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88ragtop
V6z24.com is my god
Joined: 01 Oct 2003
Posts: 2817
Location: Sicklerville, New Jersey
1988 Cavalier Z24 Convertible
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| Six_Shooter wrote: | So who is using the revised (no 5v regulator) circuit?
I'd really like a self contained ALDL cable, since currently my Laptop doesn't hold a charge so I need the lighter/power point for the inverter.
I've also noticed in other circuit designs that there are two diodes used on pins 7 and 8 to isolate them from each other, anyone add these in?
BTW, this thread pops up on Google when searching for ALDL information. |
The diodes would cause a voltage drop of approximately .7 volt. May or may not be a problem depending on the voltage at the port.
You might want to slap a multimeter on those pins of your laptop to avoid the issue tony pointed out above.
You could also keep the 7805 and run it off a 9v battery. Should last quite a long time..
Just some ideas.. Myself, I bought a lighter socket splitter to power the laptop & the ALDL. Works in every car, assuming the lighter plug works. For those situations, it's 15' of cable with a lighter socket on one end and a set of alligator clips on the other 
- Frank
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Six_Shooter 
Ran out of titles
Joined: 25 Aug 2002
Posts: 19040
Location: ,,,(>_<),,,
1985 S15 Jimmy
1985 SkyHawk
1998 Malibu
1984 Other
1973 240z
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| 88ragtop wrote: | | Six_Shooter wrote: | So who is using the revised (no 5v regulator) circuit?
I'd really like a self contained ALDL cable, since currently my Laptop doesn't hold a charge so I need the lighter/power point for the inverter.
I've also noticed in other circuit designs that there are two diodes used on pins 7 and 8 to isolate them from each other, anyone add these in?
BTW, this thread pops up on Google when searching for ALDL information. |
The diodes would cause a voltage drop of approximately .7 volt. May or may not be a problem depending on the voltage at the port.
You might want to slap a multimeter on those pins of your laptop to avoid the issue tony pointed out above.
You could also keep the 7805 and run it off a 9v battery. Should last quite a long time..
Just some ideas.. Myself, I bought a lighter socket splitter to power the laptop & the ALDL. Works in every car, assuming the lighter plug works. For those situations, it's 15' of cable with a lighter socket on one end and a set of alligator clips on the other
- Frank |
Yep, I know about the voltage drop Frank, kinda have to. 
I didn't think about the lighter plug splitter, since well, it looks clutered and for some reason my mind doesn't even consider something that looks cluttered.
I'll check my port, and see what it has.
BTW I have also seen a port powered max232 circuit that also had a 5 volt regulator as well.
I have at least 4 different variations on this max232 chip ALDL communication cable. :S I think I'll build the one in this thread since it looks to be the simplest. I'd like to build a few variations and see if there is any noticable communication differnce.
I just might add a 9V battery connection, just because.
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The Surgeon General never said anything about smoking the competition! |
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SuperDave
13 sec N/A club
Joined: 02 Apr 2002
Posts: 22793
Location: Quad Cities, Iowa
1991 Cavalier Z24
2008 G6
2006 Trailblazer LS
1989 Camaro
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i have 2 of the self powered ALDL circuits running, they work on my old Toshiba laptop, Moon's laptop and my new Dell
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Six_Shooter
Ran out of titles
Joined: 25 Aug 2002
Posts: 19040
Location: ,,,(>_<),,,
1985 S15 Jimmy
1985 SkyHawk
1998 Malibu
1984 Other
1973 240z
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| whitelightning2 wrote: | | i have 2 of the self powered ALDL circuits running, they work on my old Toshiba laptop, Moon's laptop and my new Dell |
With or without diodes or regulator?
MAX232 or MAX232A?
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SuperDave
13 sec N/A club
Joined: 02 Apr 2002
Posts: 22793
Location: Quad Cities, Iowa
1991 Cavalier Z24
2008 G6
2006 Trailblazer LS
1989 Camaro
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this one:
just a regular max232..
actually for this last one i used a comm board for an old casino bill acceptor, it had a max232 on it.. i just cut off the rest of the junk and soldered on what i needed.
You can also get away with using 10uf caps instead of 4.7.
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Six_Shooter
Ran out of titles
Joined: 25 Aug 2002
Posts: 19040
Location: ,,,(>_<),,,
1985 S15 Jimmy
1985 SkyHawk
1998 Malibu
1984 Other
1973 240z
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Cool, I've had my MAX232 chip for a while now, just haven't got around to building the circuit yet, probably tomorrow.
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burn
* Newbie *
Joined: 13 Dec 2002
Posts: 5110
Location: Sarnia, Ontario, Canada
1992 Cavalier Sedan
2006 Colorado LT
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I also rewired mine exactly how this diagram is:
and it works fine powered off the laptop without a diode.
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Little_Dragon
Post Whore
Joined: 31 Mar 2002
Posts: 1166
Location: Waterloo, On
1990 Cavalier Z24
1990 Cavalier Z24
1992 Taurus SHO
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| burn wrote: |
ECM / MEMCAL:
.. A 91-94 MEMCAL uses the A1 definition on its eprom. The eprom is the actual chip inside of the memcal that the data is stored on. The definition basically is the format in which the data is arranged on the eprom. If you have a 88-90 MEMCAL, then you have the 6D definition, and EFILive & freescan wont understand it. But have no fear, as long as you have an analog dash you can grab a memcal from a 91 J-body with the same trans and swap it in and your good to go. |
FYI a 1990 with automatic Transmission does not work 100% with a 1991+ MEMCAL.
THe Trans in a 1990 used a mechanical VSS .. whereas the 1991+ that I've seen in scrapyards use a digital (magnetic pulse) VSS.
Your 1990 Automatic mated with the 1991+memcall won't work 100%. Your Cruise controll and TCC lockup won't work. (found that out on my car)
maybe there is a way around this.. but I don't know it.
Can't wait to find time to read this whole thread...
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Carey| 1990 Chev Z24 - RIP - hit deer | 16.053 @ 84.070
| 1990 Chev Z24 - DD | 15.9963 @ 83.79 115whp 150wtq Dyno spring 08 |
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burn
* Newbie *
Joined: 13 Dec 2002
Posts: 5110
Location: Sarnia, Ontario, Canada
1992 Cavalier Sedan
2006 Colorado LT
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| Little_Dragon wrote: |
FYI a 1990 with automatic Transmission does not work 100% with a 1991+ MEMCAL.
THe Trans in a 1990 used a mechanical VSS .. whereas the 1991+ that I've seen in scrapyards use a digital (magnetic pulse) VSS.
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They may appear different - however they work the same. The 90 cable driven speedo actually has an electronic VSS inside the cluster, and uses the same rate as a 91 internal VSS sensor.
| Little_Dragon wrote: |
Your 1990 Automatic mated with the 1991+memcall won't work 100%. Your Cruise controll and TCC lockup won't work. |
There is a flag that you have to enable in the file to convert a 5spd bin to an auto bin.
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85droptopta
Member
Joined: 02 Oct 2007
Posts: 19
Location: Grand Rapids, Michigan
1988 Cavalier Z24 Convertible
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| dailydriverz wrote: | there are programs to both monitor and program 4 cyl chips. you just have to look beyond freescan and gmpcm
programs like tunercat support additional ECMS like 88-89 2.8s and 2L engines (749)
also using a 91 chip in an older ecm is like cutting your stock springs instead of buying lowering springs. |
What can I use for my 88 z24 Cavalier. If i use a 91 memcal bad things happen to my CC, AC, digital dash, and so on.
I tried efi live but it had next to nothing info for a scantool.
TTS datamaster couldn't connect to it.
nobody seems to have a 6D.ads file for Tuner pro. Althouh I found the hack for it so I can change my bin. But I can't find how to datalog this car.
anybody know of other solutions then swaping the memcal to one that dosen't work for me?
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isaachayes
Mboard Overdose
Joined: 02 Jul 2006
Posts: 915
Location: JC, Missouri
1994 Beretta
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Can the Texas Instruments MAX232IN be used? It's only .55 cents from Jameco (they have the cheapest online shipping/handling). I clicked the data sheet and it shows TI at the bottom put talks about maxim chips?? hmm
Also what about the MAX233 (MAX203) ?? It needs no capacitors it says... That would cut down on parts and size...
http://www.jameco.com/Jameco/Products/ProdDS/24811.pdf
The diagrams here show 5 caps... the pdf says only 4 needed... so If going with the 233, which cap is left over?
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SuperDave
13 sec N/A club
Joined: 02 Apr 2002
Posts: 22793
Location: Quad Cities, Iowa
1991 Cavalier Z24
2008 G6
2006 Trailblazer LS
1989 Camaro
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Has anyone verified the correct VSS settings for a '89 5 speed yet?
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kego
Addicted Member
Joined: 24 Jan 2008
Posts: 266
Location: highland, Indiana
1990 Cavalier Z24
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 i have no damn clue what any of this means or how to do any of this or even where this things at omg but i wana do this cuz my z is a peice of shit HELP!!! pm me
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scott0999
10k Rollover
Joined: 11 Sep 2004
Posts: 10145
Location: WI
1994 Cavalier Z24
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| kego wrote: | | i have no damn clue what any of this means or how to do any of this or even where this things at omg but i wana do this cuz my z is a peice of shit HELP!!! pm me |
you dont need to do any of this if your car is stock
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91cavgt
Addicted Member
Joined: 01 Aug 2002
Posts: 376
Location: Texas
1993 Cavalier RS Coupe
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Can someone tell me what a stock 3.1L motor runs as far as ignition advance? Particularly at idle, light load cruising, and at full throttle?
I'm trying to tune my Haltech on Wagonstein, but I have nothing to go by as far as stock maps. I've currently got the car running 14-18 degrees of advance at idle, 38-43 degrees of advance at light load while cruising, and about 18-22 degrees while under 9 psi of boost. With these settings there is no hesitation, no audible knock, and no audible ping.
I'm not really concerned about ignition under boost right now because I'm not planning on tuning it, but I'd like to know stock full throttle advance for a referance point as well as all the other listed ignition advance. Thanx......
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91 Cavalier "GT" <-- old car, I miss her
89 Pontiac Sunbird GT Turbo Convertible <-- old car
91 Cavalier Wagonstein <-- old car
93 Cavalier race car - current car, former dirt circle track car transforming into an autocross/road course whore |
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