won't restart until engine cools down

Discussion in 'Gen 1 & 2 - Emergency Issues - Help & Maintenance' started by Craig, Jan 11, 2020.

  1. BaySHO Performance

    BaySHO Performance SHO Member

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    Yes, nothing to do with the crank sensor which would throw a code 14 if bad. Any problem with it would cause the engine to die while running. The cam sensor code 19 will also not be the problem of the starter having difficulty turning the engine over, although it does need replacing, along with the seal behind it. There are no codes for the starter or starter solenoid.

    The DIS module is grounded via the two bottom bolts, one of which is missing. I suggest transferring one of the top bolts to the bottom. 7/32" socket. Apply new heat sink grease to the back of it.

    This is either a problem with the starter motor (as opposed to the solenoid), and / or vapor lock in the fuel rails. SHOs are known to have hot start issues because of this. Per Rubydist, the trick is to give the car plenty of gas while attempting to start it.

    However, the starter won't turn the engine over when hot. It and the battery are less than a year old. What may be happening is that the starter isn't getting enough cranking amps to turn the engine over. Things to look at are the connections at the battery, starter solenoid and starter itself to make sure they are clean and tight. And have the mechanic check the voltage at the battery engine running. Should be between 13.5-14.5 volts. If lower, maybe the alternator is on the way out. Might also be an idea to load test the battery just for jollies.

    What is the CCA (Cold Cranking Amps) of the battery, and make and model?
     
    SHOdded likes this.
  2. Craig

    Craig Member

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    Hello again. This update is to say it was the starter solenoid. Thanks for the help.
     
    blk\blk90, SHOdded and luigisho like this.
  3. BaySHO Performance

    BaySHO Performance SHO Member

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    That is really weird. The solenoid on the 89 is bolted to the fender, well away from any heat source. Unless there's a Gen 2 starter in there with the integrated solenoid.
     
  4. Craig

    Craig Member

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    Maybe I'm misinterpreting what happened. It is a GEN 1 starter. It does start now consistently without cooling down. Whereas before, after getting hot, I would turn it off and it would not crank until the temperature gauge indicated the engine had cooled off. I'm still watching it. Thanks for suggestions. I'll pass them on to my mechanic.
    I'll get back with the battery information. My car is not at home today. Having a small interior job done. They said it was the battery for the car and I got it at O'Riellys.
     
  5. luigisho

    luigisho SHO Member

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    Just to be clear, the early SHO's had a starter solenoid separate from the starter itself. Most modern starters have the solenoid integrated with the starter motor. Look at the pic and enlarge it on this page you can see the solenoid along the driver fender just after the air intake box. It's shiny black with wiring coming off of it.
    https://wikivisually.com/wiki/Ford_Taurus_SHO If you google the starter solenoid for your year car a small part will pop up.

    This is an integrated one from later year SHO's. People have found a way to use the combined unit on the older cars but the original set up for your car has the solenoid mounted all the way up under the hood.

    [​IMG]
     

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