Trouble shooting and Diacom Connecting Issues (complex)
Thread Starter
Safety Car
Joined: Dec 1999
Posts: 4,691
Likes: 1
From: Framingham MA
Trouble shooting and Diacom Connecting Issues (complex)
My 86 runs rich sometimes, sometimes it seem to run fine.
I have been trying to connect my car in ALDL (high speed) mode, and it rarley connects in this mode (maybe 1 in 50 tries) and always connects in diagnostic mode. I have the little adapter Diacom supplies for ALDL mode. One thing I noticed is that in Diagnostic mode pin B (ECM request) goes to Zero volt while in high speed mode attemps it only goes to 2.5 Volts. Is this something I should track down? or is it an issue with diacom/laptop or a sympton of my problems. Anyone have any good ideas on how to connect in ALDL. My car is running 89 code with just a higher injector constant for Ford 24lb injectors. It has the same problems with the stock chip also.
I have been trying to connect my car in ALDL (high speed) mode, and it rarley connects in this mode (maybe 1 in 50 tries) and always connects in diagnostic mode. I have the little adapter Diacom supplies for ALDL mode. One thing I noticed is that in Diagnostic mode pin B (ECM request) goes to Zero volt while in high speed mode attemps it only goes to 2.5 Volts. Is this something I should track down? or is it an issue with diacom/laptop or a sympton of my problems. Anyone have any good ideas on how to connect in ALDL. My car is running 89 code with just a higher injector constant for Ford 24lb injectors. It has the same problems with the stock chip also.
Drifting
Joined: Dec 1999
Posts: 1,319
Likes: 2
From: Douglasville GA
Re: Trouble shooting and Diacom Connecting Issues (dgoodhue)
Hi there, 86 models are a pain in the posterior with Diacom!
1) is your parallel port set to uni-directional? Should not be bi-directional, nor ECP, or EPP
2) If you are using the diacom.bat file or diacom-p.bat file, add a /F following the gmecm.exe command in the file, ie gmecm.exe /F
3) What speed lapop are you using? If a pentium, you may need a replacement gmecm.exe module
I had a ThinkPad 760CD, and it would not communicate for crap with my 86. I had to go to a different laptop, an old Compaq LTE Elite 486/75 model.
Tom Melton
82 CE
86 Z51 Coupe
1) is your parallel port set to uni-directional? Should not be bi-directional, nor ECP, or EPP
2) If you are using the diacom.bat file or diacom-p.bat file, add a /F following the gmecm.exe command in the file, ie gmecm.exe /F
3) What speed lapop are you using? If a pentium, you may need a replacement gmecm.exe module
I had a ThinkPad 760CD, and it would not communicate for crap with my 86. I had to go to a different laptop, an old Compaq LTE Elite 486/75 model.
Tom Melton
82 CE
86 Z51 Coupe
Thread Starter
Safety Car
Joined: Dec 1999
Posts: 4,691
Likes: 1
From: Framingham MA
Re: Trouble shooting and Diacom Connecting Issues (tommelton)
1) is your parallel port set to uni-directional? Should not be bi-directional, nor ECP, or EPP
2) If you are using the diacom.bat file or diacom-p.bat file, add a /F following the gmecm.exe command in the file, ie gmecm.exe /F
3) What speed lapop are you using? If a pentium, you may need a replacement gmecm.exe module
2) If you are using the diacom.bat file or diacom-p.bat file, add a /F following the gmecm.exe command in the file, ie gmecm.exe /F
3) What speed lapop are you using? If a pentium, you may need a replacement gmecm.exe module
I add the /F, what does this do? I use the Diacom on my Syclone, so I don't want to mess that up.
I am using a 486/25
Racer
Joined: Jul 2001
Posts: 359
Likes: 0
From: Russellville TN
St. Jude Donor '06
Re: Trouble shooting and Diacom Connecting Issues (dgoodhue)
Dave,
I had the same problem. I called Rinda Technologies and they sent me an updated version of Diacom. Everything works like a champ!
Frank :flag
I had the same problem. I called Rinda Technologies and they sent me an updated version of Diacom. Everything works like a champ!
Frank :flag
Thread Starter
Safety Car
Joined: Dec 1999
Posts: 4,691
Likes: 1
From: Framingham MA
Re: Trouble shooting and Diacom Connecting Issues (Corvette86)
I had the same problem. I called Rinda Technologies and they sent me an updated version of Diacom. Everything works like a champ!
Drifting
Joined: Dec 1999
Posts: 1,319
Likes: 2
From: Douglasville GA
Re: Trouble shooting and Diacom Connecting Issues (dgoodhue)
Dave - mine is 2.85 also. If you want to call me sometime, we can walk through some of this, the /F switch, the parallel port, etc.
What is the brand/model of PC you are running?
If you want to chat in person, email or I/M me and I will send you my number...
-Tom
What is the brand/model of PC you are running?
If you want to chat in person, email or I/M me and I will send you my number...
-Tom
2nd Gear
Joined: Jul 2002
Posts: 2
Likes: 0
From: Espoo Espoo
Re: Trouble shooting and Diacom Connecting Issues (tommelton)
What is exactly this special adapter?
I have a second-hand Diacom that I acquired from a garage sale, and have
no adapters whatsoever. Would this adapter connect the pins E and M?
I am only able to link in DIAG mode (160 baud) with the cable and missing
adapter and would love to have 8192 baud mode working for WOT logging.
Thanks
I have a second-hand Diacom that I acquired from a garage sale, and have
no adapters whatsoever. Would this adapter connect the pins E and M?
I am only able to link in DIAG mode (160 baud) with the cable and missing
adapter and would love to have 8192 baud mode working for WOT logging.
Thanks
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Pouria Savadkouei
Pro
Joined: Jun 2000
Posts: 686
Likes: 0
From: Crystal Lake, IL USA
Re: Trouble shooting and Diacom Connecting Issues (dgoodhue)
>> Does any know if Craig Moates Software have any problems connecting to 86's?
No problems, but it requires a serial interface and cable. That's a plus for me because I use the PPII, which is a parallel port PROM burner.
No problems, but it requires a serial interface and cable. That's a plus for me because I use the PPII, which is a parallel port PROM burner.
