88, Knut is correct naturally, My 2 cents is: the coil he is talking about is in the distributor ( impulse coil ). I show it on my site. If it goes out, you will not be able to start the car unless you hot wire it.I know, I just installed a new one in my 11004. John Hervey www.specialTauto.com --- In dmcnews@xxxx, knut.s.grimsrud@xxxx wrote: > I think the problem stems from a little misunderstanding of the > operation of the RPM relay. > > The RPM relay receives an impulse from the coil (I suspect it's > the same signal driving the tach) that essentially informs it that the > engine is running. After the relay no longer sees any impulses, it > will shut off after a couple seconds in order to avoid running when > the engine is stopped. Although it is true that the relay will shut > off after a couple seconds, I don't think it's supposed to turn on > first unless presented with an impuse on its sense signal (first > spark when cranking). > > The RPM relay is actually pretty simple and it's based on a > run-o-the-mill 555 timer circuit (you can still get 555 timers at > Radio Shack even though they really only sell cell phones and > remote-controlled cars nowadays). > > Knut > > > > --- In dmcnews@xxxx, at88mph@xxxx wrote: > > > I'm not getting power to my fuel pump when I turn the key to the > 'run' > > position. (when the pump should run for two to three seconds and > then shut > > off ) I know that my RPM relay is fine. I tested it in another > DeLorean > > and it does work.