[biggsteve97]

Originally Posted by SEVEND2

99 Burban 4x4 k1500 LS model anyhow weak on take offs gets ok when hits 2nd gear, runs good after that, same loss of power no balls when hitting kick down too... Engine light comes on at that point P0101 and P0101pd.. Cleaned the mass airflow sensor, ran it same issues with no balls on take offs, pass downs and climbing a small hill like an on ramp to a freeway incline.... Any ideas, help getting really frustrated.... Thanks. Sevend2!!!!
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Our 99 suburban started the same way. eventually after doing cap, rotor, wires, plugs, ignition coil, ignition module, oxygen sensors, mass air flow sensor and a fuel pump. Nothing helped, it just kept getting worse and eventually it got to where it wouldnt even start. Pulled the upper intake and found fuel pooled in the wierd pockets on the intake floor, the spider was leaking as well as the pressure regulator and the mechanical poppet valves were stuck shut on most cylinders. Replaced the spider with the Borg Warner multipoint conversion kit. That was three years ago and have never had another problem since. plus has more power and mpg's than we had the first 200k. These engines are notorious for bad spiders. The poppet valves are junk and will cause all kinds of weird driveability issues including no power/lack of power and eventually hard starting. They must have 60 psi minimum to even force the poppets open so if the lines under the intake have even the slightest leak there will not be enough pressure at the poppet to open it especially after 60k miles and they are gummed up.