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well my truck has had a cylinder #2 miss fire code that has gone away on its own...then it started chugging/miss fire on start up (sound like it flooded) but would clear up with in a few seconds...now it started surging under load at half throttle and pings every once and awhile (only drove 2 days like this )...well i checked live data on way home from work and my tps always reads 12 to 21 percent evan if wide open so i figure tps is bad but i also noticed the spark advance was jumping to 45 when cruzing is that normal and could there be some thing else wrong ? thanks
its a 99 4x4 3.9 engine...also it had a tune up about 3000 miles ago ..plugs, wires, cap and rotor....it also has an accel coil that previous owner installed
ok thanks ..i acually have 1 new injector that i bought when the miss fire code popped up but then i thought to my self dont be a tightwad replace them all and im just waiting on them to come in