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----- Original Message -----
From: "Electric Blue auto convertions" <xxx@xxx.xxx>
To: "ev" <xxx@xxx.xxx.edu>
Sent: Thursday, November 19, 2009 9:49 AM
Subject: [EVDL] ev computers??


>
>
> Since I have been doing conversions the only thing I found out about the
> cars ICE, ECM is that it drives the speed-0, thats all its used for when
> you take out the ICE, the ECM has no more duties to do except the speedo,
> when Im done with the conversion i cut all the wireing while the car is
> running in gear and keeping an eye on the speed-o one set of wires at a
> time.

Yeah! Worked for ME, too. I snipped one wire at a time, checking all the
Jettas vital stuff; silly things like lights, signals , tail and Brake
applied lites. Got RID of the computer box and seemingly MILES of loose end
wiring!Jeddi have speedo CABLES, Still! On the S-10, we KEPT that aluminum
box mounted on the trux's right side fenderwell, as the SPEEDO worked when I
grounded THAT! We found ONE of the loose grounds floating around in the ICE
wiring. Mike can prune as he goes, I got the "Essentials" working! you can
DRIVE the truk and everything WORKS! Especially the Plaintive "Service
Engine" light! Engine is PROBABLY on the way to China, by now?No Traking no?

> When im done all i have is the speedo wireing to the ECM and some 12 volt
> inputs and grounds ABS uses a seperate ECM.

I GUESS most cars sorta work the same?
>
> Air bags dont use a ECM, its on impact switching and relays REMEMBER !!!!!
> keep it simple, just make it work,
>
> dont try and reinvent the wheel wayne ev-blue.com

Try NOT to, just turn the one's I got!

Bob

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[EVDL List]

Wayne -

Not all cars use the engine computer (ECM) to drive the speedo. On my
Toyota Echo conversion ( 2001, but I think they're all the same, including
Scion A's and B's and Yaris's) the speedometer is controlled by the dash
display. I removed the ECM and the speedo works fine. The engine computer
apparently did nothing but control the engine. The airbags have their own
computer which is not connected in any way to the ECM.

Also, I found that having a copy of the manufacturer's wiring diagram (
actually a 100+ page book) helped tremendously. I didn't have to blindly
cut any wires and hope for the best.

Phil Marino
Rochester, NY

On Thu, Nov 19, 2009 at 9:49 AM, Electric Blue auto convertions <
[quote]xxx@xxx.xxx> wrote:

>
>
> Since I have been doing conversions the only thing I found out about the
> cars ICE, ECM is that it drives the speed-0, thats all its used for when you
> take out the ICE, the ECM has no more duties to do except the speedo, when
> Im done with the conversion i cut all the wireing while the car is running
> in gear and keeping an eye on the speed-o one set of wires at a time.
>
> When im done all i have is the speedo wireing to the ECM and some 12 volt
> inputs and grounds ABS uses a seperate ECM.
>
>
>
> dont try and reinvent the wheel wayne ev-blue.com
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