Re: RE: RE: Engine cranks but not fire on 1999 5.2l PIA

From: Bob Tom (tigers@bserv.com)
Date: Mon Jul 23 2001 - 21:28:51 EDT


At 08:31 PM 7/23/01 -0400, you wrote:

>It's beginning to sound like there is a specific low voltage point below
>which, the computer will not initialize. And the battery may have enough
>capacity to keep the starter engaged and turning below this "cutoff"
>voltage. In this situation the truck would never start because the 'puter is
>"off".
>I'm guessing that this would be below 11 volts. The output of a fully
>charged, well maintained battery will drop below 12 volts after ten seconds
>(more or less) of cranking.
>Any other guesses? :)

I've read of around 9 volts on other ecm systems. The only thing definitive
on our pcms that I've read so far is that the asd relay will shut off the
fuel/ignition
systems if the pcm does not detect a crankshaft sensor signal within 3 seconds
of cranking.

Bob Tom Burlington, Ont., Canada
'97 Dakota Sport, 4x2, CC, Flame red, 5.2L, auto., 3.92SG



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