I've owned this 08 535ix CPO w/65Kmiles for a couple months. Same problem has happened three times.
After running car normally with no issues, hiccups, misses, etc, I'll park the car and keep the engine idling. After some amount of idling perfectly smoothly, the engine runs rough briefly then dies. It will start, but then gets rough and dies again. In all three occasions the car has ultimately started back up and run...here are the three scenarios:
1. After long highway run, car idled for close to an hour and died. Got "engine malfunction-reduce power" warning. Car started after sitting for about 20 minutes...drove it to BMW dealer. They replaced HPFP, and low pressure sensor No problems for a few thousand mostly highway miles.
2. After perfectly smooth highway then city driving, parked and shut off car for 5-ish minutes. Started it, idled for about 3 minutes, started driving and it went rough and died 500feet later. Sat for about 10 minutes, started up...but this time I was too chicken to drive it, so had it towed to same dealer. They replaced all six injectors with the most recent version.
3. Normal around town, errand-running...ran great. Ordered a pizza, idled 15minutes then died. Waited a few minutes, it started and ran just well enough to get home (1.5miles), but I had to keep the revs up...and even when moving engine ran rough...like it was missing. Parked car in garage over night. Started fine this morning, but got the service triangle, and the check engine light is staying on.
This seems related to idling...maybe a sensor is getting hot causing intermittent failure? Anyone else have any straws I can grasp at?
I'm about to call the dealer, but thought I'd inquire with the the collective experience here...
After running car normally with no issues, hiccups, misses, etc, I'll park the car and keep the engine idling. After some amount of idling perfectly smoothly, the engine runs rough briefly then dies. It will start, but then gets rough and dies again. In all three occasions the car has ultimately started back up and run...here are the three scenarios:
1. After long highway run, car idled for close to an hour and died. Got "engine malfunction-reduce power" warning. Car started after sitting for about 20 minutes...drove it to BMW dealer. They replaced HPFP, and low pressure sensor No problems for a few thousand mostly highway miles.
2. After perfectly smooth highway then city driving, parked and shut off car for 5-ish minutes. Started it, idled for about 3 minutes, started driving and it went rough and died 500feet later. Sat for about 10 minutes, started up...but this time I was too chicken to drive it, so had it towed to same dealer. They replaced all six injectors with the most recent version.
3. Normal around town, errand-running...ran great. Ordered a pizza, idled 15minutes then died. Waited a few minutes, it started and ran just well enough to get home (1.5miles), but I had to keep the revs up...and even when moving engine ran rough...like it was missing. Parked car in garage over night. Started fine this morning, but got the service triangle, and the check engine light is staying on.
This seems related to idling...maybe a sensor is getting hot causing intermittent failure? Anyone else have any straws I can grasp at?
I'm about to call the dealer, but thought I'd inquire with the the collective experience here...