I removed the front crank sensor to change the water pump.
I noticed the bracket has slotted holes that allow a few degrees of adjustmenton the sensor, maybe 3-4 crank degrees. Is this critical to final spark timing, or does this sensor just do a rough reference to aid startup?

DG

I believe that sensor is for the tachometer. The crank position sensor is on the back of the block. Maybe someone else can verify this.

The front sensor is for the tach, I am quite sure. The computer reads from a sensor at the rear.

__________________
-diesel is not just a fuel, its a way of life-
'15 GLK250 Bluetec 118k - mine - (OC-123,800)
'17 Metris(VITO!) - 37k - wifes (OC-41k)
'09 Sprinter 3500 Winnebago View - 62k (OC - 67k)
'13 ML350 Bluetec - 95k - dad's (OC-98k)
'01 SL500 - 103k(km) - dad's (OC-110,000km)
'16 E400 4matic Sedan - 148k - Brothers (OC-155k)

Yeah, the top nut should be loosened to remove the sensor and leave the rest of the threaded post on the bracket.

These are usually rusted pretty good and need to be hit with some PB blaster a few times before removal.

Sometimes the top nut will not unscrew but the whole post will want to come off which is usually the case. Doh!

Cam postion sensor at front, crank position sensor at rear.

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Kent Christensen
Albuquerque
'07 GL320CDI, '10 CL550. '01 Porsche Boxster
Two BMW motorcycles

All the cars crank inputs come from the rear sensor. The one on the front was designed for external testing and plays no part in the operating systems.

__________________
Steve Brotherton
Continental Imports
Gainesville FL
Bosch Master, ASE Master, L1
33 years MB technician

second that, it does not play a part in the car actually running, now for the older diesels it was for the tach. the car will run just fine even with it removed

__________________
1967 250 S
1967 280SE
1968 250S
1971 280 SE
1973 220
1974 280 S
1975 450 SEL
1976 220 D
1979 300SD
1983 300 SD
1985 230 TE euro
1986 280SL
1986 500 SEL euro
1986 190E 2.3
1990 300 SE
2003 C230 K
2004 C230 K
1987 560SEL
1987 300SDL now in canada
2005 C230
1998 C43 AMG Sold to DON
1993 190E 2.6
300TD Former daily driver Totaled
current:
R320 CDI
Ram 2500 Cummins

Right on (Steve) Bro!

__________________
Regards

Warren

Currently 1965 220Sb, 2002 FORD Crown Vic Police Interceptor

Had 1965 220SEb, 1967 230S, 280SE 4.5, 300SE (W126), 420SEL

ENTER > = (HP RPN)

Not part of the in-crowd since 1952.

Thanks guys. Now if I could just find a way to route the cable back behind the installed new water pump, as it's supposed to go, I'd be in great shape!

(Actually, I was able to unplug the other end and snake it around - I love getting old and dangerous!)

DG

As I was looking at the power steering return hose on my 1990 300e 2.6 , I noticed the other end of this wire from this sensor lying loose on the inner fender. Where is the connector that it should be connected to located?
Dan

The wires inside the coax go to pins 7 and 8 and the shield goes to pin 9 on the X11 diagnostic connector. It serves no purpose than to signal cyl 1 TDC for some Bosch disgnostic equipment.

__________________
Regards

Warren

Currently 1965 220Sb, 2002 FORD Crown Vic Police Interceptor

Had 1965 220SEb, 1967 230S, 280SE 4.5, 300SE (W126), 420SEL

ENTER > = (HP RPN)

Not part of the in-crowd since 1952.