Cm871 RPM shut off

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Cm871 RPM shut off

01-23-2026, (Subject: Cm871 RPM shut off )

Post: #7

tree98 Offline

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RE: Cm871 RPM shut off

(01-23-2026 )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.

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Thanks given by:

3406E , amermextrucker

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Messages In This Thread

Cm871 RPM shut off - 3406E - 01-22-2026,

RE: Cm871 RPM shut off - 3406E - 01-22-2026,

RE: Cm871 RPM shut off - tree98 - 01-23-2026,

RE: Cm871 RPM shut off - 3406E - 01-23-2026,

RE: Cm871 RPM shut off - 3406E - 01-23-2026,

RE: Cm871 RPM shut off - 3406E - 01-23-2026,

RE: Cm871 RPM shut off - tree98 - 01-23-2026

RE: Cm871 RPM shut off - 3406E - 01-23-2026,

RE: Cm871 RPM shut off - amermextrucker - 01-24-2026,

RE: Cm871 RPM shut off - 3406E - 01-25-2026,

RE: Cm871 RPM shut off - mikkhh - 01-25-2026,

RE: Cm871 RPM shut off - 3406E - 01-25-2026,

RE: Cm871 RPM shut off - tree98 - 01-25-2026,

RE: Cm871 RPM shut off - 3406E - 01-26-2026,

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