deere 3038E Tractor -Mean Green
84 300SD, Benjamin -SOLD
71 220 - W115-Libby ( my first love) -SOLD
73 280 - W114 "Organspende" Rest in Peace
81 380 SL - Rest in Peace
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  #6  
Old 09-07-2009, 09:34 PM
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Quote:
Originally Posted by meltedpanda View Post
did you get that sorted out?
I can look on mine if you would like
I found the throttle body port was plugged. I cleared it by pushing a thin wire through the port and then flushing with solvent. I now get a vacuum reading!

But as outlined in my other post, my problems are far from over!

Sounds like I do need to do the intake donuts, but not sure if that is the main problem or not.

I would be interested to know if other D-Jet SLs have black deposits on the inside of the throttle body below the throttle plate. It was those deposits that blocked the vacuum port.

The other thing I would be interested in, is the position of the vacuum port when the throttle is closed. I thought it should be just below the plate, but on my car it is essentially blocking the port. But not so much that it won't pull a vacuum. I tried to adjust the stop, but it's awkward to do, so gave up for the night!
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Old 09-08-2009, 12:08 PM
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mine does not have black soot, and mine ( vacuum port) is definitely below the plate
Sounds like it may be part of your issue!
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Ron
2011 Porsche Cayman - Bond,James Bond
Sadly MERCEDESLESS - ALways LOOKING !
99 E320 THE Queen Mary - SOLD
62 220b - Dolly - Finally my Finny! Sadly SOLD
72 450SL, Pearl-SOLD
16 F350 6.7 Diesel -THOR
19 BMW X5 - Heaven on Wheels
14 38HP John Deere 3038E Tractor -Mean Green
84 300SD, Benjamin -SOLD
71 220 - W115-Libby ( my first love) -SOLD
73 280 - W114 "Organspende" Rest in Peace
81 380 SL - Rest in Peace
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  #8  
Old 09-08-2009, 12:21 PM
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Quote:
Originally Posted by meltedpanda View Post
mine does not have black soot, and mine ( vacuum port) is definitely below the plate
Sounds like it may be part of your issue!

Thanks for checking!

Today I measured 16.5" vac - lower than it used to be. But I guess the throttle plate must be closed otherwise I wouldn't even get that.

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85 300D,72 350SL, 98 E320, Outback 2.5
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