W202 1994 C280

Brabus 3.6-24

Active Member
Joined
Aug 31, 2006
Messages
25
Reaction score
1
Location
Denmark
I've got a C280 with ASR from 1994
New installed Delfi engine wireharness a decade ago.

The error I see is very odd.
Car starts ok and idles ok. But when ever you go past 3500 rpm. It hits the limiter just like when your parked in P or N and rev the engine it's limited to 3500 rpm. This continues under driving.
Another problem is if you move the throttle past 50% the engine is killed. The Rev counter drops to 0 even before the engine is dead.
And at the same time the fully automatic AC is flikkering/changing settings.
After this happens, the engine can't be started for the next 1-10 minuts. It's very difrent how long that period of time is.
So more than 50% throttle it's killed and if your lucky and remove the foot from the throttle as quick as it hits the dead point. It sometimes will not go dead even though the engine revs were on the way down it somehow. Catches back to life before it hits 0 rpm.

The error code thrown to the 38 pole round connector is as follow. These can be erased again but will pup up again if the more than 50% throttle position is done again.

Pin 6 ABS/ASR i think.

Code 30 can bus data line to CC/ASR/Idle controle module.
Code 31. Can bus data to LH-SFi module.


Pin 7 EA/CC/ISC with ASR I think.

Code 11
Closed throttle regognition signal to engine controle module HFM-SFI/LH-SFi
Fuel safety shut off to engine controle module HFM-SFI

I've measured the throttle switch S29/3 inside the throttle pedal.
Idle position
spec: 900-1100 Ohms. measured = 960 Ohm
Pushed passed idle position
Spec: >20K Ohms. Measured = no Ohms. Open circuit.

At ignition 4.99 Volt. Ok.
At movement 1.2 Volt. Ok.

All the controle boxes with throttle body, has been tried changed from another car identical to this one. But same problems is there in this car and all the boxes nd throttle body worked with no problems in the other car.

So I'm i looking for some canbus wires between the boxes that are broken?
Help is much apriciated.
29a6675b6fc75ff235af03dd361d00a2.jpg
a9aaa05416e8df0b64943260d6894507.jpg


Sendt fra min SM-S918B med Tapatalk
 
Last edited:
OP
B

Brabus 3.6-24

Active Member
Joined
Aug 31, 2006
Messages
25
Reaction score
1
Location
Denmark
  • Thread Starter
  • Thread starter
  • #2
Is there any places the W202 electronicly has some weak known spots to be aware of that has to do with voltage supply..?

Sendt fra min SM-S918B med Tapatalk
 
OP
B

Brabus 3.6-24

Active Member
Joined
Aug 31, 2006
Messages
25
Reaction score
1
Location
Denmark
  • Thread Starter
  • Thread starter
  • #3
OVP relay changed. No difrence. It still cuts out at more than 50% throttle

Really need some help

Sendt fra min SM-S918B med Tapatalk
 
OP
B

Brabus 3.6-24

Active Member
Joined
Aug 31, 2006
Messages
25
Reaction score
1
Location
Denmark
  • Thread Starter
  • Thread starter
  • #4
Really no master tech in this forum?

Sendt fra min SM-S918B med Tapatalk
 

AIB understand your special Mercedes deserves a special insurance policy. We have a refreshing attitude to insuring high performance, modified, imported or classic and vintage cars and deal with the UK’s leading insurers. We offer discounts for length of ownership, where the vehicle is kept overnight and limiting the mileage and can also cater for those clients who need higher mileage and business use. To obtain a quotation please call the team on 02380 268351 or visit us atAIB Insurance
Top Bottom