Rough Idle and Vibration While Driving

LimeRock · 02-19-2021, 10:47 AM

Quote:

Originally Posted by 2kaccordocoupe

No offence taken. $80K car or $200 lawn mower, an ICE is an ICE. The same evidence that you say doesn't work has an equal amount of evidence that suggests it does work.

I do agree with you comment about the service department. BMW should really be addressing the concern and not dismissing it as 'in your head'. Find another service dept.

Agreed. I worry about the electrical components that could get thrown off with a foreign substance running through the engine. Also the potential warranty trouble if the car throws a code and a tech (somehow) traces it back to the Seafoam. It seems like dealers are more and more trigger happy to deny warranty claims these days.

2kaccordocoupe · 02-19-2021, 10:59 AM

Quote:

Originally Posted by LimeRock

Agreed. I worry about the electrical components that could get thrown off with a foreign substance running through the engine. Also the potential warranty trouble if the car throws a code and a tech (somehow) traces it back to the Seafoam. It seems like dealers are more and more trigger happy to deny warranty claims these days.

Yup very possible.

The OP bought a brand new car with a brand new car warranty. They should not be tolling the fuel additive section of the auto parts store as if it was a 10 year old vehicle to DIY a solution that the service department should be on the hook for.

richard in NC · 02-19-2021, 05:00 PM

Fixed! Maybe... I added a “Techron” fuel additive injector cleaner to a tank. It’s supposed to be for new or old engines. After the 200 mile trip, it’s now much smoother at idle and while cruising. I also got 21.5 mpg including some in town messing around.

BMWZ4 · 02-19-2021, 05:05 PM

Occam's razor...simplest solution is usually the right one!

LimeRock · 02-19-2021, 07:15 PM

Nice! Now go enjoy the beast!

sd306 · 02-20-2021, 01:49 PM

Quote:

Originally Posted by richard in NC

Fixed! Maybe... I added a “Techron” fuel additive injector cleaner to a tank. It’s supposed to be for new or old engines. After the 200 mile trip, it’s now much smoother at idle and while cruising. I also got 21.5 mpg including some in town messing around.

My car was also sitting for a year. Don't have any issues besides idle shakes the car in very cold weather after immediate startup. Going to try this too. It's mostly hot where I am so never notice it.

richard in NC · 06-17-2021, 02:03 PM

So, I took my X3M to a different dealership for the state inspection and to look for the cause of the vibration my car has had since new.

They found a broken exhaust bracket, right under the drivers floorboard. It was causing an exhaust system rattle that was transferring to the car and steering wheel!

They have to order a replacement part but with it removed, the car is 90% better. Even the ride is improved as I was probably feeling and hearing the exhaust system flex over every bump.

Wow!

02-19-2021, 05:00 PM	#25
richard in NC Colonel 1229 Rep 2,602 Posts Drives: 2009 Z4 35i Join Date: Jul 2009 Location: Charlotte, NC iTrader: (0)	Fixed! Maybe... I added a “Techron” fuel additive injector cleaner to a tank. It’s supposed to be for new or old engines. After the 200 mile trip, it’s now much smoother at idle and while cruising. I also got 21.5 mpg including some in town messing around.
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02-19-2021, 05:05 PM	#26
BMWZ4 Major General 1908 Rep 5,102 Posts Drives: '23 X1/'23 Allroad Progressiv Join Date: Apr 2010 Location: Toronto iTrader: (1)	Occam's razor...simplest solution is usually the right one! __________________ '11 Z4 30i (retired);'11 X3 28i (retired); '15 M235i Stage 1 Dinan (recalled & crushed); '16 M235i Stage 3 Dinan (retired); '15 X3 28i (retired); '14 328i (retired), 2019 X3M40i (retired); Loaded '18 X1 (retired); Loaded '20 X3MC DG, Black/Tan Merino (retired); Loaded '23 X1 Cape York green and Red/Black interior; '23 Audi A4 Allroad Progressiv
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02-19-2021, 07:15 PM	#27
LimeRock Lieutenant 672 Rep 405 Posts Drives: BMW & Porsche Join Date: Dec 2020 Location: Windy City iTrader: (0)	Nice! Now go enjoy the beast!
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06-17-2021, 02:03 PM	#29
richard in NC Colonel 1229 Rep 2,602 Posts Drives: 2009 Z4 35i Join Date: Jul 2009 Location: Charlotte, NC iTrader: (0)	So, I took my X3M to a different dealership for the state inspection and to look for the cause of the vibration my car has had since new. They found a broken exhaust bracket, right under the drivers floorboard. It was causing an exhaust system rattle that was transferring to the car and steering wheel! They have to order a replacement part but with it removed, the car is 90% better. Even the ride is improved as I was probably feeling and hearing the exhaust system flex over every bump. Wow! __________________ 2020 X3M non-comp, Alpine White over black : Exec Pkg, ventilated M Sport seats, 20"s 2020 M2 Comp, Sunset Orange/Blk: Orange stitching, DCT, exec pkg, bicolor rims Gone '18 M550i, '16 X4 M40i, '15 M5, '13 X3 35i, '12 335is, '11 X5 50i, '09 Z4 35i, '08 550i, 06 X3, 06 650i, '02 M5, '99 540i
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