Fw: [Diy_efi] info

Geoff Harrison geoff_h
Thu Oct 27 00:12:56 UTC 2005


John, if antifreeze can damage paint, think about what it may do 
to a PCB.
You could spend a lot of time replacing parts, and still have an 
unreliable
ECU. Wrecking yard option sounds good. Make sure it comes from a 
car
without a leaky heater core.

Geoff H

From: "Steve Ravet" <Steve.Ravet at arm.com>
To: <diy_efi at diy-efi.org>
Sent: Thursday, October 27, 2005 7:26 AM
Subject: RE: [Diy_efi] info


I can't speak to your ECM specifically, but GM units use a 
mixture of
off the shelf parts and custom chips.  Even the off the shelf 
parts may
have a non standard part number on them.  Yours may be the same 
way. Any
chance of swapping a junkyard box in?  or a junkyard box for 
parts
scrounging?
--steve

> -----Original Message-----
> From: diy_efi-bounces at diy-efi.org
> [mailto:diy_efi-bounces at diy-efi.org] On Behalf Of miwukkid
> Sent: Wednesday, October 26, 2005 1:29 PM
> To: Diy_efi at diy-efi.org
> Subject: [Diy_efi] info
>
> I have a 91 Mazda protege front wheel drive with the 1.8 l
> SOHC engine.
> The ECU mounts under the center of the instrument panel. The
> heater core
> sprung a leak and when the engine stopped running I noticed
> that I had a
> computer box full of Anti-freeze. After the monumental task
> of replacing
> the heater core I need to test the ECU. Is there any way to 
> get a
> schematic??Some of the IC's come up on the web for sale but no 
> data
> sheet Same for the Processor. The darn thing has only one 
> injector
> driver and puts all of the injectors in parallel???? The
> little engine
> is amazing when it runs. Appreciate any help or direction 
> pointers. I
> will replace it with a PIC micro in the near future. I have a 
> lot of
> them left over after a home control project.
> John A. Allison
> Miwukkid at myhome.net
>
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>
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