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  1. TwistR

    5.7 Vortec: Intermittant start failure.

    I have a 96 K2500 5.7 Vortec that was running perfectly. However, for the past week, it starts up normally but when I try to start it when it's warm after it's been off for 5 mins, it won't fire, it just cranks. When I release the ignition it will fire and choke a little sometimes. I'm not...
  2. TwistR

    MAF sensor electrical from fuse box

    First, thanks everyone for the help. I watched a video on replacing the ignition coil and worked my way to solder point S108 referenced above. Replaced the wire running to the 12v on the MAF sensor connector. Runs like a charm now. Side Note: While checking my fuses, one 20A fuse looked good...
  3. TwistR

    88-98 Service Manuals

    Great Post. Thanks very much. I'd like to add this page I found that has all the pin-outs for the ECM/VCM: https://troubleshootmyvehicle.com/gm/4.3L-5.0L-5.7L/pcm-connector-pin-outs-1996-1997-page-4
  4. TwistR

    MAF sensor electrical from fuse box

    Thanks the manual helped a lot. For others reference I used the 1998_GMT-98_CK-3_SERVICE_MANUAL-VOLUME_3_of_4.pdf Pages: 1683 DTC code P0102 1696 MAF Schematic 1759 Diagnostics steps I get 5V at the sensor, it's the pink wire 12V that is dead. The solder point is S108 and location is...
  5. TwistR

    MAF sensor electrical from fuse box

    Yes, I used the manual posted above, wish I'd checked your post before I spent 2 hours pouring through the manual. :) But it's good to know I'm on the right path. It's snowing like crazy so I will check the connectivity later, but I have to assume that if that fuse was bad or if the power was...
  6. TwistR

    MAF sensor electrical from fuse box

    As far as I can tell, I was noping to identify the specific fuse for this sensor. I'm guessing the 12V is out of the fuse box and thee 5V is from the ECM, but I'm just guessing.
  7. TwistR

    MAF sensor electrical from fuse box

    Hello, I have a 96 K2500 with the 5.7 Vortec. It's running rough and idles up and down on start and hiccups on the highway; engine code P0102. I cleaned the MAF but no change. The engine does better if the MAF is disconnected, and my mileage takes a nosedive. I checked the electrical feed and...

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