Subtle hesitating? On the highway

PortDover335xi · 03-19-2019, 01:41 PM

Hey guys, I'm having a subtle issue with my 2010 335xi and I want to see if anyone has had this before. At cruising speed (80kms to 100kph) I can feel a very subtle hesitation like the car is pushing against itself. It's like a slow pulsing but other than that nothing is wrong. Anyone ever felt this before?

I bought this car from a used dealer less than a month ago with the CEL on. They have ordered a replacement part but it hasn't come in yet and I don't have a scanner to read the possibly new codes that it might be throwing.

relative4 · 03-19-2019, 01:44 PM

Quote:

Originally Posted by PortDover335xi

I don't have a scanner

Step 1: Remedy this situation.

PortDover335xi · 03-19-2019, 02:17 PM

Yeah I've been waiting to buy the Foxwell BMW scanner. It's going in the next few days I'll get them to check it again

b92 · 03-19-2019, 02:47 PM

You bought a car with a CEL on without scanning the codes first?

Assuming your 2010 is an N54, the issue sounds like it could be resolved through the usual maintenance means, which start with walnut blasting the intake valves & installing new spark plugs.

PortDover335xi · 03-19-2019, 02:51 PM

Well the light came on the way home, took it back they determined a pinched wire on an aftermarket charge pipe. They want to replace it with a factory one with new wiring. Sounds bad I know. I just freakin love the car. I've done some maintenance already, the OFHG on my own, and changed the PCV valve.

PortDover335xi · 03-19-2019, 02:56 PM

Also when I had the intake manifold off it did look black inside, so it definitely needs a walnut blasting

PortDover335xi · 03-19-2019, 07:39 PM

Well the light came on the way home, took it back they determined a pinched wire on an aftermarket charge pipe. They want to replace it with a factory one with new wiring. Sounds bad I know. I just freakin love the car. I've done some maintenance already, the OFHG on my own, and changed the PCV valve.

relative4 · 03-19-2019, 08:01 PM

You know the charge pipe contains no wiring, right?

PortDover335xi · 03-19-2019, 10:29 PM

I did not, I figured there was a sensor or push clip somewhere I cannot see. The Service manager supposedly has a connection at the local BMW dealership and gave scanned codes to him and that is what he came back with. I'd prefer to keep the HKS charge pipe and BOV. Guess I'll have to scan the code myself before I take it back to the dealership

Jesda · 03-20-2019, 12:08 AM

The symptom just sounds like a bad ignition coil.

PortDover335xi · 03-20-2019, 02:30 AM

I forgot I had a cheap OBD2 Bluetooth scanner. I got the P0420/P0430 codes. I've read that's either 02 sensors, Catalytic Converters or Vanos. I'm going to have a fun chat at the dealership tomorrow.

type-dRew · 03-20-2019, 08:17 AM

Keep in mind, if you bought a used car, especially one at a random non-bmw dealer and the car was sold 'as is, we owe nothing' (most likely a document you signed at purchase) they are not obligated to fix anything for you. So if you intend on your chat going anywhere productive, realize they are not on the hook to fix your car for you at all.

Unless you did in fact have an agreement of warranty or there was an implied idea of if anything goes wrong bring it back, then dont listen to me and good luck.

PortDover335xi · 03-20-2019, 09:37 AM

The only thing I have really is a 30 day if I'm not happy with it return it type deal. It's a massive dealership, and they were quick to ask me for a google+ review when I left with the car. There was no indication initially that they would not fix what was wrong.

ewicky · 03-20-2019, 11:18 AM

Quote:

Originally Posted by PortDover335xi

Well the light came on the way home, took it back they determined a pinched wire on an aftermarket charge pipe. They want to replace it with a factory one with new wiring...

Quote:

Originally Posted by relative4

You know the charge pipe contains no wiring, right?

Wrong. Charge pipe has a sensor, which has wiring.

Take what you read on these forums with a grain of salt. There's a lot of misinformation.

nsjames · 03-20-2019, 11:28 AM

Quote:

Originally Posted by PortDover335xi

Yeah I've been waiting to buy the Foxwell BMW scanner. It's going in the next few days I'll get them to check it again

why?

Buy a bimmer geeks adapter and protool. spend less, get the equivalent of INPA in your phone.

or if you're super cheap. Buy a $20 can cable from amazon and download the software for free.

get factory level diagnostics.

03-19-2019, 01:41 PM	#1
PortDover335xi Private 14 Rep 77 Posts Drives: 2010 335xi coupe Join Date: Feb 2019 Location: Port dover iTrader: (0)	Subtle hesitating? On the highway Hey guys, I'm having a subtle issue with my 2010 335xi and I want to see if anyone has had this before. At cruising speed (80kms to 100kph) I can feel a very subtle hesitation like the car is pushing against itself. It's like a slow pulsing but other than that nothing is wrong. Anyone ever felt this before? I bought this car from a used dealer less than a month ago with the CEL on. They have ordered a replacement part but it hasn't come in yet and I don't have a scanner to read the possibly new codes that it might be throwing.
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03-19-2019, 02:17 PM	#3
PortDover335xi Private 14 Rep 77 Posts Drives: 2010 335xi coupe Join Date: Feb 2019 Location: Port dover iTrader: (0)	Yeah I've been waiting to buy the Foxwell BMW scanner. It's going in the next few days I'll get them to check it again
	Appreciate 0 Quote

03-19-2019, 02:47 PM	#4
b92 Major 540 Rep 1,040 Posts Drives: E92 335is, 6MT Join Date: Feb 2016 Location: Rhode Island iTrader: (2)	You bought a car with a CEL on without scanning the codes first? Assuming your 2010 is an N54, the issue sounds like it could be resolved through the usual maintenance means, which start with walnut blasting the intake valves & installing new spark plugs. __________________ 2011 E92 335is, Space Grey/Coral Red, 6MT. RB 2+, Wedge tuned. E85 PI coming soon.
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03-19-2019, 02:51 PM	#5
PortDover335xi Private 14 Rep 77 Posts Drives: 2010 335xi coupe Join Date: Feb 2019 Location: Port dover iTrader: (0)	Well the light came on the way home, took it back they determined a pinched wire on an aftermarket charge pipe. They want to replace it with a factory one with new wiring. Sounds bad I know. I just freakin love the car. I've done some maintenance already, the OFHG on my own, and changed the PCV valve.
	Appreciate 0 Quote

03-19-2019, 02:56 PM	#6
PortDover335xi Private 14 Rep 77 Posts Drives: 2010 335xi coupe Join Date: Feb 2019 Location: Port dover iTrader: (0)	Also when I had the intake manifold off it did look black inside, so it definitely needs a walnut blasting
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03-19-2019, 07:39 PM	#7
PortDover335xi Private 14 Rep 77 Posts Drives: 2010 335xi coupe Join Date: Feb 2019 Location: Port dover iTrader: (0)	Well the light came on the way home, took it back they determined a pinched wire on an aftermarket charge pipe. They want to replace it with a factory one with new wiring. Sounds bad I know. I just freakin love the car. I've done some maintenance already, the OFHG on my own, and changed the PCV valve.
	Appreciate 0 Quote

03-19-2019, 08:01 PM	#8
relative4 Major 611 Rep 1,272 Posts Drives: '08 335xi E90 MT stage 1+ Join Date: Feb 2019 Location: Denver, CO iTrader: (0)	You know the charge pipe contains no wiring, right?
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03-19-2019, 10:29 PM	#9
PortDover335xi Private 14 Rep 77 Posts Drives: 2010 335xi coupe Join Date: Feb 2019 Location: Port dover iTrader: (0)	I did not, I figured there was a sensor or push clip somewhere I cannot see. The Service manager supposedly has a connection at the local BMW dealership and gave scanned codes to him and that is what he came back with. I'd prefer to keep the HKS charge pipe and BOV. Guess I'll have to scan the code myself before I take it back to the dealership
	Appreciate 0 Quote

03-20-2019, 12:08 AM	#10
Jesda First Lieutenant 144 Rep 350 Posts Drives: 2008 E93 N52 78k Join Date: Apr 2017 Location: Detroit iTrader: (0)	The symptom just sounds like a bad ignition coil. __________________ 08 E93 N52 170k
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03-20-2019, 02:30 AM	#11
PortDover335xi Private 14 Rep 77 Posts Drives: 2010 335xi coupe Join Date: Feb 2019 Location: Port dover iTrader: (0)	I forgot I had a cheap OBD2 Bluetooth scanner. I got the P0420/P0430 codes. I've read that's either 02 sensors, Catalytic Converters or Vanos. I'm going to have a fun chat at the dealership tomorrow.
	Appreciate 0 Quote

03-20-2019, 08:17 AM	#12
type-dRew Major 641 Rep 1,245 Posts Drives: 2009 335i xDrive Join Date: Feb 2019 Location: Newport MI iTrader: (0)	Keep in mind, if you bought a used car, especially one at a random non-bmw dealer and the car was sold 'as is, we owe nothing' (most likely a document you signed at purchase) they are not obligated to fix anything for you. So if you intend on your chat going anywhere productive, realize they are not on the hook to fix your car for you at all. Unless you did in fact have an agreement of warranty or there was an implied idea of if anything goes wrong bring it back, then dont listen to me and good luck.
	Appreciate 0 Quote

03-20-2019, 09:37 AM	#13
PortDover335xi Private 14 Rep 77 Posts Drives: 2010 335xi coupe Join Date: Feb 2019 Location: Port dover iTrader: (0)	The only thing I have really is a 30 day if I'm not happy with it return it type deal. It's a massive dealership, and they were quick to ask me for a google+ review when I left with the car. There was no indication initially that they would not fix what was wrong.
	Appreciate 0 Quote