MACK TRUCK MODEL: CH613, YEAR: 2000, ENGINE SHUT DOWN

[JohnRichard]

When we are starting the engine, it starts with high steady RPM, but it wont accelerate when we're pumping the pedal.

Then after 10 - 15 mins. it will indicate a Engine Shut Down on the dash board then then engine will automatically shutoff.

And when we're trying to start the engine again, it will only takes 2-5 mins. then the same thing happens.

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We try replace the EPS (Engine Position Sensor) and the PPS (Pedal Position Sensor) and check all wires but still wont work.

 

Hope you can give a advice.

 

Thanks.

[hatcity]

low oil pressure, low coolant level, or high coolant temp will cause shutdown on them.

Check those first before going further

[JohnRichard]

Sir, we already checked low oil pressure, low coolant level, or high coolant temp, and its all good.

We also change the PCM and TCM but still the RPM is steadily high IDLE and no acceleration.

[880joe]

you might check all your ground wires a bad ground will cause your truck to do odd things

[fjh]

Does the yellow check engine light come on check the codes?also remove the kick panel passengers side and check the vehicle ecu plug for signs of dampness.

[Macktech689]

Could be a loss of module communication on J1939.

[fjh]

1 hour ago, Macktech689 said:

Could be a loss of module communication on J1939.

Exactly 

[JohnRichard]

Sir, may I ask if anyone have a wiring diagram for the ECU?. We don't have a service manual so we're kinda having a problem.