I HAVE TO FLOOR IT TO KEEP THE ENGINE RUNNING

  • Tiny
  • chevygirl78
  • 1989 Jeep Comanche

We are working on an 89 jeep Comanche that will start and run only if you hold the gas pedal, What could the problem be? We have replaced the fuel tank due to a lot of trash in the bottom, we have replaced the fuel pump, strainer and filter as well. We have also cleaned the injectors and the fuel rail with carb cleaner. We have checked some vacuum lines to see if there was a leak in the system, and I have also tested the harness for the injectors via noid light. The fuel pump relay does work, and the cap and rotor are clean, and there is spark going to the plugs.

Friday, September 2nd, 2011 AT 5:13 PM

1 Answer

  • Tiny
  • JDL
  • Expert
  • 16,236 posts

Maybe a problem with idle air? Clean the throttle-body. Any applicable trouble codes? Use a gage and check fuel pressure.

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Friday, September 2nd, 2011 AT 5:44 PM

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