Couple questions - I'm having a long of the same issues and just starting my diagnosis. Also started after a fill-up after sitting with low fuel for a few weeks. Yesterday with the engine running the wires were pulled from cylinders 1 and then 2, seems like I'm getting good spark but there was no change in idle when pulling the #2 wire so that cylinder is suspect. Plugs have less than 500 miles on them, wires, cap, and rotor have less that about 1000 on them. Inside of distrib cap looks fine, no spidering, etc. Haven't checking EGR, charcoal filter, or TPS.
Planning on doing a compression check this afternoon just to rule out HG. I have a 91 3FE - If I decide to purchase a replacement ECU is there a range that I can plug in to mine like 91/92 or just 91 or.....?
Planning on doing a compression check this afternoon just to rule out HG. I have a 91 3FE - If I decide to purchase a replacement ECU is there a range that I can plug in to mine like 91/92 or just 91 or.....?