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      01-21-2013, 12:40 PM   #1
fs454
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Occasional very rough idle at startup followed by lack of power...fuel pump?

So lately I've been noticing my startup cranks have gotten a little bit longer. In preparation for my recent Boston to LA cross country trip, I told my dealer about it and took it in, citing that it really would not like to be caught somewhere in the middle of nowhere with a dying pump.

They didn't replace it, and I made it cross country with no issues. Now I've been here for a few weeks and yesterday morning when I started my car the idle shot to 2000 right away, then dropped really low below idle and started shaking for a few seconds before it caught itself again and returned to normal. As soon as I pulled out of my apartment complex and tried to accelerate, the car would barely gain speed no matter how much gas I was giving it. Nonetheless, I made it to my destination and 8 hours later when I started it up and drove home, all was normal again and the car had power.

I didn't have a check engine light or anything during this and still don't. Is it possible this is anything other than the fuel pump? My car's service records show that it had the HPFP replaced in mid 2010(not the latest pump?) It sucks having to wait until the thing grenades on me and ruins my day to get it fixed. Any advice? Also, if anyone's in the area, what's the best Los Angeles/Burbank area BMW dealer?


Thanks!
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      01-21-2013, 12:46 PM   #2
135Pats
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Codes?
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      01-22-2013, 07:21 PM   #3
fs454
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No check engine light, but I plugged in my generic (but decent) code scanner and it brought up a bunch of seemingly bogus codes:

P0000
C0141
P3232
B2A50
B22AA
P22AA
another B2A50
B2AAA


None of these seem to mean anything at all, according to some quick googling, but they weren't there before. I've driven to work since the incident and took it on a hard drive up Mulholland with no issues, odd.
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      02-01-2013, 09:14 PM   #4
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My car does this every once in a while also, From what i have researched its either time to have the valves walnut blasted or the spark plugs need to be changed or a bad injector. I'm leaning to do the valves and plugs because i'm sure they need it and see if it fixes my problem.
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