Yes my 92 is MPI, sorry I forgot to post year. I had just filled up about
about a mile from my house and it died in my driveway (lucky I know). The
first thing I did was change the external filter.
I probably should go ahead and buy a new pump and sock. Even if it turns out
to be some other electrical problem not powering the pump, the pump is due at
250K (and I already have access since the bed is off).
mm
>
> MM, okay, now it seems for sure that you have MPI. I wasn't sure before.
> When you first turn the key to the on position on any fuel injected vehicle,
> the relay is supposed to energize the pump for two seconds to put the
> correct pressure back into the line.
>
> Correct pressure for Mopar MPI is 44 to 49 pounds. I can't remember who told
> me this, but they said that MPI injectors require 26 psi to overcome the
> injector resistance.
>
> When the problem first came up, did you have at least eight gallons in the
> tank? Or about 11.7 gallons if it is a22 gallon tank. This will help
> eliminate the filter as the problem. By the way, the pump you get from NAPA
> comes with a new filter and sending unit. One little hangup, Daks around
> that time changed from return pumps to non-return pumps, make sure you know
> which system you have. Biff
> ----- Original Message -----
> From: <m.meyerhoff@mchsi.com>
> To: <dakota-truck@dakota-truck.net>
> Sent: Thursday, February 09, 2006 6:17 PM
> Subject: DML: Starting, Fuel Pressure ?
>
>
> >
> > Ok here is the latest. I provided direct 12v to the fuel pump. It spun
> up and once it got to pressure, it stopped making the whirling noise and
> went to a tick, tick, tick type noise.
> >
> > A mechanical FP guage hooked up to the test port read 20psi quickly and
> then slllooowwwllly climbed to 25psi. I'm supposed to be around 40psi?
> correct? ( with the pump powered and the regulator not seeing any engine
> vaccum? ) I'm thinking replace, right?
> >
> > But, I'm not sure if the wore 250K fuel pump is my problem, because I was
> getting O pressure while cranking. Unless maybe it just can't flow enough
> any more to make pressure with the injectors opening...
> >
> > I was getting spark. Can anything cause lack of power to the fuel system,
> but still have spark? (ASD and Fuel relays have been checked)
> >
> > Thanks guys
> > mm
> >
> >
> >
> >
> >
> >
> >
> > .
> > .
> > .------------------------------------------------------------------.
> > | Make your plans NOW to attend the National DML Meet in Colorado! |
> > | Date: July 15-23, 2006 - More info: http://meet.dakota-truck.net |
> > `------------------------------------------------------------------'
> >
> >
>
> .
> .
> .------------------------------------------------------------------.
> | Make your plans NOW to attend the National DML Meet in Colorado! |
> | Date: July 15-23, 2006 - More info: http://meet.dakota-truck.net |
> `------------------------------------------------------------------'
>
.
.
.------------------------------------------------------------------.
| Make your plans NOW to attend the National DML Meet in Colorado! |
| Date: July 15-23, 2006 - More info: http://meet.dakota-truck.net |
`------------------------------------------------------------------'
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