HT4100 4.1, 4.5, 4.9 Discussion, Won't start when hot (intermittent) in Cadillac Engine Discussion; Our 93 SDV with 4.9 will occaisionally not start when hot. Wait till completely cold and it starts and runs ...
Our 93 SDV with 4.9 will occaisionally not start when hot. Wait till completely cold and it starts and runs fine. Good for several days. Then re-occured more recently. Re-started after 20 minutes and drove 4 blocks and stalled while running. Previous problems were only a no-start hot. This was a stall while running.Went back after 4 hours and it started and ran normally. The only code it shows is 12 - No Distributor Signal. The car runs again now, expecting it to re-occur. How do I avoid throwing a whole string of parts at it to fix this? Thanks for any help.
Be aware that here have been posts here and there about premature failure of AZ modules. When my original module failed, mercifully right in the driveway, I replaced it with a Standard Products brand as it was Sunday and that was all there was available. OK so far after about three years.