Question about 1994 Pontiac Trans Sport

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1994 pontiac transport se sluggish running

It runs sluggish and shakes at starting out runs good after you accelerate and keep foot hard on gas at 45 miles per hour driving in overdrive it shakes once past 45 mph smoothes out have done tune up fuel filter fuel injecter cleaner same exact problem! new fuel filter plugs and wires air filter oil change trans fluid torque strut

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Could be coolant sensor for computer dumping to much gas . last time you put spark plugs in van

Posted on Mar 01, 2013

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Ck your exhaust pipe at rear of car noting any obnoxious smell like rottrn eggs. Hold a piece of paper, I use a dollar bill ,in in front of the exhaust. If it blows the paper gently, you have a catalyctic converter going or is bad. Will need replace if so.

Posted on Jun 02, 2009

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