Originally Posted by
eboch
Hi All;
I have an LS3 with E38 ECU in a C2 Corvette. Using HPTuners scanner, I get no tach reading (engine running of course). The LS3 is out of a '09 Corvette ... which has a factory dash tach ... so I assume the E38 would have had a tach output signal. I have the E38 "tach" programmed to crank & 15/15.
The dash tach in the C2 corvette is connected to pin 48 on the E38 ECU and also has no tach reading. I have no 1kohm pullup on this wire at this moment, I'll be trying that shortly. But this shouldnt affect the HPtuners lack of a tach reading (which would come across the OBD connection).
Its almost as if the E38's tach output is somehow "disabled".
Anyone have any suggestions/ideas.
Thanks
eboch