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Thread: Car has quit running ....

  1. #1
    Senior Member
    Join Date:  May 2011

    Location:  kansas city

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    Car has quit running ....

    I just had my car at a cruise this morn .. drove and started perfectly fine.. went to start it a bit ago and move it to clean the wheels for a show tommorow.. and it wont start.. the pump is not running even with jumping it.. and there is only 4 volts at the harness.... .and suggestions?? i just put a new rpm relay in it last week ..

  2. #2
    Senior Member
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    Put the original RPM relay back in and see what happens.
    Ron

  3. #3
    Senior Member
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    will do

    but it is not even running the pump by jumping the connectors and it should

  4. #4
    Senior Member
    Join Date:  Jun 2011

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    Check your ballast resistor connections.


    Sept. 81, auto, black interior

  5. #5
    Member
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    Location:  Wisconsin

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    Some of the obvious things to check: how is the ground connection, and check the inertia switch.

    What voltage do you get when you probe the harness pins with a DMM to a good ground? This will give you a start on which side of the harness to start your search (ground vs +12v).

  6. #6
    Senior Member
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    fixed it!!

    the problem was the ground for the inertia switch had vibrated loose .. i regrounded it to the frame front extension where the horns bolt.. might move it elsewhere this winter....but fixed for now...lol.. and actually got to go to a show i had registered for today!!

  7. #7
    Senior Member
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    Good work! Glad you made the show.
    Ron

  8. #8
    Senior Member 82DMC12's Avatar
    Join Date:  May 2011

    Location:  Olathe, KS

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    Dave or anyone else - where exactly does the RPM relay ground to, originally? Does it go to the front frame extension under the D/S radiator support?
    VIN 11596 Jan 1982 build - owned since Nov. 2000!

    Photography and Backpacking is life.

    Was Fargo, ND
    Now Olathe, KS

  9. #9
    Senior Member
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    Quote Originally Posted by 82DMC12 View Post
    Dave or anyone else - where exactly does the RPM relay ground to, originally? Does it go to the front frame extension under the D/S radiator support?
    I've just been through this. There is a main ground near the fuse/relay compartment. You have to remove the back board to get at it. I'm talking about the vertical board. (Not the compartment cover) There are a main ground (and power) post back there. They go through the firewall. The ground one goes front to back. The power goes left to right. They come out in the engine compartment under the coil cover.

    I ran a new heavy guage wire from the post out into the fuse area. That way, if I ever need a good ground for testing or whatever, I don't have to pull that board.

  10. #10
    Senior Member Bitsyncmaster's Avatar
    Join Date:  May 2011

    Location:  Leonardtown, MD

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    Quote Originally Posted by 82DMC12 View Post
    Dave or anyone else - where exactly does the RPM relay ground to, originally? Does it go to the front frame extension under the D/S radiator support?
    From memory, the RPM relay and a few other relays in the back row share a ground wire running back to that ground post. So not many have found that daisy change to act up. I did have one customer have problems with my RPM relay and he installed a separate ground wire which cured his that problem.
    Dave M vin 03572
    http://dm-eng.weebly.com/

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