1998 CHEVY VORTEC 5

  • Tiny
  • petersysto
  • 1998 Chevrolet Silverado

1998 chevy vortec 5.7. Fuel staved. New pump, filter. Getting gas to manifold under pressure. Will start with gas down throttle body. But not staying running. Also can't get code reader to work, what fuse powers up that circiut? Thank-you. Pete.

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Sunday, February 17th, 2013 AT 1:18 AM

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  • Tiny
  • saturntech9
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Do you have a multimeter to do some testing?

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Sunday, February 17th, 2013 AT 2:57 AM
  • Tiny
  • saturntech9
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In the inside fuse box the fuse labeled aux pwr fuse number see if its blown its a 25 amp fuse?

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Sunday, February 17th, 2013 AT 3:05 AM
  • Tiny
  • petersysto
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Yes I have a multimeter. Thanks for responding. Pete.

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Sunday, February 17th, 2013 AT 3:18 AM
  • Tiny
  • petersysto
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No fuse in slot #7.

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Sunday, February 17th, 2013 AT 3:42 AM
  • Tiny
  • saturntech9
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Yeah number 7 fuse 25 amp put a fuse in and see if the scan tool powers up and check for codes.

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Sunday, February 17th, 2013 AT 5:54 AM
  • Tiny
  • petersysto
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Code tool works now. ERROR p0-108. Map senser. Can we trouble shoot this. And where is it located? This was the only error code. How do you know if the pcm is working properly?

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Sunday, February 17th, 2013 AT 2:12 PM
  • Tiny
  • saturntech9
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Most likely the pcm is good that would be the last thing we would suspect with that code. Does your scan tool display live engine data or just read codes?If it only reads codes its going to be hard to trouble shoot the code.

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Sunday, February 17th, 2013 AT 3:38 PM
  • Tiny
  • petersysto
  • Member

First off. Thank-you so much for responding. Our code reader is a Innova 3030 canobd2 car reader. Should I be cranking the engine while code reader is reading? Oh just so you know. Fuel is not returning to tank. Could this be a sign of a bad fuel pressure regulator? How would you troubleshoot one? I appreciate any thoughts or ideas. You've been very helpful.

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Sunday, February 17th, 2013 AT 6:43 PM
  • Tiny
  • petersysto
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Oh. No live data on our code reader. Sorry. What's next? Thanks-again. Pete.

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Sunday, February 17th, 2013 AT 6:45 PM
  • Tiny
  • saturntech9
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What is the actual fuel pressure?If you haven't checked it yet rent a pressure gauge at auto zone and check it.

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Sunday, February 17th, 2013 AT 10:13 PM

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