truck idles pretty well but as soon as you step on the gas, theres little to no power . it laggs and if you keep on the gas it will rev high and then start speeding up.I have replaced fuel filter,cap & rotor,spark plugs recently? anymore ideas?

Asked by Apr 22, 2014 at 06:36 PM about the 1993 GMC Sierra 1500 C1500 Standard Cab LB

Question type: Maintenance & Repair

3 Answers

116,025

Air filter ok? Cat converter ok? Also might just need some fuel treatment added to a tank of gas to clean carbon build up.

2 of 2 people found this helpful.
30

check your egr valve

1 of 1 people found this helpful.
Best Answer Mark helpful

Air filter good,Cat good, will try gas tank treatment. Also going to check egr tomorrow

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