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  • is the service engine soon light

    Is the ses light programmed to come on if any of the sensors in the motor are unplugged. I think my ecm is going bad. I know the light works with the ignition on. My speedo reads about 5 mph off the tach is a little slow showing engine revs and my temp gauge keeps pegging but the car is not over heating. I even changed clusters thinking my original was bad with no improvement. Now the car won't stay running.

  • #2
    Re: is the service engine soon light

    yes if a sensor is unplugged the SES light would come on once the pcm ran its tests and noticed an error. Sometimes the tests may take a few key turns to happen, but at some point the light would come on
    http://www.bowtiev6.com/

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