Well my little 318i has been mad at me since last December when we took at trip to test drive an E30 M3. On the way home she started running crappy and throwing 1222 code.
So...I thought perhaps some type of vacuum issue, so did the "mess delete", full tune up, cleaned up intake mani and put in new injector o-rings. Still wasn't running great, so purchased a j/y AFM (after testing the crank/cam sensors) and that seemed to do the trick.
Until recently...
I have been experiencing long crank times to start the car in the AM (6-8 seconds before it fires and starts), plus the idle is a bit lumpy until I rev it and drive for a bit.
Also, now I've noticed that trying to restart after engine is fully warmed up results in cranking with no firing (almost like vapor lock in my CIS VWs). It will eventually start if you keep at it - 20+ attempts - and requires a lot of throttle feathering to keep it from stalling. Once underway it will run, but throttle response is off.
So yesterday I tried to eliminate a few issues.
- Swapped out another AFM
- Swapped out coil packs
- Swapped out spark plug wires
None of these helped (did them independently). Got everything back to where it was, and fired it up and let it idle. As it warmed up the car seemed to idle better. A smooth, slow throttle input allowed the car to rev. A sharp stab or quick WOT stomp and the car just bogs...easing up on the throttle the engine would start to rev as the throttle closes.
I removed the throttle position switch while running, just made it idle rough. Disconnected the AFM and the same thing.
Took the car for a slow spin around the neighborhood and it felt okay. Came back to get my wallet to go for a longer drive and now it is in its "crank no fire" mode.
I am getting 1216 code, but that is likely due to me messing with the AFM and/or TPS.
Thoughts are I have are a possible fried coil pack that damaged the coil driver on the DME (have not swapped that) or possibly a bad coolant temp sensor. I know these CTS's wreak havoc on Motronic VWs and can cause some pretty crappy performance.
Mechanically the engine is sound - it has been well maintained with 3K oil changes all its life. Did timing component rebuild at 120K (has 160K now).
Any suggestions? Of course car could still be mad at me for the M3 issue. I prefer the M42 car over the S14 BTW (at least as a daily).
So...I thought perhaps some type of vacuum issue, so did the "mess delete", full tune up, cleaned up intake mani and put in new injector o-rings. Still wasn't running great, so purchased a j/y AFM (after testing the crank/cam sensors) and that seemed to do the trick.
Until recently...
I have been experiencing long crank times to start the car in the AM (6-8 seconds before it fires and starts), plus the idle is a bit lumpy until I rev it and drive for a bit.
Also, now I've noticed that trying to restart after engine is fully warmed up results in cranking with no firing (almost like vapor lock in my CIS VWs). It will eventually start if you keep at it - 20+ attempts - and requires a lot of throttle feathering to keep it from stalling. Once underway it will run, but throttle response is off.
So yesterday I tried to eliminate a few issues.
- Swapped out another AFM
- Swapped out coil packs
- Swapped out spark plug wires
None of these helped (did them independently). Got everything back to where it was, and fired it up and let it idle. As it warmed up the car seemed to idle better. A smooth, slow throttle input allowed the car to rev. A sharp stab or quick WOT stomp and the car just bogs...easing up on the throttle the engine would start to rev as the throttle closes.
I removed the throttle position switch while running, just made it idle rough. Disconnected the AFM and the same thing.
Took the car for a slow spin around the neighborhood and it felt okay. Came back to get my wallet to go for a longer drive and now it is in its "crank no fire" mode.
I am getting 1216 code, but that is likely due to me messing with the AFM and/or TPS.
Thoughts are I have are a possible fried coil pack that damaged the coil driver on the DME (have not swapped that) or possibly a bad coolant temp sensor. I know these CTS's wreak havoc on Motronic VWs and can cause some pretty crappy performance.
Mechanically the engine is sound - it has been well maintained with 3K oil changes all its life. Did timing component rebuild at 120K (has 160K now).
Any suggestions? Of course car could still be mad at me for the M3 issue. I prefer the M42 car over the S14 BTW (at least as a daily).
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