Sounds like coils to me. I wouldn't even mess with swapping them...I would just replace all four. You can do just 2 and 4 but then you can expect 1 and/or 3 to go soon.
Just installed the new coil and the car runs great. Very pleased with the results.
I also ordered four (4) new ignition coils from Hitachi, installed them 60 miles ago and it's been smooth since the installation. My car is quieter, more responsive, and idles better. No, check engine lights at all.
I have an MSD blaster 2 coil on my 93 fox and it works great. I went with this coil for convenience (bought at a FLAPS when my stock coil died) rather than performance, so unsure if there are any gains to be had (doubtful).
I ran on my original ignition coils until about 220k miles until I started getting random misfires.
I personally dislike HUCO brand which it had, I replaced mine with a BERU coil, still going strong since '97.
My coil is a Beru and pretty much brand new.
Many aftermarket coils are completely out of spec and do not work well, some can even destroy the ECU. OE, Bosch, Temic are all good, I believe Beru is an OE manufacturer as well.
I used to use the HUCO brand single coil on my old 8V and it would fail every year.... My parts supplier now only sells HUCO when they can't get the BERU units. I have a BERU on my VR and def a better quality piece. I think I went through 4 coils in 5yrs with my old 8V... eventually I kept one ready in the car "just in case"
I've replaced 4 of the 6 packs over the last three or so years. All but one actually broke in two when trying to remove them, leaving the bottom half on the spark plug!! I suspect water ingress (not sure how with all that plastic) as the coil packs all showed signs of corrosion.
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