I've got the cable, downloaded the software, but no license #. Not being cheap, just broke. Is there a "free" way to do this? Fixin' to do IP and such.
Well I've tried to run the Basic Scan and get an error on Com 1, 3, and 4. During the Com 7 test there are no problems. Stefan Engh said, "If Com7 tests good that is probably what you should use and not Com1." So how do I do that? I was hoping to run the scan before digging into my to-do list, but the FFM sprung a major fuel leak today so the top end came off today.
Done. Now I just have to wait(not too long, only vehicle I've got) till it gets put back together when I get around to injectors, FTB, new fuel lines, possibly IP.
So it's finally back together and I was able to run GMTDScan Basic. Readings vs guages were a little off. Scan reads RPM 250 higher, 1 MPH slower, and boost about .5 psi higher. My TDC reads at -.44. What parameters to I need to be watching or looking for?
your tach is probably off because you have the wrong pulley on the alternator. your TDCO number is in the ballpark IIRC the factory specs are -.35 to -.75