Results 1 to 18 of 18

Car keeps cutting out (Not VATS)

This is a discussion on Car keeps cutting out (Not VATS) within the General Help forums, part of the LSx Technical Help Section category; I've done this bypass and it worked great, I've got an 02 trans am , I was driving it home ...

  1. #1
    Junior Member
    Join Date
    Feb 2015
    Location
    Indian trail nc
    Posts
    14

    yellow
    2002 trans am

    Car keeps cutting out (Not VATS)

    I've done this bypass and it worked great, I've got an 02 trans am , I was driving it home today and it cut off ,pulled over and it just turns over but doesn't fire up. No code is on no check engine light. Thought maybe my resistors came out but its fine, the security light isn't on and if I take it out it doesn't do nothing so I ruled that out. Could this be a crank sensor or can sensor? I'm pulling my hair out here. The car only has 53000 miles on it and very well taking care of, need some help on this

  2. #2
    Super Moderator
    pajeff02's Avatar
    Join Date
    Feb 2009
    Location
    Mansfield, PA
    Posts
    21,567

    Black & Blue
    '02 WS.6 / '07 Suburban

    Engine needs fuel, air and spark. Start with the basics -- does it have fuel pressure at the rail?

  3. #3
    Junior Member
    Join Date
    Feb 2015
    Location
    Indian trail nc
    Posts
    14

    yellow
    2002 trans am

    Yes plenty of fuel , fuel rail is pressurized ,air is good but no spark, I disconnected the battery to reset the system and the car fired up and ran for a min then cut off, then it just turns over but doesn't fire up, weird .

  4. #4
    Super Moderator
    pajeff02's Avatar
    Join Date
    Feb 2009
    Location
    Mansfield, PA
    Posts
    21,567

    Black & Blue
    '02 WS.6 / '07 Suburban

    VATS shouldn't shut the car down after it is running like that. You can undo your bypass and just try it (unless the system was having an issue and you had to bypass it). Any recent work done to the car?

  5. #5
    Junior Member
    Join Date
    Feb 2015
    Location
    Indian trail nc
    Posts
    14

    yellow
    2002 trans am

    I had to bypass the vats due to a broken wire on the key cylinder, no work has been done to the car, its bone stock,

  6. #6
    Super Moderator
    pajeff02's Avatar
    Join Date
    Feb 2009
    Location
    Mansfield, PA
    Posts
    21,567

    Black & Blue
    '02 WS.6 / '07 Suburban

    A bad sensor will generally trip the SES. I take it you can hear the fuel pump engage when you energize the ignition? You have checked fuses? Swapped relays around for any of the critical engine systems? Eyeballed the underhood wiring and sensor connections?

  7. #7
    Junior Member
    Join Date
    Feb 2015
    Location
    Indian trail nc
    Posts
    14

    yellow
    2002 trans am

    Yes I can hear the fuel pump, checked the fuse panel in the car but not the relays or fuse under the hood, checked most of the connection and all seems good, no loose connection or frayed wires. I'll swap around relays tomorrow and get back with u .

  8. #8
    Junior Member
    Join Date
    Feb 2015
    Location
    Indian trail nc
    Posts
    14

    yellow
    2002 trans am

    Just got home, turned the key car fired up ran for 2-3 mins shut off now just turns over. So i checked all fuses ,swapped relays and still nothing, so for giggles I plugged in my obdll tester and p0335 comes up , no light is on but code reads, now I called GM and they said that the sensor can or crank wouldn't make it not start just run crappy. Going to pull a plug when wife gets here and c for sure if its not sparking . any thoughts

  9. #9
    Junior Member
    Join Date
    Feb 2015
    Location
    Indian trail nc
    Posts
    14

    yellow
    2002 trans am

    No spark , testing it the old way against the block.

  10. #10
    Super Moderator
    pajeff02's Avatar
    Join Date
    Feb 2009
    Location
    Mansfield, PA
    Posts
    21,567

    Black & Blue
    '02 WS.6 / '07 Suburban

    Crank sensor is on the passenger side of the block above the starter. If it is throwing a code something isn't happy there. I would have to check my manual to see what the symptoms are -- certainly intermittent by what you are experiencing. Stock manifolds or headers?

  11. #11
    Junior Member
    Join Date
    Feb 2015
    Location
    Indian trail nc
    Posts
    14

    yellow
    2002 trans am

    Stock manifolds,

  12. #12
    Veteran 0rion's Avatar
    Join Date
    Aug 2005
    Location
    ohio
    Posts
    22,519

    98 Formula
    06 duramax

    this needs it's own thread.....not vats related.

  13. #13
    Super Moderator
    pajeff02's Avatar
    Join Date
    Feb 2009
    Location
    Mansfield, PA
    Posts
    21,567

    Black & Blue
    '02 WS.6 / '07 Suburban

    Good point.

    Ed - wire insulation tends to get melted and things short out around long tubes if things are not properly routed and tied off. That is why I asked... If you are working on the car this weekend, I can grab my books and we can walk through some pinpoint testing perhaps...

  14. #14
    Junior Member
    Join Date
    Feb 2015
    Location
    Indian trail nc
    Posts
    14

    yellow
    2002 trans am

    That would be awesome ,I started another thread under crank shaft position sensor. I really appreciate your help.

  15. #15
    Super Moderator
    pajeff02's Avatar
    Join Date
    Feb 2009
    Location
    Mansfield, PA
    Posts
    21,567

    Black & Blue
    '02 WS.6 / '07 Suburban

    I'll be out in the garage later and will check in from time to time today if you want to run over some stuff in the service manual as far as pinpoint diagnostics. Is your email address in your profile valid?

  16. #16
    Junior Member
    Join Date
    Feb 2015
    Location
    Indian trail nc
    Posts
    14

    yellow
    2002 trans am

    I put the crank shaft sensor in yesterday and and it seem to be running fine, going to drive it around today and hopefully all is well. Thanks for all your help ,I'll keep u posted, and yes its a good email.

  17. #17
    Member RONS98TA's Avatar
    Join Date
    Jan 2009
    Location
    MARYLAND
    Age
    44
    Posts
    803

    BLACK
    1998 PONTIAC TA

    Sounded like an intermittent failure of the crank sensor. (in Homer Simpson voice) Stupid crank sensor!!! Glad to hear you got her running again.

  18. #18
    Super Moderator
    pajeff02's Avatar
    Join Date
    Feb 2009
    Location
    Mansfield, PA
    Posts
    21,567

    Black & Blue
    '02 WS.6 / '07 Suburban

    Sounds good. Hopefully, that's all it was.

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Help: 3rd gen VATS
    By 2000dreambird in forum General Help
    Replies: 2
    Last Post: 08-05-2013, 11:14 PM
  2. VATS help
    By totalkos in forum General Help
    Replies: 6
    Last Post: 07-21-2008, 07:28 PM
  3. vats
    By supercampeones4 in forum Computer & Tuning
    Replies: 1
    Last Post: 02-08-2008, 02:19 AM
  4. VATS????Security problem with the VATS.
    By LS1RacerMan30 in forum General Help
    Replies: 14
    Last Post: 07-14-2007, 08:39 AM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •