Occasional very rough idle at startup followed by lack of power...fuel pump? - BMW 1 Series Coupe Forum / 1 Series Convertible Forum (1M / tii / 135i / 128i / Coupe / Cabrio / Hatchback) (BMW E82 E88 128i 130i 135i)

fs454 · 01-21-2013, 12:40 PM

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!

135Pats · 01-21-2013, 12:46 PM

Codes?

fs454 · 01-22-2013, 07:21 PM

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.

jimmys91 · 02-01-2013, 09:14 PM

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.

01-21-2013, 12:40 PM	#1
fs454 Private Drives: 2009 BMW 135i M-Sport 6MT Join Date: Jun 2012 Location: Wakefield, MA Posts: 90 iTrader: (0)	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! __________________ 2009 BMW 135i - Alpine White/Coral Red - M-Sport+Premium + 6-Speed Manual
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01-21-2013, 12:46 PM	#2
135Pats Gooby Pls. Drives: 135i Join Date: May 2012 Location: Maryland Posts: 1,556 iTrader: (0)	Codes? __________________ E88 FBO N54 Alpinweiss/Coral Red/Meisterschaft Race/Berk Resonated/Macht Schnell 3"/ER CP/Synapse/VRSF FMIC/BMS DCI/BMS Thermostat Delete/Rob Beck PCV/BMS OCC/Cobb 4.02/Alpina TCU Flash/Icarbon/3D Design/Cyba

01-22-2013, 07:21 PM	#3
fs454 Private Drives: 2009 BMW 135i M-Sport 6MT Join Date: Jun 2012 Location: Wakefield, MA Posts: 90 iTrader: (0)	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. __________________ 2009 BMW 135i - Alpine White/Coral Red - M-Sport+Premium + 6-Speed Manual

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02-01-2013, 09:14 PM	#4
jimmys91 New Member Drives: 2008 135I Join Date: Aug 2012 Location: Nashville, TN Posts: 16 iTrader: (0)	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.