Unless the connector pins where the fuel-injection cable plugs into the
ECU are squeaky clean, ECU may not be reading correct voltages from the
sensors.

JL

On Sun, 2015-07-12 at 08:41 -0700, John Goubeaux wrote:
> Thanks for the feedback guys,
>
> So, ECU swap and start-up went fine. Idling was too high and car ran
> rich after the swap ....SO  while not a "brick" the ecu is NOT "good to
> go", but maybe good for a spare OR a core on a rebuilt one.
>
> I did get a "shoebox electronics" ECU monitor from the seller though,
> along with other used parts, a Throttle Body and  AFM
>
> -john
>
>
> On 7/10/15 4:44 PM, Jim Felder wrote:
> > Like most chipped stuff I have run across, maybe he chipped it out with a
> > hammer and chisel.
> >
> > Jim
> >
> > On Fri, Jul 10, 2015 at 6:39 PM, SDF ( aka ;jim lahey' - Scott ) <
> > scottdaniel@turbovans.com> wrote:
> >
> >> just make sure the ignition is off when you swap out the ecu.
> >>
> >> trying one out on a known-good-running engine is the only way to test
> >> one really.
> >> Extremely unlikely that a bad ecu could harm anything in the fuel
> >> injection.
> >>
> >> I'd just run the engine a few minutes.
> >> shut off, plug in the new ecu and start 'er back up.
> >> Ideally both ecu's will act exactly the same.
> >>
> >> I also like to *always* pre=run the fuel pump , especially on cold starts..
> >> that is , turn key on, listen for fuel pump to run and then shut off ,
> >> then start it.
> >>
> >> if it does that like it should, that's a good sign.
> >>
> >> One guy sold or gave me a 'chipped' 2.1 ecu ....
> >> on that one, turn key to on and the fuel pump will run forever....which
> >> is not right.
> >> It also didn't make any difference in power, that chipped ecu.
> >>
> >>
> >>
> >> On 7/10/2015 11:13 AM, John Goubeaux wrote:
> >>
> >>> Hi Guys,
> >>>
> >>> I have the chance to pickup another ECU, to use as a backup. The seller
> >>> claims it works BUT I want to confirm this. Can I assume that I can
> >>> fairly easily swap it out in the car and confirm that it DOES work ? Is
> >>> there anything I should be aware of  in doing this?
> >>>
> >>> Thanks  -john
> >>>
> >>>