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+--- Thread: Cm871 RPM shut off (/showthread.php?tid=10482)
Cm871 RPM shut off - 3406E - 01-22-2026
Asking for a friend. Issue is engine shuts off when ramp goes over 1500 rpm. Cam sensor changed, same issue occurred.
RE: Cm871 RPM shut off - 3406E - 01-22-2026
To add he said he took the belly out of the shut off solenoid and managed to reach home.
RE: Cm871 RPM shut off - tree98 - Yesterday
Sounds like a bad fuel shutoff solenoid right???? You didn't give us much information to go on.
RE: Cm871 RPM shut off - 3406E - Yesterday
Well, he said he was driving home and he heard it back fired; So he throttled it up to 1800 rpm to see if the issue would happen again it just trickled down and stalled out. It starts fine and everything but as soon as you go up in the rpm’s like 1500 it shuts down. Plugged it up no codes.
RE: Cm871 RPM shut off - 3406E - Yesterday
That solenoid was changed this morning. Drove up the road came back down in the yard then shut off itself
RE: Cm871 RPM shut off - 3406E - Yesterday
Finally got a code saying
VGT- Mechanical system not responding or out of adjustment
SPN:2633
RE: Cm871 RPM shut off - tree98 - Yesterday
(Yesterday )3406E Wrote: Finally got a code saying
VGT- Mechanical system not responding or out of adjustment
SPN:2633
That code won't cause it to shut down unless its choking the engine off completely. Monitor the turbo position with insite and see if that's what is happening.
There's a very high likelihood that the ECM is going bad. Start it and while its running give it a good smack with a screwdriver handle right on top of the ECM. If it dies you need an ECM.
RE: Cm871 RPM shut off - 3406E - Yesterday
lol, I was talking to him just when he tapped the computer and I could hear it shut off. Thanks