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My 2001 ZD30 has an issue and I need some guidance...
This scenario usually only occurs at a traffic light stop. At idle it will cough, pump out a single puff of black diesel smoke and the rev counter goes to zero (engine returns to normal idle instantaneously). If it's in drive while this occurs it leaps forward momentarily as if the throttle has been advanced. The rev counter remains at zero until I rev it. The event triggers an amber engine warning light that extinguishes after a shut down. I don't have access to a diagnostic tool to plug into the Patrol...does it sound like an intermittent sensor issue?
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