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Date:         Sun, 12 Jul 2015 12:25:55 -0400
Reply-To:     john <john@JHL.MGACOXMAIL.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         john <john@JHL.MGACOXMAIL.COM>
Subject:      Re: ECU Testing
Comments: To: John Goubeaux <john@UCSB.EDU>
In-Reply-To:  <55A28AB7.60104@ucsb.edu>
Content-Type: text/plain; charset="UTF-8"

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 > >>> > >>>


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