DIY_EFI Digest V5 #2
Stowe, Ted-SEA
StowT at PerkinsCoie.com
Tue Jan 4 20:27:01 GMT 2000
Hi, I am not quite sure how to send me items to the list but anyway:
does anyone have a working '747 and possibly a wiring harness for sale ?
thanks, Ted
-----Original Message-----
From: DIY_EFI-Digest-Owner at efi332.eng.ohio-state.edu
[mailto:DIY_EFI-Digest-Owner at efi332.eng.ohio-state.edu]
Sent: Tuesday, January 04, 2000 12:00 PM
To: DIY_EFI-Digest at efi332.eng.ohio-state.edu
Subject: DIY_EFI Digest V5 #2
DIY_EFI Digest Tuesday, January 4 2000 Volume 05 : Number 002
In this issue:
94/95 GM PCM + M6 tranny question
RE: DIY_EFI Digest V5 #1
Re: 94/95 GM PCM + M6 tranny question
Re: 94/95 GM PCM + M6 tranny question
How to read E6 eeprom while programming ?
See the end of the digest for information on subscribing to the
DIY_EFI or DIY_EFI-Digest mailing lists.
----------------------------------------------------------------------
Date: Tue, 04 Jan 2000 08:43:21 -0500
From: Dave Hempstead <dave_hempstead at agilent.com>
Subject: 94/95 GM PCM + M6 tranny question
Hi,
Does anyone know if a 94/95 GM PCM knows what gear its M6
transmission is in? If it does know, how does it get the information?
Does it send the gear # out its ALDL port? Anyone know what the ALDL
stream looks like for a PCM with manual transmission??
So many questions, so few answers,
Any help will be appreciated,
Dave Hempstead
dave_hempstead at agilent.com
------------------------------
Date: Tue, 4 Jan 2000 07:51:32 -0600
From: Don.F.Broadus at ucm.com
Subject: RE: DIY_EFI Digest V5 #1
A little trivia on the 1600 MR2 it looks stunningly similar to the Lotus
twin cam engine of years ago. You might want to see if the lotus page has
any info. I could be way off on this but looking at the Lotus twin cam book
and an 1600 Toyota twin cam I got from the yard they seem a direct copy. My
$.02
Don
> -----Original Message-----
> From: DIY_EFI-Digest-Owner at efi332.eng.ohio-state.edu
> [SMTP:DIY_EFI-Digest-Owner at efi332.eng.ohio-state.edu]
> Sent: Tuesday, January 04, 2000 4:00 AM
> To: DIY_EFI-Digest at efi332.eng.ohio-state.edu
> Subject: DIY_EFI Digest V5 #1
>
>
> DIY_EFI Digest Tuesday, January 4 2000 Volume 05 : Number
> 001
>
>
>
> In this issue:
>
> ECU's
> Re: Lucas EFI ECU
>
> See the end of the digest for information on subscribing to the
> DIY_EFI or DIY_EFI-Digest mailing lists.
>
> ----------------------------------------------------------------------
>
> Date: Sun, 2 Jan 2000 12:14:47 +1300
> From: "Nicholas Parker" <nrparker at xtra.co.nz>
> Subject: ECU's
>
> This is a multi-part message in MIME format.
>
> - ------=_NextPart_000_0027_01BF551A.F5EE2980
> Content-Type: text/plain;
> charset="iso-8859-1"
> Content-Transfer-Encoding: quoted-printable
>
> Hi List, =20
> Is there an ECU out there somewhere that I can plumb into my '1600cc =
> 1987 Toyota MR2 Supercharged.
> I would like MAP as opposed to AFM it currently has, 4 cyl sequential =
> injection and possibly 2 or 4 coil ignition. The main thing is =
> availability of aftermarket utilities to modify / customize my ECU.
> The current ECU has an 8051 derivative I'm told, and tables are onboard =
> and so can't be modified. I know this is possibly a stupid question but =
> does anybody have or know how to obtain the code from this ECU. I had =
> to try, but Toyota weren't helpful.
> I'm guessing with certainty that various lock bits on the ECU's 8051 MCU =
> are set. Is there any 'secret' method for dumping the code out of such =
> chips ? How about executing external code (via /EA pin) that is a jump, =
> then toggling the /EA pin at this point, having previously programmed =
> into the end of the 8051 ROM (only if contents are FFh) a loop that =
> dumps the contents ?
>
> Nick.
>
> - ------=_NextPart_000_0027_01BF551A.F5EE2980
> Content-Type: text/html;
> charset="iso-8859-1"
> Content-Transfer-Encoding: quoted-printable
>
> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
> <HTML><HEAD>
> <META content=3D"text/html; charset=3Diso-8859-1" =
> http-equiv=3DContent-Type>
> <META content=3D"MSHTML 5.00.2314.1000" name=3DGENERATOR>
> <STYLE></STYLE>
> </HEAD>
> <BODY bgColor=3D#ffffff>
> <DIV><FONT size=3D2>Hi List, <BR></FONT><FONT size=3D2>Is =
> there an ECU=20
> out there somewhere that I can plumb into my '1600cc 1987 Toyota MR2=20
> Supercharged.<BR>I would like MAP as opposed to AFM it currently has, 4 =
> cyl=20
> sequential injection and possibly 2 or 4 coil ignition. The main =
> thing is=20
> availability of aftermarket utilities to modify / customize my =
> ECU.<BR>The=20
> current ECU has an 8051 derivative I'm told, and tables are onboard and=20
> so can't be modified. I know this is possibly a stupid =
> question but=20
> does anybody have or know how to obtain the code from this ECU. I =
> had to=20
> try, but Toyota weren't helpful.<BR>I'm guessing with certainty that =
> various=20
> lock bits on the ECU's 8051 MCU are set. Is there any 'secret' method =
> for=20
> dumping the code out of such chips ? How about executing external =
> code=20
> (via /EA pin) that is a jump, then toggling the /EA pin at this point, =
> having=20
> previously programmed into the end of the 8051 ROM (only if contents are =
> FFh) a=20
> loop that dumps the contents ?</FONT></DIV>
> <DIV> </DIV>
> <DIV><FONT size=3D2>Nick.</FONT></DIV></BODY></HTML>
>
> - ------=_NextPart_000_0027_01BF551A.F5EE2980--
>
> ------------------------------
>
> Date: Sat, 1 Jan 2000 18:36:41 +0000
> From: "Roderick Warner" <Roderick_Warner at notes.teradyne.com>
> Subject: Re: Lucas EFI ECU
>
> Is there anyone who has or knows where to get hold of a schmatic ( and
> ideally
> some notes ) for the Lucas ECU as used on the Rover V8 engine. The ECU in
> question is part # 83986A for the flap type air flow meter. Similarly if
> there
> is experience of failure modes I would be very interested as I am in the
> process
> of fitting injection to a previously carb'd engine and am suffering very
> rich
> running , its ok when bliping the throttle. When I move the air flap( by
> hand)
> it appears to have no effect on the running , though the voltages do
> change over
> the specified range- hence I suspect the ECU. I need to get a scope onto
> the
> pulses to see their duration and changes ( if any). Any thoughts please ?
>
> Rod Warner
>
> ------------------------------
>
> End of DIY_EFI Digest V5 #1
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------------------------------
Date: Tue, 4 Jan 2000 09:21:32 -0600 (CST)
From: Roger Heflin <rah at horizon.hit.net>
Subject: Re: 94/95 GM PCM + M6 tranny question
On Tue, 4 Jan 2000, Dave Hempstead wrote:
> Hi,
> Does anyone know if a 94/95 GM PCM knows what gear its M6
> transmission is in? If it does know, how does it get the information?
> Does it send the gear # out its ALDL port? Anyone know what the ALDL
> stream looks like for a PCM with manual transmission??
>
It has to know what gear it is in. The computer also runs the skip
shift hardware. You might check the A4 code you have and see if you
can find the skip shift code. It basically checks to see if you are
in 1st gear and below a certain speed, and then activates some
hardware to force a shift to 4th. The code on the 93 is around EDB0
and D24B, if there is similar code in the A4 bin you have then it is
very likely that that bin with a few minor data changes is also used
on a M6. From everything I can tell the 93 uses the same "code" but
slightly different data. The "CARS" part is the CAGS or skip shift
stuff.
Roger
------------------------------
Date: Tue, 4 Jan 2000 11:16:25 -0600 (CST)
From: Eric Clark <eclark at hoser.com>
Subject: Re: 94/95 GM PCM + M6 tranny question
Andrew Mattei's webpage has both the A4 and M6 stream spec.
Here is the M6 spec.
http://www.mindspring.com/%7Eamattei/a273.doc
On Tue, 4 Jan 2000, Dave Hempstead wrote:
> Hi,
> Does anyone know if a 94/95 GM PCM knows what gear its M6
> transmission is in? If it does know, how does it get the information?
> Does it send the gear # out its ALDL port? Anyone know what the ALDL
> stream looks like for a PCM with manual transmission??
>
> So many questions, so few answers,
> Any help will be appreciated,
> Dave Hempstead
> dave_hempstead at agilent.com
>
------------------------------
Date: Tue, 4 Jan 2000 14:10:13 EST
From: PHXSYS at aol.com
Subject: How to read E6 eeprom while programming ?
Hi
I have some older E6's that use the 68HC811E2 micro. I was wondering if
there
is a way to see the addresses where the dos software loads setup parameters
and fuel/spark maps in the 2K on chip eeprom.
I was thinking of making a simple vb program to download custom setup to
eeprom. I need to know what info goes to what eeprom address.
Does anyone know how I can do this?
Thanks
Jon
------------------------------
End of DIY_EFI Digest V5 #2
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