sync loss 2 missing tooth at wrong time

[TTC]

So i have had my ms3 running flawlessly for over a year. No issues untill last track day. Couple sputters, felt like a soft rev limiter. I got off the track and made it home. Today I took it out and it was a disaster. Could barely accelerate.

Its so random. Anyway, log shows that a tooth goes missing for no reason.\


85 corolla turbo
ms3 with expansion board
coil on plug with edis wheel and ford VR sensor
36-1 at crank speed.

I dont see why all of a sudden now i would have this issue. I dont think its interferance. The signal wire is shielded well, runs by the power and ground lines by the cop but since they are cop i figure it shouldnt cause issues. Especially since its been fine for over a year.

Jiggling the wires does nothing, and its perfectly fine at idle. Its only when we get going.

Might rewire the vr sensor and see if that fixes it. Where should i start.

you can see the missing tooth at the begging of the pic

https://flic.kr/p/pewNaE

[radial]

Have you physically checked the VR-sensor and trigger wheel?

I have seen this on a toyota and BMW setup before, crank trigger wheel and sensor was actually loose on both setups.

[TTC]

Wheels good. Checked sensor and closed gap some. Will report back later. Sometimes it's easier if the d*** things just break altogether lol.

[julian944]

Hi,

could you solve your problem? I 've the same problem car running fine for along time know makes trouble losing sync all the time. I think the adj pots r52 and r56 changed while the car run.
I'm interested how you solved it.

Regards Julian