ALDL cable recomendations? (ebay, etc...) - mine doesn't work
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Car: 89 GTA
Engine: 5.7 ZZ4 Vortec TPI
Transmission: 7004R
ALDL cable recomendations? (ebay, etc...) - mine doesn't work
I have a 1989 L98 and I bought an serial ALDL cable a while back off ebay - it was in a case, with pins that looked like small nails, and a switch (Codes/ALDL) and LED on the front. It never worked for me, even sent it back to the seller and he said it was fine.
Anyway, I popped it open and it seemed simple enough, I think just 1 resistor so I thought I'd make my own but I did some reading and the schematics I found for them seemed more involved (chip, diodes, etc...) so I'm not sure what's really needed.
I'd buy one if I knew it was correct for my car but I am skeptical now. So if I can easy get the existing cable I have to work I'd do that or if that's the wrong cable for my car can anyone recommend one that will work?
thanks for any info
Anyway, I popped it open and it seemed simple enough, I think just 1 resistor so I thought I'd make my own but I did some reading and the schematics I found for them seemed more involved (chip, diodes, etc...) so I'm not sure what's really needed.
I'd buy one if I knew it was correct for my car but I am skeptical now. So if I can easy get the existing cable I have to work I'd do that or if that's the wrong cable for my car can anyone recommend one that will work?
thanks for any info
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Car: 89 GTA
Engine: 5.7 ZZ4 Vortec TPI
Transmission: 7004R
Re: ALDL cable recomendations? (ebay, etc...) - mine doesn't work
Looks nice - bought it. Hopefully this one will work
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Car: 89 GTA
Engine: 5.7 ZZ4 Vortec TPI
Transmission: 7004R
Re: ALDL cable recomendations? (ebay, etc...) - mine doesn't work
Doesn't work either :-(
When I switch the resistor to on the engine does rev higher but no response from PCM. I tried many programs, no cable or ECM detected. I made sure the connections were good on the aldl plug- nothing obvious to me. (I'm a software engineer by trade so I think I have things set up ok)
The computer appears to work otherwise (can get codes, CEL, etc...). I guess that I have my work cut out for me checking out this ECM.
Any suggestions? I could check the data port and ground and that should give me a signal, right? Should I check voltage there or ohms?
When I switch the resistor to on the engine does rev higher but no response from PCM. I tried many programs, no cable or ECM detected. I made sure the connections were good on the aldl plug- nothing obvious to me. (I'm a software engineer by trade so I think I have things set up ok)
The computer appears to work otherwise (can get codes, CEL, etc...). I guess that I have my work cut out for me checking out this ECM.
Any suggestions? I could check the data port and ground and that should give me a signal, right? Should I check voltage there or ohms?
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Car: 89 GTA
Engine: 5.7 ZZ4 Vortec TPI
Transmission: 7004R
Re: ALDL cable recomendations? (ebay, etc...) - mine doesn't work
I read that the only way to be sure it's not the ECM is to try another - Autozone had a reman for $70 so I went for it and now I can get data! And it wasn't just a loose connection because I had the ECM out before I got the new one and it didn't help. Interesting that the original ECM was a GM Reman which I think is strange for a stock car I got at 50k miles but who knows.
Now to learn now to interpret the numbers.
Now to learn now to interpret the numbers.
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Re: ALDL cable recomendations? (ebay, etc...) - mine doesn't work
I read that the only way to be sure it's not the ECM is to try another - Autozone had a reman for $70 so I went for it and now I can get data! And it wasn't just a loose connection because I had the ECM out before I got the new one and it didn't help. Interesting that the original ECM was a GM Reman which I think is strange for a stock car I got at 50k miles but who knows.
Now to learn now to interpret the numbers.
Now to learn now to interpret the numbers.
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