2.5 turbo 87 labaron won't start

Discussion in 'General Motoring' started by Mike Merrick, Sep 10, 2003.

  1. Mike Merrick

    Mike Merrick Guest

    Having trouble get 87 2.5 turbo to start. The computer is new, the
    distributor is new, coil is new. Have fuel pressure but do not have any
    spark. No codes show up. It ran fine then just died one day. The timing
    belt looks ok. I an unable to get any spark at all and when you check
    positive side of the coil, it is dead. I have checked all vaccum lines and

    I am at a loss where else to look.
    Thanks for any input.

    Mike Merrick, Sep 10, 2003
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  2. Mike Merrick

    Bill Putney Guest

    As in, no +12V to the coil? If so, that should be a big clue to the
    problem. Trace the +12V and find out where it stops (do you have a
    vehicle electrical schematic?).

    Bill Putney
    (to reply by e-mail, replace the last letter of the alphabet in my
    address with "x")
    Bill Putney, Sep 10, 2003
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  3. Checking the positive side of the coil is not as simple on this car as it
    used to be before engine control computers came along. You can't just turn
    the ignition switch to "On", put a voltmeter to the positive primary coil
    wire and expect to find +12V.

    If you have no spark, it's probably because the computer isn't turning on
    the Auto Shutdown relay, and it's probably not doing that because it
    probably doesn't see a distributor signal, and it probably doesn't see
    that because the hall effect pickup in the distributor is probably dead.

    To check, disconnect the battery (either remove the negative cable
    terminal or pull apart the plastic disconnect in the positive cable) for
    about 2 minutes. Reconnect, attempt to start the engine, and check the
    codes. If you see a code 11, put in a hall effect pickup assembly.

    Daniel J Stern, Sep 10, 2003
  4. Mike Merrick

    Mike Merrick Guest

    I put a new hall effect sender in it when I put in the new distributer. The
    only difference was the old unit had 2 wires coming from it and the new one
    has only one.
    Mike Merrick, Sep 11, 2003
  5. Mike Merrick

    Neil Nelson Guest

    They sold you the wrong Hall Effect sensor.

    Turbo engined vehicles have to have the dual Hall sensor, no
    way in hell it will run with the single distributor pick up.

    When you order parts, you need to make it perfectly clear
    that your engine is a turbo otherwise you'll wind up getting
    the wrong parts like the Hall Effect sensor, MAP sensors,
    Neil Nelson, Sep 11, 2003
  6. And when was that? Before or after it first wouldn't start?

    Daniel J Stern, Sep 11, 2003
  7. Ah. Well, then. You're missing a wire. More specifically, you've got the
    wrong pickup assembly.

    Daniel J Stern, Sep 11, 2003
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