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Runs couple seconds after shut-off: Diesel 2001 Pajero (Shogun) 5speed, 3200 Engine

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Old Sep 8, 2020 | 05:32 AM
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Default Runs couple seconds after shut-off: Diesel 2001 Pajero (Shogun) 5speed, 3200 Engine

Does anyone have any experience with a Pajero 3200 diesel engine continuing to run for a couple seconds after turning off the key switch? My engine doesn't always do it. But when it does happen, in the 2-3 seconds it continues to run, the RPMs increase slightly from 700 RPM idle to 1,200 - 1,400 and then it turns off. It worries me because I am concerned there is perhaps a petroleum contaminant / lubricant getting into the injection pump or air supply or other inappropriate fuel source which could cause a runaway diesel if the problem is not addressed soon.

Is there an electronic solenoid that cuts off the fuel supply that perhaps is not consistently actuating its full motion? What do you think could be causing the problem?

This rig has 500,000 km, and is otherwise going strong!

Thanks for any and all help you can offer me.
 
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