bad coil pack or cam angle sensor please help??

[davetheman81]

car intermittently sputters out, then the tech hits zero, then the car back fires. Today i caught it on dsm link and i noticed that when it happens the car reads like 10,000 plus rpms at like either 40 or 5 degrees of timing even though im either idling or going like 30, does this sound like a cas or transistor pack or maybe coil pack? thanks i figured since it was intermittent it might be something else, why wouldn't it happen all the time? thanks

 

[Tyeler18]

Having the exact same issue essentially. Mine will start sputtering as soon as it gets warmed up (120+ degrees) and eventually just die and not start until it cools down. Luckily I've got 3 AWD 90's to swap parts between I can narrow mine down. So far I've only had time to swap coilpacks which didn't fix it. My Ecmlink logs go haywire when this occurs.

 

[luv2rallye]

Try heating the power transistor unit up with a hair dryer to see if it brings out the failure, (and then the coil pack). If it does replace it.

 

[einks92tsi]

Having the exact same issue essentially. Mine will start sputtering as soon as it gets warmed up (120+ degrees) and eventually just die and not start until it cools down. Luckily I've got 3 AWD 90's to swap parts between I can narrow mine down. So far I've only had time to swap coilpacks which didn't fix it. My Ecmlink logs go haywire when this occurs.

i was having this same problem i changed plugs, wires, and coil packs and still didn't fix the problem so the last option was to change the cam angle sensor.

 

[ThomasGSX]

Mine did something similar a while ago, and it ended up being a loose connection to the harness connector on the coil pack, picked up a harness and pigtail from the junkyard, and never had it again.

I also have had a CAS fail too, it did sputter quite badly, but never had my tachometer flutter as you are describing.