Won't start, no spark, no codes



ChryslerMiniVan.net is the premier Chrysler Minivan Forum on the internet. Registered Users do not see the above ads.
+ Reply to Thread
Results 1 to 5 of 5

Thread: Won't start, no spark, no codes

  1. #1
    Join Date
    Jul 2010
    Posts
    2
    Country: Users Country Flag
    Thanks
    0
    Thanked 0 Times in 0 Posts


    Won't start, no spark, no codes

    I have a 1996 Plymouth Grand Voyager 3.3 with ~120k mi that shut off while driving and will not start back up. It will turn over, but not start. no codes are shown, checked all fuses and relays, changed coil pack, crank sensor, cam sensor. still no spark
    took it to the chrysler dealership and they told me that both computers needed replaced for $1800. I only paid $1150 for the van. I was leaning towards the PCM or a corroded wire, but I am uncertain. Any ideas as to what it may be?

    the starter worked intermittently before this, sometimes the van would shut off while driving, but would always start back up(happened about 3 times) and I have a leak at the top of the end cap of the radiator. ac compressor was removed and replaced with a pulley

  2. Remove Advertisements
    Chrysler Minivan Forums
    Advertisements
     

  3. #2
    Join Date
    Jun 2009
    Location
    St. Cloud, MN
    Posts
    1,655
    Country: Users Country Flag
    Thanks
    91
    Thanked 286 Times in 236 Posts


    Have you checked for bad grounds? That could produce intermittent problems, leading to a hard failure. Easiest and cheapest thing to try first.

    My mom's 94 GC 3.8 started doing the same thing, until it stranded her one day. We tried both cam and crank sensors, and got nothing. Spent $40 on a used engine computer from a nearby junkyard, and that was what it needed! It's been running great ever since (2-3 years now).

    If you look for a junkyard computer, match as many things as you can (engine, transmission, year, with A/C, etc.). Mileage and interior features are tied in to the Body Control Module, so not as important. Good luck!
    DAN(husband of member STEPHANIE)

    2000 Chrysler Town & Country Limited - Dark Charcoal Metallic with chrome trim, taupe leather interior, loaded. In need of rust repair on rockers and liftgate. Now enjoying the new family mommy-mobile!

    Knowledge can never be wisdom without experience.
    "Your experience is a commodity."
    "Opportunity is not a lengthy visitor."
    DRIVE = LOVE

  4. #3
    Join Date
    Apr 2007
    Location
    Southwest
    Posts
    4,412
    Country: Users Country Flag
    Thanks
    97
    Thanked 350 Times in 299 Posts


    Check for power to the coil from the PCM at the 4 pin coil connector using a test light. Don't touch the dark green/orange wire to ground. As the engine cranks the light should flash. If none flash the coil drivers in the PCM aren't supplying power to the coil. One reason could be the ASD circuit is denergised because the PCM isn't seeing the cam or crank signal. To confirm check for power at either O2 sensor. If there's no power it confirms the ASD relay is denergised. Check cam and crank sensor wire continuity and reference voltage. If there is power at the O2 sensor but the coil has no power, it's likely a bad PCM unless you have an open wire or corroded connection - your suspision.

    You can get rebuilt PCMs for $250 - $350 at several web sources. Autozone has them for about the same.
    Last edited by RIP; 05-11-2011 at 09:35 PM.
    ******** We took the time to answer your post. Please give us some time and post the fix. You'll help hundreds. ********

    **** Follow all prescribed safety procedures before attempting any repairs. If in doubt, refer to a maintenance manual. ****

    96 Gr Caravan LE 3.8, 206K miles
    07 Fusion / 06 RAV 4 / 06 Accord / 94 Camry

  5. The Following User Says Thank You to RIP For This Useful Post:

    dun4now (06-05-2011)

  6. #4
    Join Date
    May 2007
    Location
    Portsmouth, VA
    Posts
    4
    Country: Users Country Flag
    Thanks
    0
    Thanked 0 Times in 0 Posts


    Not to hijack 2XTURBO's thread (1996 3.3L), but this all sounds a lot like the problem I'm having on my 1999 3.8L T&C, 200K+ miles. The engine died while driving and won't restart. No spark and no fuel pressure at the rail. I can hear the fuel pump start when key is turned to run. Primary and secondary coil resistances okay. Signal from PCM at coil pack is normal for two of the three pins, but the pin for cylinders 2 & 5 has a constant ground whether key is on or off. ASD and fuel relays both check out as good. I get a very tiny voltage (<0.5 mV) from the Green/Orange wire to the coil when key is in run position. Shouldn't this be 12 volts? I'm not familiar with how to check the cam position and crank position sensors. Could use advice on that. Haven't checked power to the O2 sensor, but good idea. I'm thinking either one of these sensors (Cam or Crank) could be causing the PCM to shut down both the spark and fuel, but that doesn't explain the constant ground. Can anybody confirm this? I'd like to be a little more sure I haven't missed anything before putting the money into rebuilding the PCM.

    Other info - Initial OBDII scan gave 0300 and 0301 codes (general misfires and cylinder #1 misfire), but second scan later on returned no codes. ????

    Thanks RIP for your expertise. I can't figure out how to officially thank you, but if you tell me how, I'd gladly do it.
    Mack
    2003 Grand Caravan
    1999 Town & Country

  7. #5
    Join Date
    Jul 2008
    Posts
    67
    Thanks
    0
    Thanked 1 Time in 1 Post


    Rip, when you say PCM, are you referring to what Autozone calls the Engine Control Computer? I replaced mine without success. I suspect a water issue causing a sensor to short out and send a shutdown signal to the ECC. My van just dies at freeway speed.

+ Reply to Thread

Tags for this Thread

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