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by derfmier on February 17th, 2007

derfmier

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I have a 1989 chevy pickup with a 350 motor that has throttle body injection. the motor runs fine until warmed up then floods itself out. any help would be appreciated

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Answers. 6 helpful answers below.

  • by yamaha169 on February 6th, 2008

    yamaha169

    mine does the exact same thing (89 chevy 1500 pickup) TBI ... i found out that my catalytic converter
    was plugged.. which wasnt allowing enough air flow.. telling the injectors to dump in more fuel. (Might be worth checking out)

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  • by mickle on April 13th, 2009

    mickle

    Clean the idle air control valve

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  • by tjatherton on February 17th, 2007

    tjatherton

    It could be the automatic choke, check your vacuum lines, and also could be the air intake is blocked, not allowing enough air into the engine.

    1 comment | Post one | Permalink

  • by crf450x on January 23rd, 2011

    crf450x

    cam shaft position sensor may need replacing

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  • by imsalty on October 5th, 2010

    imsalty

    have same in g30 chassis, note oxygen sensor is at top of exhaust at thr 'y', no cat convert, oxy sensor is 1 wire, ie , no sensor ground wire, ; ground for oxy sensor must be thru exhaust pipe and exhaust manifold, not smart, late oxy sensors have as much as 4 wires, 1-oxy siginal, 2-oxy sig ground, 3- 12 vdc heater, 4- 12vdc heater ground, , oxy sensor does not work if its temp is below 700deg f , , i am going to attach / clamp a wire to metal body of oxy sensor and run it to ecu ground, then wrap exhaust pipes from iron manifold to 'y' and past oxy sensor to insure 'heat' gets to senor ,,,,, i think you may be able to install a 4 wire oxy and acomplish the same, , which i will do if the ground and wrap doesn't work, jaycar eletronics has a module to sense oxy voltage and display it in a series of leds for about $40, my e-mail= ssbdata@yahoo.com, , let me know if this helps , , cheers, , steve

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  • by lizza1150 on June 1st, 2010

    lizza1150

    check your distribature... we had the same problem and it fixed ours.. hope this helps you

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