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Rough cold start with 35is
Posted: Fri Nov 03, 2017 4:55 pm
by Ozie
Z4M-2006 wrote: ↑Wed Nov 01, 2017 10:09 am
Yea,
Classic HPFP problem
Thanks. Got also new symptom...
If I try to accelerate harder car starts to "shake" bit like hitting the rev limiter. No warning lights and no fault codes. Earlier got few codes from same aymptom: Instrument Cluster shutdown A559 and Motor Control - ECU 55 "sorry, unknown DTC fault" 00DE51. I mean is this also HPFP problems or something else?
Rough cold start with 35is
Posted: Fri Nov 03, 2017 5:11 pm
by Z4M-2006
The HPFP sounds like its faulting and dropping pressure,under demand the fuel pressure is dropped to the injectors and misfires start to happen.
Rough cold start with 35is
Posted: Fri Nov 03, 2017 5:32 pm
by tomscott
Another with injector issues
Rough cold start with 35is
Posted: Fri Nov 03, 2017 6:42 pm
by Z4M-2006
All "N" derived engines have injector problems...
Dont have to have double windmills on em
Rough cold start with 35is
Posted: Wed Nov 22, 2017 6:55 pm
by Ozie
HPFP was replaced yesterday. Ignition is now much faster and better. Starts after first crank. No error codes while accelerate. Total cost was about 950 €/ $1120 / £850.
Still noticed vibration when tried to accelerate uphill with 7th gear from 40 mph to 60 mph. More in here
viewtopic.php?f=45&t=89585
Rough cold start with 35is
Posted: Wed Nov 22, 2017 7:15 pm
by Z4M-2006
Is it bringing EML on ?
Coil packs or vanos actuators would be my next thing..
Rough cold start with 35is
Posted: Wed Nov 22, 2017 7:20 pm
by Smartbear
Ozie wrote: ↑Wed Nov 22, 2017 6:55 pm
HPFP was replaced yesterday. Ignition is now much faster and better. Starts after first crank. No error codes while accelerate. Total cost was about 950 €/ $1120 / £850.
Still noticed vibration when tried to accelerate uphill with 7th gear from 40 mph to 60 mph. More in here
viewtopic.php?f=45&t=89585
That sounds a very low speed to be in 7th & accelerating uphill, maybe the vibration is just the engine labouring at such low rpm?
Rob
Rough cold start with 35is
Posted: Wed Nov 22, 2017 9:50 pm
by Ozie
Z4M-2006 wrote: ↑Wed Nov 22, 2017 7:15 pm
Is it bringing EML on ?
Coil packs or vanos actuators would be my next thing..
Nope. No codes or lights.
Rough cold start with 35is
Posted: Wed Nov 22, 2017 9:57 pm
by Ozie
Smartbear wrote: ↑Wed Nov 22, 2017 7:20 pm
Ozie wrote: ↑Wed Nov 22, 2017 6:55 pm
HPFP was replaced yesterday. Ignition is now much faster and better. Starts after first crank. No error codes while accelerate. Total cost was about 950 €/ $1120 / £850.
Still noticed vibration when tried to accelerate uphill with 7th gear from 40 mph to 60 mph. More in here
viewtopic.php?f=45&t=89585
That sounds a very low speed to be in 7th & accelerating uphill, maybe the vibration is just the engine labouring at such low rpm?
Rob
It's way more rough. You'll get that wtf feeling when it hits. Bit like hitting rev limiter or wheel spin dsc engadged (no dsc lights) by suprise.