94 5.7 l tbi flooding out after it gets warm please help

Discussion in 'General Chevy & GM Tech Questions' started by Dawg, Jun 28, 2013.

  1. Dawg

    Dawg New Member

    I am having a problem with my truck flooding out after it gets warmed up. When its cold it will start up like normal and run fine for about 5 mins., then it starts bogging down and dies. The only way to get to start again is to unplug both injectors restart it and let it burn all the gas in the intake (takes about 6 seconds). Then if you plug the injectors back in and start it up it will run for about 3 seconds and start flooding again.
  2. Dawg

    Dawg New Member

    found the problem it was the coolant temp switch thanks everybody
  3. Bo Alllen

    Bo Alllen New Member

    I am so glad I found this out, I have had a simalar problem. Was only slightly bogging down when warm and smelled like it was too rich. My temp gauge has been acting weird lately, I will try replacing sensor, after all it's a '94 with 350K miles and see if that will fix, thanks.
  4. RayVoy

    RayVoy Epic Member 5+ Years 5000 Posts

    Can be a lot of things, but consider the O2 sensors (front ones). When the engine is cold, these sensors are bypassed, when they get hot and the engine is hot, the PCM switches to the O2 sensors. If they, or one, is reading bad, the engine will be rough.

    They will get lazy after 80,000 miles, I change 'em every 100.

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