Question about 1998 Pontiac Sunfire

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Car starts and runs drivers ok on flat ground,loses power on a hill

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Could be a head gasket that is losing pressure going up a hill with the added strain.

Posted on Apr 23, 2013

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Posted on Jan 02, 2017

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SOURCE: no power going up a hill

catlytic convertor clogged up these models causing same prob

Posted on Apr 27, 2009

  • 3 Answers

SOURCE: No power accelerating or going up a hill

I have problems with mine too kinda the same this up hills,on ramps and occationally when i put it in park after driving. it sounds like somones in it reving it and letting off i changed the throttle positioning sensor,fuel filter,cut the cat converter off,replaced air filter and it shows no codes anytime i get it scanned i need some advice i dunno what else to do

Posted on Oct 10, 2011

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