MoTec Guy in Switzerland / Austria / Germany?

[Swiss_Toni]

Does any one know of a MoTec mapping/data guy in Switzerland, Austria or Germany?

I'm in the north east corner of Switzerland.

Thanks, Greg

[Vixpy1]

Dave Rowe at eps will travel for Motec stuff

[spatz]

shoot motec an email they most likely know who they are selling their stuff to

[Swiss_Toni]

I'm still chasing Dave Rowe for linking up the work he's already done ages ago and not yet provided

I'm in contact with MoTec and they are VERY good but I want to let that run it's course before asking for anyone local.

It's a real strange one I have, when the clutch pedal is depress, even a little, the engine dies and gear 2 flashes up on the dash


Car in neutral

Clutch pedal up – clutch engaged

Engine start

Runs fine

Depress clutch pedal, even a little (clutch disengaged)

Engine stumbles, if clutch is released it runs fine or if left depressed it stalls

Same with Traction Control ON or OFF

Once in gear, clutch engaged (NOT depressed) and driving along there is no problem


What I’ve found so far

1. The dash flashes up gear “2” for a moment and the M800 see gear 2.
2. There seem to be a ignition cut signal but not every time
3. The M800 has a diagnostic error the moment the clutch is pressed “Error Syn Signal” is logged, clear it and touch the clutch and it pops up again
4. While on track with mid to high RPM’s there might have been a vibration but sort of felt like the Traction Control but cleared itself at higher RPM’s

Here’s what I’ve done so far

5. Take off clutch pressure switch connector
6. Check that no wires are touching clutch mechanism or I’m hitting when pressing
7. Wiggle the wires that are anywhere near anything clutch related
8. Snugged up crank sensor and rerouted wires
9. Disconnect gear pot
10. Disconnect Gearbox ECU

None of the above changes anything.

[spatz]

is the speedo hooked up to the motec ? sounds like there is a programming that if the speedo is not returning a signal the ECU is shutting off.
As soon you disengage the clucth are the drive shafts stopping turning ?, or is that even happening in Neutral ?

Modern ECU are shutting off fuel pumps with stalling engines, maybe this is a similar problem, maybe the rev input and speedo input are somehow wired vice versa ?

[Swiss_Toni]

It happens while stationary and moving, touch the clutch and it dies

[spatz]

that really makes no sense to me, even in case of traction control, what the heck has the clutch to do with it ? You said you have a clutch pressure switch ?
What for ? Sounds maybe that there is a cable that is moving and cutting the circuit once the clutch pedal or take cylinder is moving ? Have you checked ?

[Swiss_Toni]

I fully agree, it makes no sense.

Checked to make sure master cylinder is secure, no wiring in the way, my leg / knee / foot are not hitting anything, gave eveything a wiggle.

[Steve_D]

Is there any end float in the crank shaft?
Pressing the clutch would tend to move the crank along its axis, if there is end float it may be moving the crank position sensor out of line.

What does the clutch pressure switch do?

Steve

[738 driver]

As Steve says x2 and as the clutch pulls instead of pushing against the crank/thrust bearings this may be also contributing.....worth pulling the crank sensor to have a quick check for any issues. The bellhousing clearances are usually quite tight too.

[Swiss_Toni]

I had the the crank sensor out, it was a bit loose as the bolt was too long.

I wiggled it around while loose and it didn't do anything.

It's now securly installed.

No difference

My plan tomorrow was to mesure the back of the flex plate with a dial indicator, I didn't have anyone today to help with that, to see what end float is and then talk to the engine builder.

There still is the odd thing that it ECU see it going gearbox going in to second gear and seems to cut the ignition back for a shift.

I may also give Hewland a call to get their thougths.

[ezakimak]

Have you tried actuating the clutch switch whithout actually pressing the clutch.

if that causes the engine to die then it sounds like its in the software. if that doesent then it sounds like its something mechanical related to the clutch movement.

[Swiss_Toni]

I tried the something similar, where I disconnected the clutch pressure switch and depressed the clutch pedal and on the data loggoing there was no clutch pressure input, however the problem remains

[spatz]

is there any wiring from the gear box to the Motec ?