Username or Email Address
Do you already have an account?
Forgot your password?
  • Log in or Sign up

    VWVortex


    Page 1 of 2 12 LastLast
    Results 1 to 35 of 51

    Thread: 1998 Jetta VR6- cranks no start

    1. 07-30-2012 05:33 PM #1
      Hello,
      I need help with my car, it cranks over but will not start. Tried starter fluid, but nothing, just cranks. My car has been sitting for about 6 months, it ran good before that. I purchased the latest software(Full version) from Ross-Tech, and ran "Auto-Scan"

      Only these codes came out:
      P1544 Angle sensor 1 for throttle actuator, Signal too large
      P0121 Throttle position sensor, Implausible signal

      Also, went into the "Engine" module and found these values:
      Thottle Pot Voltage 1 - 5.100 V
      Thottle Pot Voltage 2 - 5.100 V
      Operating Mode - Part Throttle
      Basic Settings Status - ERROR

      Not really sure what to do next, any help would be greatly appreciated.

      Thanks!

    2. 07-30-2012 05:42 PM #2
      i just posted a thread too.

      if my car sits for more than a day it will not start. i have to keep cranking it 10 or more times until it finally starts. then if i shut it off , itll start first shot.

      i read online it could be leaky injectors that floor the motor but mine are all brand new.

    3. Member dogyouare's Avatar
      Join Date
      Aug 9th, 2009
      Location
      Port Orange, FL
      Posts
      1,634
      Vehicles
      90 Jetta GL, 91 Corrado G60, 96 Golf GTI, 88 300SE
      07-30-2012 08:11 PM #3
      does ur tb make noise?

    4. 07-30-2012 08:19 PM #4
      When I turn on the ignition key(without trying to start), no noise at all. Thanks for the reply!

    5. 07-30-2012 09:06 PM #5
      Unhook the battery (both terminals) find the engine computer back behind the firewall and disconnect the harness. check for corrosion on the pins of the computer and on plug harness.

      I had issues similar to you and this was the problem. My car started right up. This is a good thing to check that costs no money. Just be careful and observant while doing this.

    6. Member masterqaz's Avatar
      Join Date
      Oct 4th, 2007
      Location
      Oakville Ont
      Posts
      2,758
      Vehicles
      New 04 pd100 Old setup 94 JTI Vrt 60-1 .58ar exh obd2 440 racefile 20psi/meth
      07-30-2012 11:30 PM #6
      do you have spark output when your having this issue.
      Coming soon 4dr pd golf on air dipped blue with hitch racks and skid. Real work horse
      Automatic cause shifting short ratio sucks

    7. Member 98GTI_VR6's Avatar
      Join Date
      Jan 21st, 2011
      Location
      Melbourne, FL
      Posts
      473
      Vehicles
      1998 VW GTI VR6
      07-31-2012 12:40 PM #7
      Get a new crank sensor

    8. Member masterqaz's Avatar
      Join Date
      Oct 4th, 2007
      Location
      Oakville Ont
      Posts
      2,758
      Vehicles
      New 04 pd100 Old setup 94 JTI Vrt 60-1 .58ar exh obd2 440 racefile 20psi/meth
      07-31-2012 07:07 PM #8
      what I was getting at
      Coming soon 4dr pd golf on air dipped blue with hitch racks and skid. Real work horse
      Automatic cause shifting short ratio sucks

    9. Member 98GTI_VR6's Avatar
      Join Date
      Jan 21st, 2011
      Location
      Melbourne, FL
      Posts
      473
      Vehicles
      1998 VW GTI VR6
      08-01-2012 04:15 PM #9
      Exactly, my car did exactly what is described a while back and I checked the coil pack it just wasn't being to what to do in Lamest terms and there for diddnt know that it was even cranking... Replace the crank sensor Ill put money on that fixes it

    10. 08-04-2012 03:14 PM #10
      Sorry for taking so long to respond. Heres what I have found so far:

      no spark(when cranking)
      ohmed out the crank sensor and I got 950 ohms at 2 contacts.
      no fuel to fuel rail when trying to start.(took both hoses off, and no fuel comes out.)
      Last edited by allegheny; 08-04-2012 at 04:28 PM.

    11. 08-04-2012 07:29 PM #11
      Update:

      I was verifying all my engine electrical connections, and found that the big round connector at the LH side of the valve cover was loose. Took it apart and used electrical cleaner, and compressed air, and reinstalled.

      Now the throttle body buzzes and my scan software can do a calibration, and it is OK with "Autoscan"= no errors, and no codes. Also, now I'm geetting fuel to the fuel rail. But, I still can't get a spark. Any thoughts.

      Thanks!

    12. 08-05-2012 02:14 PM #12
      Check the coil pack plug for power

    13. Member 98GTI_VR6's Avatar
      Join Date
      Jan 21st, 2011
      Location
      Melbourne, FL
      Posts
      473
      Vehicles
      1998 VW GTI VR6
      08-05-2012 07:12 PM #13
      I still say replace crank sensor or coil pack

    14. Member old_skool_jetta's Avatar
      Join Date
      Jul 19th, 2007
      Location
      In the 518
      Posts
      804
      Vehicles
      2000 Mk4 jetta.1999 Mk3 jetta, 1998 jetta glx, 1996 jetta gl,
      08-05-2012 10:39 PM #14
      Does the rpm gauge attempt to move at all while cranking the motor over, if not replace the crank sensor wire.. If the crank sensor wire is bad you will lose spark and fuel..
      I couldn't fix it, so I sixed it!!

      4 Doors 4 more whores

    15. Member kpn3nc's Avatar
      Join Date
      Jul 5th, 2008
      Location
      06776
      Posts
      949
      Vehicles
      91 t-red coupe, 90 alpine coupe
      08-06-2012 06:44 AM #15
      i would say don't replace anything yet. since you have ross-tech, go into the engine (01) then measuring blocks (08) and in the top group number put in 098 and hit go. it'll adapt your tb. let it do it and don't touch anything especially the gas pedal for 30 seconds at least.

    16. 08-06-2012 07:34 AM #16
      Yeah, I did that and the results were ADP-OK, and I here it buzz and see movement. I think I will replace my crank sensor, since my tach needle does'nt move when I crank the engine. Thanks again for all the help everyone.

    17. 08-06-2012 10:30 AM #17
      Did you check for power at the coil pack? Crank sensor sounds like its good since your getting fuel to the rail.

    18. Member masterqaz's Avatar
      Join Date
      Oct 4th, 2007
      Location
      Oakville Ont
      Posts
      2,758
      Vehicles
      New 04 pd100 Old setup 94 JTI Vrt 60-1 .58ar exh obd2 440 racefile 20psi/meth
      08-06-2012 01:51 PM #18
      Quote Originally Posted by brian500 View Post
      Did you check for power at the coil pack? Crank sensor sounds like its good since your getting fuel to the rail.
      Injector pulse width. Fuels gonna be present.
      Coming soon 4dr pd golf on air dipped blue with hitch racks and skid. Real work horse
      Automatic cause shifting short ratio sucks

    19. Member old_skool_jetta's Avatar
      Join Date
      Jul 19th, 2007
      Location
      In the 518
      Posts
      804
      Vehicles
      2000 Mk4 jetta.1999 Mk3 jetta, 1998 jetta glx, 1996 jetta gl,
      08-06-2012 05:23 PM #19
      check rpm movement
      I couldn't fix it, so I sixed it!!

      4 Doors 4 more whores

    20. 08-07-2012 06:31 PM #20
      OK, I installed a new crank sensor, and still no spark, and no movement of the tachometer. Also, I did check the coil pack's power connector(with ignition key on, but not cranking), and the black wire was 13.2v, the remaining connectors were 0.3 to 0.5v. Any suggestions?

    21. 08-07-2012 11:09 PM #21
      There a few things that will stop the car from sparking crank sensor, coil pack, wiring which i doubt if the harness hasnt been messed with, ign switch, and the ecu. Check for injector pluse just to see if the ecu is sending signal to the sensors.

    22. 08-09-2012 08:42 AM #22
      When trying to check for injector pulse, how do you access the fuel injectors electrical connectors? Their all covered by the intake manifold. Maybe I'm not checking the correct area for the test light? Thanks!

    23. 08-09-2012 09:53 AM #23
      If you look on the passenger side of the mani you can wiggle it out.

    24. Member 98GTI_VR6's Avatar
      Join Date
      Jan 21st, 2011
      Location
      Melbourne, FL
      Posts
      473
      Vehicles
      1998 VW GTI VR6
      08-09-2012 12:06 PM #24
      Could the car be in a anti theft mode? Something free to try is take battery out hold pos and neg terminals together for 30 seconds and then reinstall battery. unlock car with key on door then try and start it

    25. 08-10-2012 11:17 PM #25
      I tested my fuel injectors with my Ross-Tech software, I used "Output Test", and I could here the injectors all buzz. With my ignition on, I checked for voltage at fuse #18(fuel pump) and nothing. Could this mean my fuel pump relay is bad?

      Also, does my car use an ECU Relay #109, my fuse/relay panel location #3 is empty? Is this where my ECU Relay should be? Still no start, and no spark. Thanks!

    26. 08-10-2012 11:35 PM #26
      Your car is obd2 so you wont have an ecu relay. either you coil pack is shot or the ign switch is no good.

    27. Member 98GTI_VR6's Avatar
      Join Date
      Jan 21st, 2011
      Location
      Melbourne, FL
      Posts
      473
      Vehicles
      1998 VW GTI VR6
      08-11-2012 02:23 PM #27
      you already replaced crank sensor next in line is the coil pack then if that dont fix it id replace the ignition switch if it is the coil pack you should do the gm conversion its much cheaper

    28. Member 98GTI_VR6's Avatar
      Join Date
      Jan 21st, 2011
      Location
      Melbourne, FL
      Posts
      473
      Vehicles
      1998 VW GTI VR6
      08-11-2012 02:37 PM #28

    29. 08-11-2012 03:15 PM #29
      Dont bother with that gm crap

    30. Member rookdubdoc's Avatar
      Join Date
      May 1st, 2004
      Location
      Dam Beaver, Wiscownsin
      Posts
      3,489
      Vehicles
      CEO Yukon, 84 Basket Case
      08-11-2012 11:12 PM #30
      Interested in this as I have same issue. Mine ran beautiful as usual. Parked in garage. Two days later, cranks and no start. Checked ECU for corrosion, nothing. No fuel to motor. Tach doesn't move. Gonna try crank sensor. Then ignition. So if you get this figured out, post up.
      Quote Originally Posted by OGSDUB View Post
      13 years of parochial schools over here. Knowing me one would never figure that.

    31. Member 98GTI_VR6's Avatar
      Join Date
      Jan 21st, 2011
      Location
      Melbourne, FL
      Posts
      473
      Vehicles
      1998 VW GTI VR6
      08-12-2012 01:41 AM #31
      How about the ford crap lol it's cheaper

    32. 08-12-2012 09:21 AM #32
      I was checking the fuel pump relay(3 months old) and had Autozone check it, and it was bad. They ordered me one, and I will try it after work today. Hope this it! Will post after I install new fuel pump relay!

    33. 08-13-2012 08:36 AM #33
      Well, I installed the new fuel pump relay, and still no start, or spark. Used Auto-Scan and no codes. So, I looked at my Bentley repair manual to see the procedure for checking the coil pack power supply connector. It passed every test but one. That was where you measure Pin #5 and #2, and then #5 & #3, and #5 & #4, for a pulse voltage when cranking, and nothing! The manual said to replace the ECU. So this Thursday I should have an ECU(E-bay). Thanks again for all the help.

    34. 08-13-2012 10:05 AM #34
      Did you turn the motor over by hand before putting everything back together?

    35. 08-13-2012 12:46 PM #35
      No, I've only tried using the starter.

    Page 1 of 2 12 LastLast

    Posting Permissions

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