Page 2 of 7 FirstFirst 123456 ... LastLast
Results 21 to 40 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; What was the ohm reading on the chip in your key?...

  1. #21
    Super Moderator
    pajeff02's Avatar
    Join Date
    Feb 2009
    Location
    Mansfield, PA
    Posts
    21,567

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

    What was the ohm reading on the chip in your key?

  2. #22
    Junior Member
    Join Date
    Dec 2010
    Location
    St. Louis
    Posts
    7

    Pewter
    2000 Corvette Conv

    I've got a 2000 LS1 with no mods. It wont cold start. Did you notice if on previous cold starts if there was any hesitation? This happend to me over a period of 3 days. Each time it was harder to cold start and now will not start. I assumed a fuel system. But not sure where to start. This came on fast! Any advise?

    Thanks
    Bob

  3. #23
    Veteran 0rion's Avatar
    Join Date
    Aug 2005
    Location
    ohio
    Posts
    22,519

    98 Formula
    06 duramax

    Quote Originally Posted by rkrbaker View Post
    I've got a 2000 LS1 with no mods. It wont cold start. Did you notice if on previous cold starts if there was any hesitation? This happend to me over a period of 3 days. Each time it was harder to cold start and now will not start. I assumed a fuel system. But not sure where to start. This came on fast! Any advise?

    Thanks
    Bob
    try turning your key to run and back off without starting the car twice before starting. If it starts right up that means you either have a hole in the hose going from the sock to the pump or your pressure regulator has taken a dump.

  4. #24
    Veteran 0rion's Avatar
    Join Date
    Aug 2005
    Location
    ohio
    Posts
    22,519

    98 Formula
    06 duramax

    Quote Originally Posted by blackcar View Post
    No spare key. I got the resistor I needed yesterday and stuck it in. Still wouldn't start. It was dark and I was in a hurry, so I will try it again.

    I bought HPTuners years ago with the intent of learning how to use it and tuning on my first Camaro. Hooked it up one time and changed the fan settings and long story short got busy with life and never used it again. I guess it is time to dig it out and learn how to use it. Any tips would be greatly appreciated.

    It will probably be this weekend before I can get back out there to it.
    even though hptuners is a good diagnostic tool you're still going to have to trouble shoot it the old fashioned way. Verify fuel pressure, check for spark, ect ect. "shooting fuel to the bumper" isn't the right way to check fuel pressure. You can get a gauge for $20 or less. I've seen 2psi keep a truck I had from starting. I would probably buy a spark tester while I was there.

  5. #25
    Junior Member
    Join Date
    Dec 2010
    Location
    St. Louis
    Posts
    7

    Pewter
    2000 Corvette Conv

    Quote Originally Posted by 0rion View Post
    try turning your key to run and back off without starting the car twice before starting. If it starts right up that means you either have a hole in the hose going from the sock to the pump or your pressure regulator has taken a dump.
    It did not start. What is different during a cold start vs when it is warm? When it warm it fires right up. Or at least it did. I did not hear the fuel pump fire up when I turned the keys. I'll check the fuse. However, if it is the fuse this time does not explane the sluggish starts prior. Maybe the pump was going bad and the current draw was getting larger.

    Thanks,
    Bob

  6. #26
    Junior Member
    Join Date
    Dec 2010
    Location
    St. Louis
    Posts
    7

    Pewter
    2000 Corvette Conv

    Quote Originally Posted by rkrbaker View Post
    It did not start. What is different during a cold start vs when it is warm? When it warm it fires right up. Or at least it did. I did not hear the fuel pump fire up when I turned the keys. I'll check the fuse. However, if it is the fuse this time does not explane the sluggish starts prior. Maybe the pump was going bad and the current draw was getting larger.

    Thanks,
    Bob
    Also I wish I could type. lol

  7. #27
    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
    What was the ohm reading on the chip in your key?
    On my cheap multimeter it fluctuated from around 4,700 - 4,800. So according to the chart I need 4750. Our radio shack had a 4700.

    Quote Originally Posted by 0rion View Post
    even though hptuners is a good diagnostic tool you're still going to have to trouble shoot it the old fashioned way. Verify fuel pressure, check for spark, ect ect. "shooting fuel to the bumper" isn't the right way to check fuel pressure. You can get a gauge for $20 or less. I've seen 2psi keep a truck I had from starting. I would probably buy a spark tester while I was there.

    I understand what you mean on the fuel preasure. But right now the car is not telling the fuel pump to even come on. The only way I got it to come on was put a jumper over the relay. The ignition relay is getting a signal to come on and I've switched that relay with the starter relay, so I assume that is working. I've got to do some more checking but right now I don't think I'm getting a spark either.

  8. #28
    Member blackcar's Avatar
    Join Date
    Oct 2005
    Location
    Arkansas
    Posts
    1,234

    2000 Camaro SS
    '02 Z28 parting-out

    Been almost a month and haven't had a chance to get the thing running. I'm really starting to miss it and I want to hear the open headers. I was going to get out there the weekend after my last post and see if I could get it lined out, but I broke my hand that Saturday. The following week the little time I have after work I spent getting ready for our vacation. Then left out the Saturday before Memorial day for vacation. Just got back Sunday. Of course while getting ready to go on vacation the washing machine took a dump. I've got the parts ordered to fix it and I'm really hoping they do not come in untill next week. That way I can spend the weekend getting the car running (one handed). I'm going to get out there tonight and at least check for spark.

  9. #29
    Super Moderator
    pajeff02's Avatar
    Join Date
    Feb 2009
    Location
    Mansfield, PA
    Posts
    21,567

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

    Any luck tonight? Sounds like you made it through your 3 bads in a row -- you should be good to go now.

  10. #30
    Junior Member
    Join Date
    May 2012
    Location
    New Orleans
    Posts
    52

    red
    1998 trans am

    Did u check the PCM fuses

    You should check the fuses for the computer I think there are two of them one may be blown
    Quote Originally Posted by blackcar View Post
    Been almost a month and haven't had a chance to get the thing running. I'm really starting to miss it and I want to hear the open headers. I was going to get out there the weekend after my last post and see if I could get it lined out, but I broke my hand that Saturday. The following week the little time I have after work I spent getting ready for our vacation. Then left out the Saturday before Memorial day for vacation. Just got back Sunday. Of course while getting ready to go on vacation the washing machine took a dump. I've got the parts ordered to fix it and I'm really hoping they do not come in untill next week. That way I can spend the weekend getting the car running (one handed). I'm going to get out there tonight and at least check for spark.

  11. #31
    Member blackcar's Avatar
    Join Date
    Oct 2005
    Location
    Arkansas
    Posts
    1,234

    2000 Camaro SS
    '02 Z28 parting-out

    Didn't get a chance to get out there Thursday or any over the weekend. Things have just been busy.

    Quote Originally Posted by bvar20 View Post
    You should check the fuses for the computer I think there are two of them one may be blown
    I have checked every fuse in the tow boxes under the hood and the one just inside the door. By both looking at them and with a volt meter.

  12. #32
    Senior Member JayTA98's Avatar
    Join Date
    Dec 2007
    Location
    Orlando, FL
    Posts
    3,351

    Mean Black
    1998 Trans Am

    I know you are working on the checking the VATS. It could be part of the issue. I tried to see if I can bypass the fuel relay and the starter relay to start the car. The purpose of this was to see if i can override VATS in case the whole module takes a dump and leaves me stranded. unless VATS reads the key resistor the car can crank but it will never start. I can hear the fuel pump running when i bypass the relay prior to start cranking the car. I tried almost every way to bypass the relays and if VATS don't read the correct resistor the car won't start.

    But like others have mentioned get a fuel pressure guage and read the pressure when you are bypassing the relay.

    you said you were getting 8 volts at the fuel pump harness. It sounds like you have a corroded wire somewhere. did you check 12v at the actual wire or at the end of the electrical plug? I had a car with a bad electrical plug at the fuel pump. It looked fine but no voltage at the plug. When i stick the voltmeter prong in the wire before it goes in the plug it read 12v. Replaced the plug and it worked.
    Last edited by JayTA98; 06-14-2012 at 07:35 AM.

  13. #33
    Member blackcar's Avatar
    Join Date
    Oct 2005
    Location
    Arkansas
    Posts
    1,234

    2000 Camaro SS
    '02 Z28 parting-out

    Had a little time to get out there over the weekend. Reset the PCM (should of done that first). The security light went off. Tired to start it and it wouldn't even turn over and the security light started blinking. Put the resitor in and did the VATS bypass. Security light went off, car will turn over but still won't start. The fuel pump is still not coming on but works when relay is by passed. Tried to hook my HPTuners up and it can not find VCM. My car has not run in over 6 months and I'm running out of ideas. What's the next step???

  14. #34
    Member blackcar's Avatar
    Join Date
    Oct 2005
    Location
    Arkansas
    Posts
    1,234

    2000 Camaro SS
    '02 Z28 parting-out

    Quote Originally Posted by JayTA98 View Post
    I know you are working on the checking the VATS. It could be part of the issue. I tried to see if I can bypass the fuel relay and the starter relay to start the car. The purpose of this was to see if i can override VATS in case the whole module takes a dump and leaves me stranded. unless VATS reads the key resistor the car can crank but it will never start. I can hear the fuel pump running when i bypass the relay prior to start cranking the car. I tried almost every way to bypass the relays and if VATS don't read the correct resistor the car won't start.

    But like others have mentioned get a fuel pressure guage and read the pressure when you are bypassing the relay.

    you said you were getting 8 volts at the fuel pump harness. It sounds like you have a corroded wire somewhere. did you check 12v at the actual wire or at the end of the electrical plug? I had a car with a bad electrical plug at the fuel pump. It looked fine but no voltage at the plug. When i stick the voltmeter prong in the wire before it goes in the plug it read 12v. Replaced the plug and it worked.
    The 8 volts I was getting was at the relay. I think it was the wire to tell the relay to kick in.

    I put a jumper in on the fuel pump relay and the pump kicked on. Tried to start the car with the jumper in and no go. Where I put the jumper should have been the constant hot and the one that goes to the pump. The other two pins should be ground and the signal, right?? Both of them read 0 with the key off, but read 8 volts with the key on.

  15. #35
    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

    Pull the pump relay again and look down inside it's socket.

    Check for melting, and/or corrosion.

    Also see if the connectors that attach to the relay are still intact and did'nt push out the bottom of the box also.

  16. #36
    Member blackcar's Avatar
    Join Date
    Oct 2005
    Location
    Arkansas
    Posts
    1,234

    2000 Camaro SS
    '02 Z28 parting-out

    Quote Originally Posted by Smittro View Post
    Pull the pump relay again and look down inside it's socket.

    Check for melting, and/or corrosion.

    Also see if the connectors that attach to the relay are still intact and did'nt push out the bottom of the box also.
    I'm gonna double check that. I also plann on getting the battery load tested. I don't think that is the problem but I've run out of ideas.

    Anyone know why me HPTunes can not connect to the VCM????

  17. #37
    Member blackcar's Avatar
    Join Date
    Oct 2005
    Location
    Arkansas
    Posts
    1,234

    2000 Camaro SS
    '02 Z28 parting-out

    Quote Originally Posted by Smittro View Post
    Pull the pump relay again and look down inside it's socket.

    Check for melting, and/or corrosion.

    Also see if the connectors that attach to the relay are still intact and did'nt push out the bottom of the box also.
    I'm gonna double check that. I'm also going to get the batery load tested. I don't think that is the problem but I've run out of ideas.

    Also why won't hptuners connect to vcm???? This is the first time to connect to this car if that makes a difference.

  18. #38
    Super Moderator
    pajeff02's Avatar
    Join Date
    Feb 2009
    Location
    Mansfield, PA
    Posts
    21,567

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

    You should be able to scan, but need to license the VIN with your HPTuners to do anything else. Did you buy credits?

  19. #39
    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
    You should be able to scan, but need to license the VIN with your HPTuners to do anything else. Did you buy credits?
    I bought the HPT years ago. When I logon to there website now it says I have 8 gm credits. Is there somewhere I need to tell it the vin before it will hook up to my current car??

  20. #40
    Super Moderator
    pajeff02's Avatar
    Join Date
    Feb 2009
    Location
    Mansfield, PA
    Posts
    21,567

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

    Been a while since I have used mine. Load up VCM Scanner and click "Read Entire" if I recall correctly.

Page 2 of 7 FirstFirst 123456 ... 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
  •