Page 5 of 7 FirstFirst 1234567 LastLast
Results 81 to 100 of 133
Like Tree1Likes

I need HELP. My car won't start

This is a discussion on I need HELP. My car won't start within the General Help forums, part of the LSx Technical Help Section category; I will try and get a pic. They are above the starter so it is hard to get a clear ...

  1. #81
    Member blackcar's Avatar
    Join Date
    Oct 2005
    Location
    Arkansas
    Posts
    1,234

    2000 Camaro SS
    '02 Z28 parting-out

    I will try and get a pic. They are above the starter so it is hard to get a clear view. I may pull the passenger's side header to get a clearer view. I think that would be easier than pulling the starter. I was having problems getting one bolt out of the starter.

    Now that my OBDII plug has the right voltage I can get the laptop out there and see if it will help any.

    Jay when I looked through my wiring diagrams I had, I saw a bunch of yellow/black wires. But not any that I thought would be by the starter.

  2. #82
    ʢ ൧ ൨ ൩ ൪ ൫ ൬ ൭ ൮Ր Ց Ւ Փ Smittro's Avatar
    Join Date
    Feb 2009
    Location
    Pittsburgh
    Posts
    9,965

    White
    2008 Hummer H3

    Quote Originally Posted by JayTA98 View Post
    according to the diagram on post #64 yel/blk connects between the starter relay and the BCM. I don't think is a ground.
    I think you're on to something here..

    I'm wondering if the external portion of the BCM harness got damaged?

    Sure sounds like it's possible.

    OP give me the colors for all the wires you found damaged if you can please.

  3. #83
    Super Moderator
    pajeff02's Avatar
    Join Date
    Feb 2009
    Location
    Mansfield, PA
    Posts
    21,567

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

    Without a pic, and without further checking of my book, are we sure those wires are in the ignition harness? Lots of yellow/black wires in the harneses.

  4. #84
    Senior Member JayTA98's Avatar
    Join Date
    Dec 2007
    Location
    Orlando, FL
    Posts
    3,351

    Mean Black
    1998 Trans Am

    Quote Originally Posted by pajeff02 View Post
    Without a pic, and without further checking of my book, are we sure those wires are in the ignition harness? Lots of yellow/black wires in the harneses.
    agree. Black get a pic of the harness when you can bud.

  5. #85
    ʢ ൧ ൨ ൩ ൪ ൫ ൬ ൭ ൮Ր Ց Ւ Փ Smittro's Avatar
    Join Date
    Feb 2009
    Location
    Pittsburgh
    Posts
    9,965

    White
    2008 Hummer H3

    You guys are'nt kidding there are yellow wires everywhere..lol

    I was flipping through my schematics and sheesh! lol

    I think Ima need a pic or two also..

  6. #86
    Member blackcar's Avatar
    Join Date
    Oct 2005
    Location
    Arkansas
    Posts
    1,234

    2000 Camaro SS
    '02 Z28 parting-out

    Probably will be Thursday. But will get it up as soon as I can.

  7. #87
    Member blackcar's Avatar
    Join Date
    Oct 2005
    Location
    Arkansas
    Posts
    1,234

    2000 Camaro SS
    '02 Z28 parting-out



    This is what the broke wires went to.



    This is where it plugged in. The thing out of foucs with blue and white sticker is the starter. The black plug just above the starter is where it plugs in. I think it is the crankshaft postion sensor but don't know for sure. Just for future reference the wires were yellow w/ black stripe, blue w/ white stripe, & lt. green. My book says the crank shaft postion sensor has yellow w/ blk, lt green, & yellow.

    After 4 hours of work I have the wire fixed better than stock. Good news I no longer have a short/bad ground. But the car still won't start. Just like before it turns over but doesn't fire. The fuel pump is not coming on and the gas gauge is not working.
    Last edited by blackcar; 07-14-2012 at 05:47 PM.

  8. #88
    Smiles for 9.5 Years cammed goat's Avatar
    Join Date
    Jan 2009
    Location
    Paterson/Ridgewood, NJ
    Posts
    11,474

    Phantom Black Metallic
    2004 GTO M6

    Did you re-check your fuses to see if any have possibly blown since the repair?

  9. #89
    Member blackcar's Avatar
    Join Date
    Oct 2005
    Location
    Arkansas
    Posts
    1,234

    2000 Camaro SS
    '02 Z28 parting-out

    Got to spend a little time on it yesterday. All the fuses are good. And the short/bad ground is still there. I tested the wires I patched and they are good. Guess I'm back where I started. Start pulling fuses until it goes away.

  10. #90
    Super Moderator
    pajeff02's Avatar
    Join Date
    Feb 2009
    Location
    Mansfield, PA
    Posts
    21,567

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

    That would be the crank position sensor that got its harness shredded. Let me grab my books and do some reading...

  11. #91
    Member blackcar's Avatar
    Join Date
    Oct 2005
    Location
    Arkansas
    Posts
    1,234

    2000 Camaro SS
    '02 Z28 parting-out

    Today was the first day I messed with the car in a couple of months. Frustration and south Arkansas summer heat don't mix well.

    I found out today there are two grounds on the ODB II port. A chassis ground and a signal ground. The chassis ground is good. It is the signal ground that is showing 10 volts with the key in run. When I pull the 20 amp eng sensor fuse it goes down to about 2 volts. According to my Haynes book the eng sensor fuse powers the O2 sensors, stop lamp switch, Reverse inhibit solenoid, skip, shift solenoid, and the MAF. I unplugged everything except the stop lamp switch and the short is still there.

    How can I tell if the short is in the PCM or the PCM is bad? Anybody got any other ideas? I'm at a loss.

  12. #92
    Super Moderator
    pajeff02's Avatar
    Join Date
    Feb 2009
    Location
    Mansfield, PA
    Posts
    21,567

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

    Signal ground? I'm not sure what you mean. There should not be any voltage present in a ground wire.

  13. #93
    Member blackcar's Avatar
    Join Date
    Oct 2005
    Location
    Arkansas
    Posts
    1,234

    2000 Camaro SS
    '02 Z28 parting-out

    Quote Originally Posted by pajeff02 View Post
    Signal ground? I'm not sure what you mean. There should not be any voltage present in a ground wire.
    According to what I have read on the OBD II port there are two grounds. Pin 4 is a chassis ground and pin 5 is called a signal ground. I think pin 5 is grounded in the PCM.

    But you're right there shouldn't be any voltage in it. I'm wondering if I have a short inside the PCM.

  14. #94
    Super Moderator
    pajeff02's Avatar
    Join Date
    Feb 2009
    Location
    Mansfield, PA
    Posts
    21,567

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

    Too bad you live so far away -- this is the type of problem that I love to troubleshoot on. I am getting ready to shut down for the night, but would like to get my manuals back out to ponder this one.

  15. #95
    Senior Member JayTA98's Avatar
    Join Date
    Dec 2007
    Location
    Orlando, FL
    Posts
    3,351

    Mean Black
    1998 Trans Am

    Have you continued to pull other fuses to see if the signal ground drops to zero? That will give you an idea of what circuits are related to the issue? sounds like the amp eng fuse circuit is one of them. If you found out that it drop to zero then disconnect everything related like you did with the amp eng fuse. reconnect the fuse if it stays at zero then is one of the components. If it doesn't drop to zero then it could a wiring issue or pcm issue.

  16. #96
    Member blackcar's Avatar
    Join Date
    Oct 2005
    Location
    Arkansas
    Posts
    1,234

    2000 Camaro SS
    '02 Z28 parting-out

    Back in June (before I fixed the CPS) when I pulled the ign relay the short went away and the fuel pump would prime. #63

    I think I will try that again. If it makes the short go away I will pull all 6 fuses it feeds (does it feed anything other than the six fuses???) and put the relay back in. If the short is still gone I will start adding fuses back one by one.

  17. #97
    Super Moderator
    pajeff02's Avatar
    Join Date
    Feb 2009
    Location
    Mansfield, PA
    Posts
    21,567

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

    Been reading in the service manual for the past half hour -- found a diagnostic procedure for an engine that will crank, but not run. Scanning it for posting now.

  18. #98
    Super Moderator
    pajeff02's Avatar
    Join Date
    Feb 2009
    Location
    Mansfield, PA
    Posts
    21,567

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

    For what it is worth -- here is the diagnostic:





  19. #99
    Member blackcar's Avatar
    Join Date
    Oct 2005
    Location
    Arkansas
    Posts
    1,234

    2000 Camaro SS
    '02 Z28 parting-out

    Thanks Jeff. I can't do any of the scans because I can not connect to the PCM. I'll pick up a spark tester to make sure, but I bet I'm not getting a spark. Is the there any good info on 6-1659? I'm 99.9% sure it is an electrical issue.

    On step 6 shouldn't that be done with ignition ON. I think that is a typo.

  20. #100
    Super Moderator
    pajeff02's Avatar
    Join Date
    Feb 2009
    Location
    Mansfield, PA
    Posts
    21,567

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

    Not really, but here it is:


Page 5 of 7 FirstFirst 1234567 LastLast

Thread Information

Users Browsing this Thread

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

Similar Threads

  1. Help: 97 TA won't start
    By ADAM-00SS in forum LT1
    Replies: 7
    Last Post: 07-08-2010, 04:13 PM
  2. Z28 won't start
    By flaggs_ls1 in forum General Help
    Replies: 4
    Last Post: 05-11-2008, 09:46 PM
  3. where to start?
    By Jane_says in forum Firebird / WS6
    Replies: 47
    Last Post: 02-25-2007, 09:14 PM
  4. Cold Start/Warm Start Problem
    By I'mLS1John in forum General Help
    Replies: 11
    Last Post: 02-23-2007, 08:11 PM
  5. Cold Start/Warm Start Problem
    By I'mLS1John in forum New Member Introductions
    Replies: 0
    Last Post: 02-22-2007, 06:26 PM

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
  •