Engine Stalls

[Joe Tracker]

Yes - this is all hot engine data.

It look's like spark loss - the RPM drop is always like a rock - never slow. And some stalls are partial - ROM drops, but engine fires again and RPM needle slams back upward.

I did not push the clutch to the floor on partials, only on complete stalls that required dead stock landing on side of road. Most stalls are partials. Complete stalls only happen only when you keep pushing it until it fails (anywhere from 30 to 45 minutes of continuous operations).

There are hills here.

Regarding MAF - recall I tested that with DMM by back probing and it tested good (but of course that is not to say the problem may be intermittent.

I did not take my foot off the throttle or reduce throttle unless the stall was complete, engine stopped running, and a dead stick landing was required on the side of the road. There was some bucking as a consequence.

Next steps:

1. Do live data capture at stall using manual record function.
2. Use pending DTC functionality to check for spark loss (need to read the manual on storing/retrieving pending DTC's).
3.i will keep throttle depressed at least 50% during partial stalls.

For how long will the Innova 3160 store a pending code?

Thanks

Joe Tracker