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Timing a '91 245 200

posted by  I-5 Librarian on  Wed Aug 16 21:58 CST 2017
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I'm starting a road trip on Saturday and wanted to check the timing on my 245. It seems to me that the acceleration is a bit sluggish. Anyway, I got out a timing light after checking the manual so I could see if the timing was set at 12 degrees BTDC for cylinder #1. Facing the flywheel pulley, I saw that the timing was set to the mark farthest to the right. I tried to loosen the bolt holding the distributor so that I could turn it, but it was very tight. I put some force into it...Then it popped loose. However, I could not turn the body of the distributor more than about 1/8th of an inch. the bolt was loose, but the distributor seems to be stuck, and the clamp bolt won't tighten, it turns uselessly. I'm confused as to what is going on. Did I break the bolt off above the place where it clamps the distributor in place?








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    Timing a '91 245 200 1991

    uid 27's pic
    posted by  Art Benstein on  Thu Aug 17 06:13 CST 2017
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    last visit: Fri Oct 17 20:10 CST 2014
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    Timing is not adjustable at the distributor. If you remove the plastic locator in the distributor mounting and turn it, you can cause ignition failure under load, so don't.

    When you view the marks on the timing cover, get a good look. Zero is not on the same plane with the other marks. And be aware, the mark on the outer surface of the crank pulley can slip if the rubber in the vibration damper has shrunk. EZ116K ignition gets its timing reference from the crankshaft and is completely under firmware control.
    --
    Art Benstein near Baltimore

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    Timing a '91 245 200

    uid 33936's pic
    posted by  TheBrickTank on  Thu Aug 17 03:50 CST 2017
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    My understanding is with the introduction in 1989 of the LH2.4 fuel injection, which yours is, that there was no need to set the timing any longer at the distributor.

    Just my 2 cents.

    Matt








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      Timing a '91 245 200

      posted by  boxvolvo on  Thu Aug 17 06:11 CST 2017
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      Not only is there no need to adjust timing on the 2.4, there is no ability to do so. Timing is controlled by the computers, which take in data from a variety of sensors, then advance or retard timing as appropriate.







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        Timing a '91 245 200

        posted by  I-5 Librarian on  Thu Aug 17 18:55 CST 2017
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        Wow. Thanks for setting me straight on this. I have a lot to learn about these cars.








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          Timing a '91 245 200

          posted by  someone claiming to be CB on  Fri Aug 18 03:56 CST 2017 [RELATED]

          Read ...LOL

          the last year you cud adjust the timing with the distributor the 1988 Model. The Volvo/Chrysler ignition system with a Hall Sensor inside the Distributor.

          Before that was the Bosch Breakerless Ignition System, with an Inductor in the distributor.
          Before that: points and condensor. But I digress.

          In the 89 and forward, the pulse-timing is read by the computer from the CPS --- The Crank Position Sensor. It takes a pulse off a node on the flywheel and sends it--via the computer--to the distrib.

          The Distributor - 89 on, has no functional "guts" just the Rotor that sends the spark to the cap's 4 copper nodes.

          What you have, it is not possible to physically alter the timing.






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