Solved 4500rpm breakup for 86GT AOD
I was convinced I had a fuel issue.
No CODES. Seemed to get better with a new fuel filter.
Took car to shop today and they checked fuel pressure is okay. Also verified that my running 90 test on injectors was correct. No fuel issue.
Old Ford Tech working there remembered an issue with a failing "spout" on the distributor advance being commonplace. Once he replaced that with a jumper the problem was solved.
Pulls strong all the way to 5800 redline in both 1st and 2nd.
86 GT Conv Stock 17" Wheels Autocrosser
84 LX Conv Sold
87 GT Conv Sold