MEXICOWANDERER wrote:
What does code extraction reveal?
Mex, a 1995 vintage vehicle would have a very crude ECM with very little diagnostics codes, equivalent to OBD1. Generally with that technology there was a way to short two pins in the diagnostic port then count the MIL light flashes then reference a code chart. Very little data to be had.
1996 was when vehicle manufacturers were required to standardize to OBD2 style ports, but they were not required to fully implement codes for everything at that time so many vehicles up to the early 2000's would have OBD2 ports but the data set was OBD1..
Had a 1993 Ford we bought new, two weeks after taking delivery it started running rough, hard starts and stalling.. No MIL light ever lit.. Back to the dealer.. The dealer ended up having to replace the ECM as a last resort, fixed the problem, never had any isses after that.. It was faulty and couldn't report it's own fault :S
