Question about Pontiac Montana
The problem could be related to the tune up of the engine.. when the vehicle is traveling uphill there is more load on the engine, so if the engine spark plugs arent up to par they will missfire causing the hesitation your feeling .. damp conditions could also contribute the the misfire condition .. i recommend having the tune up parts checked and replaced as necessary.
Posted on Jul 28, 2009
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Posted on Jan 02, 2017
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