730 ECM Swap

[Dave Zug]

We had used a couple of sta-con "fork" connectors soldered together to make
a jumper that fit exactly (you have to jumper 2 of the lines that are NOT
next to each other)
 Yep - makes for a much cleaner and quicker change-out.

MAP signal is sent into the cockpit thru the newly spare MAF wires, as
outlined in another post. very convenient to have correct male and female
connectors.

UUGH!  Dont go the pep boys route... can you imagine $10 for the
connector!?!   pair of snips at a junkyard can net you $100 worth of pep
boys equivalant for a few bucks.

Last TIP - get the KNOCK wire connector heads off the PILE OF PULLED MOTORS
at your local yard. They are still on the knock sensor cause the yard people
dont know how to get them off so they cut the wyre. - (mechanics ;-)  JK



----- Original Message -----
From: Zacek DenniS <bowtye8 at yahoo.com>
To: <gmecm at diy-efi.org>
Sent: Saturday, November 11, 2000 1:52 PM
Subject: Re: 730 ECM Swap


> The conversion harnesses are nice.  Here is another
> idea I did for the 7730 conversion.  I have no extra
> wires going thru my firewall.
> for the knock sensor..I unplugged my plug at teh ESC
> and installed a jumper from pin C to pin E. this gives
> a direct route to the knock sensor from the ecm.
>
> For the new map ecm sig.  I used a Dan white harness.
> basically it jump in between the TPS sensor. It grabs
> 5v and 5v return for the map.  Then for the main map
> sig I ran mine thru the center pin from the MAF(green)
> plug. this will give the ecm the map sig.
> The only other problem I encountered at first was
> scanner link.  The 7730 needs a pin E.  my 85(870) ecm
> only had one at pin m.  I just intaled a jumper there
> as well.
> My last stumble was the speedo for the ecm.  My dash
> worked fine but the ecm did not have any speed input.
> I has a manual tranny so it was not importtant for me
> but wanted a 100% working ecm. Mine vss went directly
> to the dash . the dash did a conversion from the ppm
> to a 0-5 v reading. this may not be exact but was not
> a ppm.  I had to tap right off the purple and yellow
> VSS wires right them to the ECM and the scan data MPH
> worked fine.
> The plugs for the map harness can be bought at any
> pepboys or autozone.  I can get a digital pic if
> somone wants to see it.
> Dennis
> --- Terry <thartman at fastlane.net> wrote:
> >
> > Please add me to your list as well - I'd like two as
> > well.
> >
> > thanks,
> >
> > T.
> >
> > > Dan Townsend wrote:
> > >
> > > I'm in.  Actually make that for two sets if the
> > price is that good :-)
> > >
> > > ----- Original Message -----
> > > From: WEG1192 at aol.com
> > >
> > > To anyone interested.
> > > I will build some 1227165 to 1227730 conversion
> > harness kits
> > > including all
> > > the parts and sell them at my cost plus shipping
> > to current members
> > > of the list. If I get enough orders, I can get a
> > cheaper price through
> > > quantity discounts. I'll post my quote from
> > Packard Electronics so you know
> > > what my cost is. I'll include a 165 pin to 730 pin
> > sheet to make wiring it
> > > easier. All you'll need to complete the kit is
> > some solder and 16ga
> > > automotive wire.
> > > I'll do this as a contribution back to the list
> > for all the help
> > > I've recieved. I imagine all the parts can be
> > purchased for $10-$15 plus
> > > shipping  but don't hold me to this.
> > >  JW
> >
> > ----- End of forwarded message from
> > owner-gmecm at diy-efi.org -----
> >
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>
> =====
> Dennis Zacek
> http://geocities.com/bowtie8
>
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