I have an old body style 89 k3500. I hear a loud air sound coming out of the throttle body around the IAC. I've changed out the injectors, pressure reg., IAC, o2 sensor, ERG, ERG sensor. The engine idles up and down and when you give it gas it lack power. Engine has been rebuilt 2 years ago and has ran great until 3 months ago. It has good fuel pressure. I'm baffeled to what it could be. I put in a super chip a year ago and it ran good.
have the same problem?
Sunday, March 30th, 2008 AT 11:24 AM