Gauges not working after 2.7 to 3.5HO swap.
"Successful" swap from a blown 2.7 to a 3.5HO. Engine runs smooth, and car drives fine. However, several problems persist.
Tachometer and Spedometer not working (they do light up however and the gas gauge DOES work)
Shift Display (does not identify what gear you are in)
Data Link Connector not working (getting LINK ERROR on simple OBD readers, and cannot communicate with PC-based reader)
Warning lights on: ABS (my SE does not have ABS, so this remains disconnected), Airbag, e-brake, Check Engine
My car: 2002 2.7L SE (not autostick)
Donor: 2000 3.5HO R/T (autostick)
3.5HO parts installed in the Engine Bay:
engine & transmission
AC lines (had to alter some old 2.7 parts to fit with the 3.5 but all is well)
3.5HO wiring harnesses
3.5HO parts installed in the Interior:
BCM and housing
My biggest frustration is being prevented from reading the codes through the data link connector. I have not found any fault in a connection and the data link wiring itself routs through the 3.5HO BCM, which is connected into the engine bay using 3.5HO wiring. made things even worse.
I'm also concerned about the lack of tach or speed. Anyone ever fix this easily or should I just replace the gauges altogether?
I'd appreciate any help on this one - I'm kind of at a loss as to where to go from here.