i have a chevy 97 z71 4x4 starts fine runs cruddy especially at idle &loss pwr steering

Asked by Denise Mar 14, 2017 at 02:23 PM about the 1997 Chevrolet C/K 1500 Silverado Extended Cab LB 4WD

Question type: Maintenance & Repair

we have changed caps & rotors twice, new spark plugs/wires and still got
isssues with running smooth ( worse when at idle). I feel its not getting enough
power or something.  I also loss pwr steering when not on gas but then comes
back  when im above 2500 rpm.

1 Answer
189,395

Paul answered 7 years ago

They is a few things you should check, such as your fuel pump pressure, first change the fuel filter. If that checks out Ok, I would start looking for a vacuum leak on the hoses leading up to the Throttle body. While you are there clean the throttle body with a good throttle body cleaner. I would then check the AIR IDLE CONTROL Sensor, the connector sometimes will come losse. also note that high ethonal content in fuel will cause the issues you are having.

Mark helpful

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