Question about 1994 GMC Sierra

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It strugless to go when u floor it it dosent eaven pick up the check engine ligth is on and gas milage sucks

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Check the vehicle for a trouble code , by using a code tester, that can be hooked up to the aldl link, under your instrument panel , on the drivers side, after retreiving the code, then find out what the code means in the code booklet , that comes with the code tester, and then check that specific area, and if needed replace that part, you can also have the codes retrieved free by a auto part store employee. the tester can also take the light out, after the problem has been corrected.

Posted on Apr 08, 2011

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You could need a tune-up if the ignition components are in bad shape.the other thing it could be is the catalytic converter is pugged up not allowing exhaust gases to flow freely creating poor acceleration and bad gas mileage as you have to push farther on the gas pedal to get it to go.you can have the exhaust back pressure checked at a shop and it should be less than 1lb at idle and less than 2 lbs at 2,000 rpm.there is a vauge possibility that the fuel pump is bad.

Posted on Apr 08, 2011

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