Sterling L- Line, intermittent starting issue

This topic contains 1 replies and was last updated by Christopher Lorenzo 2 weeks 3 days ago
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Christopher Lorenzo
February 14th, 2021 3:26pm
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New to the form so thanks in advance for any help offered.

I have a 2000 Sterling L-Line with a CAT 3126 E engine.

At times the motor starts and other times it just cranks.

My diagnosis has brought me to the plug at the ECM. When I bypass the truck harness at the ECM and plug in to the ECM directly with my computer the truck fires up and runs perfectly every time.

What I have found is that with the key in the ON/Run position, power is being delivered to the ECM as it should.

When I cycle the key to the START position, the power being delivered to the ECM is lost at both pins.

I'm having a difficult time finding any sort of helpful wiring schematic to trace out the circuits.

Any advice or links would be greatly appreciated.

Thanks

Christopher Lorenzo
February 14th, 2021 7:01pm

All set problem fixed

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