Help please, 1989 throttle body injection
45

Asked by tleearley Dec 29, 2010 at 01:40 PM about the 1989 Chevrolet Camaro RS Coupe RWD

Question type: Maintenance & Repair

what's gojng on?1 My car seems to cut out once I get up to 60-65 mpg. It lurtches, then drives ok for a while, then lurches again. Does it in both 3rd and 4th gear. I also notice that the speedometer will begin to vibrate 3-5mph and the car will lurtch again. Doesn't do it at lower speeds. I've changed the fuel filter, cap & rotor, tranny fluid & filter, adjusted the throttle position cable, and changed the O2 sensor. Nothing has worked and I'm out of ideas. Could it have something to do with the velocity speed sensor, since the speedo is wavering?

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