Sync loss during track racing

[rabid]

I was getting massive sync loss during a track day. It would seem to happen when the engine is really heating up. The lost sync reason is 2. The next day I drove normally and logged for 2300 seconds and there was no sync loss counts. Any ideas?

sync loss.png

[Matt Cramer]

What sort of sensor are you using? Might it be overheating?

Are you able to get a tooth log of the issue?

[rabid]

It is a honda oem hall sensor from a d17a2. I'm using it with a 36-1 cam wheel. I made an adapter plate to mount it to a d16z6. My best guess is that the sensor is overheating but you would think those sensors would be better than that? I might try using a heat gun or hair drier and see if it has the problem. I would have to get into racing conditions to have this happen AND be tooth logging.

[rabid]

I took a heat gun to the sensor and after a few minutes the engine shut down. The logger showed the teeth no longer being detected. I measured the temp of the sensor with an ir gun and it was at 72C. Soon after it cooled a little and worked again. 72 is hot but should it be hot enough to cause problems? I will either need to replace the sensor if it is not normal or create a cooling system for it.

[jsmcortina]

That's no good.. Sensors on an engine need to work up to 100. Use parts rated for 105C.

James

[rabid]

I replaced the sensor and heated it to 130c without problems.