Question regarding VSS to 413 DME

[5mall5nail5]

Jon, I have also heard of people using the cam signal. Such as cars not running the stock cluster. Does anyone have any form to test the signal coming and compare them? That might save some hassle too.

Cam signal? That seems odd - the cam signal will follow the engine RPM (1/2 of RPM of engine) and not road speed at all. I think that would work in providing something to the ECU but the speed would be all wrong, obviously.

[frankie591]

Any info on whether stomp test code 1234 means the vss signal isn't getting to the ecu? I have no soft rev limit, car pulls hard all the way to 7k, also the tach, econometer and obc all work as they should.

Any help is appreciated!

[5mall5nail5]

1234 shows up as a speedometer input signal issue

[lumbergh17]

Cam signal? That seems odd - the cam signal will follow the engine RPM (1/2 of RPM of engine) and not road speed at all. I think that would work in providing something to the ECU but the speed would be all wrong, obviously.

Right, I messaged Mike but he hasn't gotten back to me. In fact this is about the only thread I've found talking about it. See post #2. http://forums.bimmerforums.com/forum....php?t=1747260

[woc]

Jon! I guess I'm stealing this thread, but still in the topic. So today I decided to eliminate the damn rev cut-off, so I spliced the brown red wire from yellow connect behind the cluster and ran it behind the dash to under the glove compartment directly into pin 42 (black/white) wire in the dme connector harness. I believe the problem is gone, drove the car for a lil while with no problem, but I still have CEL for #26 faulty dme battery voltage, #78 coolant temp sensor, and O2 sensor heater relay (clicks at times) and I still have no RPM.