Recent content by Bighorns53

  1. Bighorns53

    96 5.7 Vortec P0102 Troubleshooting

    Can anybody answer this mystery? How would unplugging the MAF sensor fix or cover up a timing issue? I purchased another gmt400 (K2500 suburban 8600gvw, thing is an absolute hog NV4500 swapped). Really interested in some of the operations of these older computerized setups. Dealing with a high...
  2. Bighorns53

    96 5.7 Vortec P0102 Troubleshooting

    Reviving this for an end to this thread if anybody finds themselves in my position. It ended up being my distributor was off time throwing random misfires, no cam/crank correlation codes. Very weird considering unplugging the MAF made the random misfire basically disappear. Not sure how that...
  3. Bighorns53

    96 5.7 Vortec P0102 Troubleshooting

    Really awesome help thanks to the both of you. I guess im getting way ahead of myself. Im having a hard time visualizing how the PCV/crank case air would be tied into the vacuum end of things. Idk how else one would get around it though, just venting into the engine compartment? My drivers side...
  4. Bighorns53

    96 5.7 Vortec P0102 Troubleshooting

    Thanks for the replies. Ill check out those troubleshooting steps. Unfortunately i only have a code reader at the moment. Any recommendations on a bluetooth adapter and iphone app setup? Or a cost effective scanner a rookie such as myself would benefit from? The truck has 250k on it...
  5. Bighorns53

    96 5.7 Vortec P0102 Troubleshooting

    1996 5.7 Vortec Stock Troubleshooting my p0102 that only comes on after it hits first closed loop. Ive read 1000 pages and videos… 5v at sensor yellow, 12v on pink, ground (black/white) has 40ohms of resistance to the battery terminals. Fuse engine A1 (20a) good 0ohms. My question to a...
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