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Hello all,
I'm new to this forum and also to the Corvette world. I just picked up a pretty nice 87. I'm not new to tuning but I do have a couple of questions. I have the WINALDL software on my laptop that I used on my previous car, an 86 Grand National. It worked great on that car but I can't get it to read any data on this one. I downloaded the correct version for the car from the list of supported vehicles. My cable was purchased for the other car, does anyone here know if the same cable will work on this car? When I hook it up all I get is the top three lines in the raw data table and a flashing red box with the number 5 in it. Does this one need a seperate resistor? There is one built into the cable. I'm connecting to pin E for data and pin A for ground. Anyone have any ideas. Thanks in advance.
I had the same problem with my 89 and I had to use a 10K ohm resistor across a-b terminals on the aldl connector to get windaldl to work. The only problem with this is that it puts my ecm into alcl mode and my idle rises to 1000 rpm and the timing goes to full advance. Not effective for recording wot runs because it pings like crazy this way. I haven't heard how to avoid this yet.
John
Yes, 10K resistor needed. It's interesting, others have mentioned the high idle and full advance. On our '89 the idle rpm didn't change. The timing might have changed but we didn't notice any audible pinging.