530d fluctuating revs when held at 1200rpm
#11
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My Ride: bmw 530d 2004
Hi guys I know it’s bit too late to ask but did anyone sorted this issue?
i have been reading about this thread which I am having same issue as mine 530d with M57N also fluctuate at 1200rpm. I was thinking maybe high pressure fuel pump regulator or may be one of injectors is playing up. I did check with ISTA and INPA as well and all the injectors seems to work fine.
hope someone will reply on this thread.
also I did check the module of fuel pump which is absolutely fine.
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Shahid Mehmood Jutt (10-24-2020)
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My Ride: 05 530i M54
Model Year: 05 530i
Engine: 3.0 M54
It's an electrical/power issue you have to find. Either Alternator, compressor, battery issue. It's pulling more power than something can handle
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Shahid Mehmood Jutt (10-24-2020)
#15
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My Ride: bmw 530d 2004
changed glow plugs and control unit
both thermostats
alternator
new battery
gearbox service
I am thinking about high pressure fuel pump regulator 🙂.
any thoughts please??
Last edited by Shahid Mehmood Jutt; 10-24-2020 at 12:21 PM.
#16
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My Ride: 05 530i M54
Model Year: 05 530i
Engine: 3.0 M54
Have you serviced the gearbox? Have you tested your pump? Sadly, when you get fluctuation it's a prices of elimination. Do you have ista and INPA
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Shahid Mehmood Jutt (10-24-2020)
#17
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I know what you mean 😞. But I don’t wanna let her go,I know she’s 16 years old now. Yeah I did service the gearbox with genuine ZF parts and I do have ISTA and INPA.
Have you got any ideas hence asking about ISTA and INPA mate?
Thanks a lot
Have you got any ideas hence asking about ISTA and INPA mate?
Thanks a lot
#18
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My Ride: 05 530i M54
Model Year: 05 530i
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You shouldn't have and codes. I've know the map sensor, pump, alternator, battery or gearbox solve this issue. But have heard of other sensors solving RPM fluctuation issues.
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