FWD DeVille 1985-2005, Fleetwood, and 60 Special
I've read on here and in the FSM how to jump the ALDL, loosen the dist., and change the timing using the timing light. However, I also saw in the manual that you can go into the diagnostics mode 5.9 (Let it read 7.0, hit HI, it'll read 9.5, than hit ECON and WARMER, it'll read 5.0, then LO or HI...