8,000 rpm in diag mode while cranking.. Install angle help

1022 Views 3 Replies 2 Participants Last post by dub tek, Jul 30, 2013

dub tek

Discussion Starter · Jul 29, 2013

Hey All
First post in here
Car: vw Corrado
PG bottom 9A head hybrid t3/4
034 Ic (waste spark 4 post coil RC550 injectors)
60-2 crank trigger wheel

Ok
I have the install close to complete... (talking to Ic with laptop, sensors all check out and such)
Issue I have is 8000 RPM indicated in diagnosis mode when its at cranking speed

Now the CONFIG screen says >> "Index Teeth till TDC"
The tuning manual says >> The # of teeth between the missing teeth and the crank position sensor with the engine at cylinder 1 TDC position."

^^ Few questions from the pros about this!

My missing teeth are 7 teeth from TDC
Then the missing PAIR.
Sensor is an additional 11 teeth from the other side of missing gap

I have tried the settings of "7 9 16 18"
All result in the same 8K-ish rpm reading

I dont know what to make of the conflicting instructions..
OR if this is even my real issue!!

Im looking for a DSO so I can SEE what my signal looks like...
But any help on a GOOD input # and how you calculated it wold be GREATLY appreciated!!!

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newt

· #2 · Jul 29, 2013

The number of teeth to TDC has nothing to do with the RPM reading, only the angle of the crank timing.

If you are seeeing huge RPM's while cranking there is something amiss with your signal. Usually it's a wheel runout issue. your WDBG is likely all over the place, are you getting CAM # readings or CDBG values as well? I mis-configured cam sensor can also cause lots of issues.

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dub tek

Discussion Starter · #3 · Jul 30, 2013

newt said:
The number of teeth to TDC has nothing to do with the RPM reading, only the angle of the crank timing.

Yea
I didnt think it wold have effect on speed signal
But I guess Im still confused on WHAT is my proper #!??

Is it teeth till TDC or teeth till missing?

Can you elaborate on what proper?
I do understand the fine adjustment with the 3rd pid for partial tooth width
Using the "ZERO" on main monitor screen to use with the timing light

I just need clarification on whats the proper tooth count.....

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dub tek

Discussion Starter · #4 · Jul 30, 2013

newt said:
If you are seeeing huge RPM's while cranking there is something amiss with your signal. Usually it's a wheel runout issue. your WDBG is likely all over the place, are you getting CAM # readings or CDBG values as well? I mis-configured cam sensor can also cause lots of issues.

Engine is CRANK WHEEL ONLY NO CAM SENSOR...
I have used the supplied harness and there is NO cam signal wiring
I show NO activity in monitor screen for cam readings so NO RFI jump that I can see

Tripple checked all the mechanicals for the sensor and wheel
It has a total runout of .003/.004 AT MOST
I have tried adujsting the distance FROM the teeth from .002-.016/.017
I get same 8K-ish readings till sensor is too far way and looses pickup
I show NO speed till i crank so im not seeing RPM without movement

Im still tryn to find a DSO for actual checking of the signal

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