hey folks. here goes. i drive the 88 gt stang about once or twice a week. last time i drove it, it ran strong. i started it up and drove it yesterday, and it is missing pretty bad. idles normal - no miss and idle speed the same. as soon as i accelerate, it misses. the miss is consistent through the rpm range. seems to do it only under load (cant get it to miss idling in the garage). i havent tried to work on it yet. i got no codes. search of related topics only seemed to indicate the harmonic balancer could be gone. i would think it would miss in all conditions were that the case (at idle, etc). not so.
i have normal vacuum (gauge in the car). im not sure how i will test the ignition out, as i cant do diagnostics while driving up a hill or accelerating (im crazy, but not that much). i plan to try to check spark at all cylinders, fuel pressure, etc, but since i cant replicate the miss in the shop, i was hoping your experience might produce some ideas on where to look. i was thinking maybe the Hall effect pick up dumped on me, but i dont know how to test it. could a bad coil cause this (im thinking so - coil works but not within specs). just dont get how it ran great one day and like poo a few days later. it feels like im runnin on 5 or 6 cylinders (doesnt even sound like a stang). no pinging, etc. car is stock (still S.D.), timing at 14* (no recent changes). all PM is done (pcv, air filter cleaned, fuel filter, etc). im halfway through a tank of gas, so dont think it is bad gas.
any and all ideas are very welcome and appreciated. thanks guys and gals.
i have normal vacuum (gauge in the car). im not sure how i will test the ignition out, as i cant do diagnostics while driving up a hill or accelerating (im crazy, but not that much). i plan to try to check spark at all cylinders, fuel pressure, etc, but since i cant replicate the miss in the shop, i was hoping your experience might produce some ideas on where to look. i was thinking maybe the Hall effect pick up dumped on me, but i dont know how to test it. could a bad coil cause this (im thinking so - coil works but not within specs). just dont get how it ran great one day and like poo a few days later. it feels like im runnin on 5 or 6 cylinders (doesnt even sound like a stang). no pinging, etc. car is stock (still S.D.), timing at 14* (no recent changes). all PM is done (pcv, air filter cleaned, fuel filter, etc). im halfway through a tank of gas, so dont think it is bad gas.
any and all ideas are very welcome and appreciated. thanks guys and gals.