HPFP or LPFP/Filter?

airdude25 · 03-05-2022, 01:18 PM

Hey all, my 2011 135i N55 has had long starts, occasional stalls and is sluggish around 2500-3000 rpm. I just changed the the HPFP with a rein reman replacement. It fixed the long start, however when I accelerate with more than half throttle it throws up the yellow engine light and is really sluggish. Could this be a problem with the LPFP/Filter instead of the HPFP? Or something else entirely?

Aceway · 03-05-2022, 09:33 PM

What error codes does the car show?

airdude25 · 03-07-2022, 08:55 AM

Quote:

Originally Posted by Aceway

What error codes does the car show?

No error codes, only thing is the yellow half engine light in the screen that pops up under acceleration

AndyW · 03-07-2022, 08:50 PM

Quote:

Originally Posted by airdude25

No error codes, only thing is the yellow half engine light in the screen that pops up under acceleration

If you got limp mode you very likely have codes. What app do you have to read them?

03-05-2022, 01:18 PM	#1
airdude25 Registered 6 Rep 4 Posts Drives: 09 335i sedan Join Date: Jun 2018 Location: arkansas iTrader: (0)	HPFP or LPFP/Filter? Hey all, my 2011 135i N55 has had long starts, occasional stalls and is sluggish around 2500-3000 rpm. I just changed the the HPFP with a rein reman replacement. It fixed the long start, however when I accelerate with more than half throttle it throws up the yellow engine light and is really sluggish. Could this be a problem with the LPFP/Filter instead of the HPFP? Or something else entirely?
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03-05-2022, 09:33 PM	#2
Aceway Captain 455 Rep 875 Posts Drives: E82 135i / F25 28i Join Date: Feb 2018 Location: SoCal iTrader: (2)	What error codes does the car show?
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