DIY_EFI Digest Wednesday, 3 March 1999 Volume 04 : Number 142 In this issue: Combustion - Third Edition by Irwin Glassman RE: ALDL project Re: ALDL, again See the end of the digest for information on subscribing to the DIY_EFI or DIY_EFI-Digest mailing lists. ---------------------------------------------------------------------- From: bob@xxx.com (Robert Harris) Date: Wed, 03 Mar 1999 05:17:08 GMT Subject: Combustion - Third Edition by Irwin Glassman It's here. It's mine -all mine. No more Inter Library Loan. It's all mine. Go ahead - gloat - but I got the word from on high about all that is needed to be known about combustion - at least a readable primary source by someone who is referenced by everyone in all papers. All you ever wanted to know about combustion - de mything most folk lore and explaining what actually happens. Mine - all mine. Unfair advantage - I love It!!!!. Clearly needing a life over enthusiastic bibliophile. 1963 Ford C-600 Prison Bus Conversion "Home" 1971 Lincoln Continental 460 "Christine" 1972 "Whale" Mustang awaiting transplant 1978 Dodge Long Bed Peeek Up "Bundymobile" Habaneros - not just for breakfast anymore ------------------------------ From: "Ward Spoonemore" Date: Tue, 2 Mar 1999 21:19:09 -0800 Subject: RE: ALDL project Yes mode 4 did sound interesting, but the problem, is that only P4 ECM have this feature and virtualy erery one onf them require disfferent interogation/response words. And the problem is the the changed taht you woulds make don't blend in to the calibration very well. For example you can alter the spark output at any given point, but this is a global change, like tunring the distributer, how do you translate this to a spark table. Very trickey, as a result after if figured it out I never used it. I have how ever used mode 2 and 3, my 1st download from a flash mem PCM was done with mode 2, 64 bytes at a time. Mode 3 letst you havwe na abreviated diagnostc of your own design that can run up to a frame / - -----Original Message----- From: owner-diy_efi@xxx.edu [mailto:owner-diy_efi@xxx.edu]On Behalf Of Bruce Plecan Sent: Tuesday, March 02, 1999 6:35 PM To: diy_efi@xxx.edu Subject: Re: ALDL project Boy this mode 4 sounds neat, any clues about how that's actually done.. Bruce >Mode 1: Diagnostic data, 63 bytes long >Mode 2: A memory dump (64 contagious bytes at a time) >Mode 3: Selectable memory bump, may format and dump up to 8 bytes >Mode 4: Provides the ability to alter specific ECM function on the fly. AFR. >EGR SPK Etc. >Mode 7: Command mode, (restores normal operation) > >All of these command require the issuance of a message request for each >occurrence of the desired mode. >and what else would you like to know ? >ard ------------------------------ From: Ludis Langens Date: Wed, 03 Mar 1999 00:56:07 -0800 Subject: Re: ALDL, again Padgett 0sirius > Well just a quick look at my Fiero (1227170/APR0164) ALDL (C3) gives a > stream like this: > Using available data, it seems likely that the "A0" at offset 019h (sorry, > I find it easier to think in hex) is coolant temp (1.35*160-8), "33" at > offset 039h is the RPM (1275/4=51/33h), & 46h at offset 035h is IAC (70). > Suspect the rest can be decoded the same way once I get a chance to compare > several readings. > > Or is all of this common knowlege /way off ? Am trying to come back up to > speed. The V6 Fiero ALDL frame content description was posted to diy_efi a _long_ time ago. An archive search should find it. A slightly better version is also available on the web - a listee typed in a GM document describing lots of old C3 ALDL formats. The URL is/was: http://www.isthq.com/~dan/aldl.htm After looking at Dan's info, if you still have questions about what the various flag bits in the frame do, I can provide all the gory details. - -- Ludis Langens ludis (at) cruzers (dot) com Mac, Fiero, & engine controller goodies: http://www.cruzers.com/~ludis/ ------------------------------ End of DIY_EFI Digest V4 #142 ***************************** To subscribe to DIY_EFI-Digest, send the command: subscribe diy_efi-digest in the body of a message to "Majordomo@xxx. A non-digest (direct mail) version of this list is also available; to subscribe to that instead, replace "diy_efi-digest" in the command above with "diy_efi".