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#1
03-03-2011, 08:09 AM
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Camshaft position sensor, 103 engine
This is NOT about the crankshaft position sensor that originates at the bell housing
The other day, copper shavings were being produced underneath the part that sits TDC on the engine..... now the engine is idling rough. I just replaced my fan bearing bracket....as it was going.... i think the bad bracket...might have had an effect on this part. What specifically does the camshaft position sensor do... or is it called the crankshaft position sensor for the front of the engine?
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1989 300ce 129k ( facelifted front,updated tail lights, lowered suspension,bilstein sports, lorinser front spoiler, MOMO steering wheel, remus exhaust,stainless steel brake lines). (Gone) 1997 s320 154k (what a ride). Sold with 179k miles. Replaced with Hyundai Equus 1994 e320 Cabriolet 108k  1972 280se 4.5 153k Owned for 12 yrs, sorry I sold it [/SIGPIC] 
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#2
03-03-2011, 08:17 AM
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That sensor has Nothing to do with the running or operation of the engine systems.
MB installed that sensor as a reference for the "factory" scope that we used back in the day.
__________________
MERCEDES Benz Master Guild Technician (6 TIMES) ASE Master Technician Mercedes Benz Star Technician (2 times) 44 years foreign automotive repair 27 Years M.B. Shop foreman (dealer) MB technical information Specialist (15 years) 190E 2.3 16V ITS SCCA race car (sold) 1986 190E 2.3 16V 2.5 (sold) Retired Moderator
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#3
03-03-2011, 09:46 AM
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That sensor is used for the cluster only. It has no influence in the ECU or KE-Jetronic system.
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2016 Monsoon Gray Audi Allroad - 21k 2008 Black Mercedes E350 4Matic Sport - 131k 2014 Jeep Wranger Unlimited Sahara - 62k 2003 Gray Mercedes ML350 - 122k
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#4
03-03-2011, 11:07 AM
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oh boy... i may be back to square 1. I will go to the boneyard and get the camshaft sensor...
i have a water pump on order. i should say that the engine runs smoothly with the belt off and no pulleys turning....
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1989 300ce 129k ( facelifted front,updated tail lights, lowered suspension,bilstein sports, lorinser front spoiler, MOMO steering wheel, remus exhaust,stainless steel brake lines). (Gone) 1997 s320 154k (what a ride). Sold with 179k miles. Replaced with Hyundai Equus 1994 e320 Cabriolet 108k 1972 280se 4.5 153k Owned for 12 yrs, sorry I sold it [/SIGPIC]
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#5
03-03-2011, 11:50 AM
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YOU do NOT need to replace that TDC sensor on the front of the damper!
Take it off & throw it away. It does nothing!
__________________
MERCEDES Benz Master Guild Technician (6 TIMES) ASE Master Technician Mercedes Benz Star Technician (2 times) 44 years foreign automotive repair 27 Years M.B. Shop foreman (dealer) MB technical information Specialist (15 years) 190E 2.3 16V ITS SCCA race car (sold) 1986 190E 2.3 16V 2.5 (sold) Retired Moderator
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#6
03-03-2011, 12:16 PM
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Quote:
I wish I was closer to Atlanta, I would stop in for a diagnosis to this problem
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1989 300ce 129k ( facelifted front,updated tail lights, lowered suspension,bilstein sports, lorinser front spoiler, MOMO steering wheel, remus exhaust,stainless steel brake lines). (Gone) 1997 s320 154k (what a ride). Sold with 179k miles. Replaced with Hyundai Equus 1994 e320 Cabriolet 108k 1972 280se 4.5 153k Owned for 12 yrs, sorry I sold it [/SIGPIC]
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#7
03-03-2011, 02:30 PM
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He did not literally mean take it off.....Leave it alone.
Your rough idle has nothing to do with the water pump. If the pump bearing is noisy, replace it, but that's it. Rough idle is spark or fuel.
__________________
2016 Monsoon Gray Audi Allroad - 21k 2008 Black Mercedes E350 4Matic Sport - 131k 2014 Jeep Wranger Unlimited Sahara - 62k 2003 Gray Mercedes ML350 - 122k
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#8
03-03-2011, 03:32 PM
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the water pump is on order,i'll keep my fingers crossed
__________________
1989 300ce 129k ( facelifted front,updated tail lights, lowered suspension,bilstein sports, lorinser front spoiler, MOMO steering wheel, remus exhaust,stainless steel brake lines). (Gone) 1997 s320 154k (what a ride). Sold with 179k miles. Replaced with Hyundai Equus 1994 e320 Cabriolet 108k 1972 280se 4.5 153k Owned for 12 yrs, sorry I sold it [/SIGPIC]
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#9
03-03-2011, 06:12 PM
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Quote:
__________________
1988 California version 260E (W124) Anthracite Grey/Palomino Owned since new and still going strong and smooth MBCA member Past Mercedes-Benz: 1986 190E Baby Benz 1967 230 Inherited from mom when she downsized 1959 220S Introduced me to the joys of keepin' 'em goin' There are only 10 kinds of people in the world--those who understand binary and those who don't
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#10
03-03-2011, 06:33 PM
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Can't track down a vacuum problem....maybe i should re-phrase.... perhaps the idle is just fine.... but the engine is just vibrating more than it should..... idle doesn't fluctuate.
starts right up..... motor mount have been replaced... ...and like i said...with the belt off, all seems pretty decent
__________________
1989 300ce 129k ( facelifted front,updated tail lights, lowered suspension,bilstein sports, lorinser front spoiler, MOMO steering wheel, remus exhaust,stainless steel brake lines). (Gone) 1997 s320 154k (what a ride). Sold with 179k miles. Replaced with Hyundai Equus 1994 e320 Cabriolet 108k 1972 280se 4.5 153k Owned for 12 yrs, sorry I sold it [/SIGPIC]
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#11
03-03-2011, 07:12 PM
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Lee
a pulley must be out of synch with the rest try and look for a wobbling pulley with the belt on or remove the belt and rotate pulleys by hand to feel for binding, most likely it's one you were working on Paul
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#12
03-03-2011, 09:14 PM
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Quote:
i am thinking about going to the boneyard..and picking up a couple of pulleys...
__________________
1989 300ce 129k ( facelifted front,updated tail lights, lowered suspension,bilstein sports, lorinser front spoiler, MOMO steering wheel, remus exhaust,stainless steel brake lines). (Gone) 1997 s320 154k (what a ride). Sold with 179k miles. Replaced with Hyundai Equus 1994 e320 Cabriolet 108k 1972 280se 4.5 153k Owned for 12 yrs, sorry I sold it [/SIGPIC]
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#13
03-04-2011, 02:01 AM
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Mine is doing the same thing...I noticed it is the waterpump pulley as the bearing seems to be going out. It has about 1.5 mm play in it and prior to that, the engine did not make a rattling sound. Got one coming tomorrow but it is a workout to change.
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#14
03-04-2011, 10:01 PM
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Quote:
this will be my third 103 pump....and they don't get any easier. ********just to clarify******** this will be my third 103 pump on THREE different 103's********
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1989 300ce 129k ( facelifted front,updated tail lights, lowered suspension,bilstein sports, lorinser front spoiler, MOMO steering wheel, remus exhaust,stainless steel brake lines). (Gone) 1997 s320 154k (what a ride). Sold with 179k miles. Replaced with Hyundai Equus 1994 e320 Cabriolet 108k 1972 280se 4.5 153k Owned for 12 yrs, sorry I sold it [/SIGPIC] Last edited by lee polowczuk; 03-05-2011 at 10:14 AM.
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