Sputtering @ low rpm

10

Asked by Nov 04, 2016 at 03:33 AM about the 1993 Chevrolet C/K 1500 Cheyenne Standard Cab LB 4WD

Question type: Maintenance & Repair

Sputtering at low rpm. Idles Great. At running speed it smooths out

1 Answer

87,075

Check the EGR valve, it could have a broken spring causing the valve to flutter with the engines vacuum pulses instead of opening smoothly. You may also want to check the sweep of the TPS, if it has a bad or open spot in it especially right off idle that also,can give you a sputter. Check the codes, it may have something stored in memory that can also help track this down.

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