hey what up guys im trying to figure this thing out but no luck yet. im working on a 95 gs when i starded it had 6 codes. now it got only 2. coil b manifuncion and ignition system manifuncion misfire. when i star the car runs good thill starts warming up than starts misfire and it sems like it runs on 2cylnders. i got new plugs, used coil pack and wires ,also got different ecu and still nothing .if anybody got any ideas please let me know

You might have a failing crank sensor. I've heard of that causing misfires.

Erik P.
Official 2GNT thread Hijacker
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thanks man, i will try that tomorrow ,any other ideas

you bought a brand new coil pack or a used one?

Car Status: P0140 o2 circuit number bank 1 sensor 2 Cel. Ill fix it tomorow lol.

Estimated mileage on engine: 15,xxx

If all you're seeing is a "coil b" failure code and not both A & B, i'd say you have a bad coil.

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'95 Eclipse TurboGS (garage deco)
'95 TSi AWD (restoring a survivor)
'97 Talon ESi-T (poor impulse control)
'99 Eclipse RS-T (daily beater)
'13 Evo X (mostly stock)
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thanks for help guys. the problem was conector for a crank sensor was filed with oil i cleaned up and put in different sensor and runs like a champ. i never heard that could couse a misfire but it did. thanks again