My 1999 chevy s-10 with a 4.3 vortec hesitates unless you hold the fuel pedal to the floor, code reads low voltage to o2 sensors. I've replaced all 3 o2 sensors, new plugs, wires, distributor cap, rooter Button, throttle control sensor, themperature control sender, and took the egr valve off and cleaned it out. Nothing has helped, it idles smooth, runs good other than hesitating. Runs good as long as you hold the fuel pedal to the floor but if you let off the pedal any at all it hesitates. I've already spent a fortune on my truck but nothing helps. Can u help?
have the same problem?
Tuesday, October 8th, 2013 AT 2:54 PM