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  1. #1

    Unhappy won't start sometimes

    I own a 1990 celica gt hatchback and It has an intermittent starting problem.
    Lately since I had the dristirbutor replaced it won't start sometimes. It turns over fine but won't ignite.
    I wiggled all the electrical connections I could see when it won't start and it didn't make any difference.
    If I leave it for 5 to 10 minutes then it starts ok.
    Wierd.
    Someone said it could be the main relay but after reading some posts I was informed that the accesories won't work if that is the case and they do work I think. I seem to remmber turning the fan off because it wouldn't start to save on the battery. I know as an electrical engineer that relays may stick, specially if the coil kickback shunt diode is not working.
    Is there a way to check the relay easily?
    Anyone have any idea why this would happen?

  2. #2

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    Engine turns over and "sometimes" won't start? Only causes would be no ignition or no fuel (engine compression & timing are ruled out because sometimes it starts and runs fine, from what I could gather).

    Might want to find out which of these 2 possible causes it really is. Could be either. Fuel pressure would be the easiest to check in a no-start situation.

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