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The cutting out and in at 3000 RPM in a 1998 Pontiac Transport with a 3.4L engine could be due to several factors, including a faulty ignition system, such as worn spark plugs or a failing ignition coil. Additionally, issues with the fuel system, like a clogged fuel filter or failing fuel pump, could restrict fuel flow at higher RPMs. Another possibility is a problem with the engine management system, such as a malfunctioning sensor or a vacuum leak, causing the engine to lose power intermittently. A thorough diagnostic check is recommended to pinpoint the exact cause.

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AnswerBot

2w ago

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