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95 Cadillac Deville 4.9 No codes surges at idle, clicking noise in idle control. random stalling

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  • July 13, 2012 at 11:00 am #459782
    moparfanmoparfan
    Participant

      any CEL codes? did it run better with the fuel pressure at 50? you would need to cover the vacum line with your finger while you have it unplugged.

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    • July 21, 2012 at 11:00 am #459798
      turning_wrenchesturning_wrenches
      Participant

        it pretty much idles great when cold and runs good when cold..when it gets approximately 199 degrees or so, still idles ok then take it for a ride and it starts the Hiccup thing..press on the gas has plenty of power..climbs hills great but every now and t

        July 21, 2012 at 11:00 am #459799
        Trying my bestTrying my best
        Participant

          Complete newby here, is there any sense in checking the injectors? Or perhaps an internal intake manifold gasket leak?

          July 21, 2012 at 11:00 am #459800
          moparfanmoparfan
          Participant

            02 sensor will switch back and forth, fuel trims should stay near 0, A vacuum leak can happen with heat as metal expands with heat. so you mite get it warmed up and having the issue then check for vacuum leaks.

            July 23, 2012 at 11:00 am #459801
            EricTheCarGuy 1EricTheCarGuy
            Keymaster

              I don’t like to condemn sensors without a check engine light and it’s difficult to diagnose that way.

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