Question about Pontiac Montana

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2000 pontiac montana reads a code 405, engine dies when i am slowing down coming to a stop and when sitting still if it dosent die it overheats,shifts really hard whats wrong

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Sounds like EGR Valve (Exhuast Gas Recirculation Valve) is sticking in the open position allowing exhuast gas into the intake manifold to soon which at idle will cause the engine to either run real rough or to stall out.Some EGR valves can be taken off and clean the carbon out of it or you can replace it.

Posted on Apr 02, 2011


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Posted on Jan 02, 2017


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