Question about 1993 GMC Sierra

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Hesitation i have a 1993 suburban w/ a 350. i replaced the plugs .035 gap, cap, rotor, air filter, fuel filter, and did a thorough cleaning of the throttle body. the wires stayed but they are only a year old and i may use the suburban once a week or less. even though i made the replacements i still have a hesitation once the vehicle is at opperating temp. can anyone give assistance.

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  • 69texas Sep 02, 2008

    throttle body, which was thoroughly cleaned!

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Remove the vaccume line to the EGR valve and see if it still does it. It may be a bad EGR valve.

Posted on Sep 10, 2008

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Is it a throttle body or fuel injected?

Posted on Sep 02, 2008

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1 Answer

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