My Reverent-built MS3 has been running my 2004 VVT in a 94 chassis for the past 18 months and 20K miles. Within the last 3 weeks I suddenly have been getting a very intermittent Sync Loss. This will happen once or twice in an hour drive, but it is not consistent. The MS3 will lose sync (reason 32), the fuel pump relay will click off/on, and then sync is quickly restored. Here is a screen-shot of the loss of sync caught with the sync error logger. CSV Attached.
What I have tried so far.
1) Replaced cam angle sensor with a new unit. No change better or worse.
2) All grounds cleaned. No change better or worse.
3) Adjust crank angle sensor a little closer. No change better or worse.
4) Noise Filtering - Turned tach period rejection on. I went three days (4-5 hours driving) with no loss of sync, but just today got one this morning. Placebo? or maybe slight improvement.
I have a new crank angle sensor on order, this is the last obvious item I see left, unless I am missing something basic?