grober
MB Master
Did you mean to post this on the fuel pump relays thread Malcolm or are you saying this is an potential cause of the driving hesitancy issue?
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m104 twin-cam takeover/timing
- Thread starter aka$h
- Start date
television
Hardcore MB Enthusiast
No I put it here just in case KE used the same thing on the box. I have done a lot of reading up for crammy and came across it
I have a M104 in my 1996 C36. It is running perfectly (touch wood!).
With the car stationary, it is not possible to exceed 4000 RPM in P, N or D. When the car is moving at say 10 km/h or faster, the engine will rev all the way to the red-line (6400 or so). I believe that this is as designed and is normal.
It would appear that the EMU needs a VSS signal to allow full RPM. Possible problem area?
Secondly, if you suspect a cam sensor problem, disconnect the cam sensor cable and try a run. If there is no change, you might have hit the problem.
Thirdly, I recently had a problem with my 2000 CLK320 M112 engine. It lost significant power above 4000 RPM and accelerated very very very slowly towards max RPM. Cleaning the MAF improved performance a bit. Replacing the MAF restored heroic performance to as new condition!
With the car stationary, it is not possible to exceed 4000 RPM in P, N or D. When the car is moving at say 10 km/h or faster, the engine will rev all the way to the red-line (6400 or so). I believe that this is as designed and is normal.
It would appear that the EMU needs a VSS signal to allow full RPM. Possible problem area?
Secondly, if you suspect a cam sensor problem, disconnect the cam sensor cable and try a run. If there is no change, you might have hit the problem.
Thirdly, I recently had a problem with my 2000 CLK320 M112 engine. It lost significant power above 4000 RPM and accelerated very very very slowly towards max RPM. Cleaning the MAF improved performance a bit. Replacing the MAF restored heroic performance to as new condition!
kth286
MB Enthusiast
Just in case the above posts have caused any confusion the 3.2 and 2.8 104 engines had BOTH variable valve timing AND variable length inlet manifold via flap switching.
The above may not change at same time, I've not checked.
The above may not change at same time, I've not checked.
