Strange idle while in traffic

White340 · 03-25-2021, 07:02 AM

After about an hour drive I got stuck in traffic at the holland tunnel yesterday. For about ten minutes, traffic didn't really move. My car was in drive and i started feeling a little rumble from the engine/chasis. The rumble kind of felt like how it feels when the engine engages into first when crawling (DCT). The RPM needle didn't move though. I put it in neutral and it still did it a few more times. Once traffic got moving again it drove fine.

Should I be worried? The only thing I did differently is fill up using Mobil 93 for gas about 50 miles before this happened a few days ago. Normally I use BP gas.

Thanks for reading

bsmf8x · 03-25-2021, 09:07 AM

If the engine/car is rumbling and the rpm isn't budging that's weird af, probably not gas related

evoix · 03-25-2021, 10:34 AM

This happened to me after I got the spark plugs replaced. Now my car bogs in third gear under partial throttle. Seems to be getting worse but my lease is up in a month so not my problem anymore.

m4nual2016 · 03-25-2021, 06:51 PM

Was the AC on? I think the AC has a clutch and will make more noise when it kicks in.

N1rve · 03-25-2021, 08:55 PM

Quote:

Originally Posted by m4nual2016

Was the AC on? I think the AC has a clutch and will make more noise when it kicks in.

I feel like my car idles smoother with the AC on.

White340 · 03-26-2021, 12:26 PM

Quote:

Originally Posted by m4nual2016

Was the AC on? I think the AC has a clutch and will make more noise when it kicks in.

Ac was off. I was idling fine for a few minutes then felt like it was skipping/stalling but rpms didn't budge at all. I haven't been able to replicate it since. And no CEL was thrown. You think something could be stored? I have BimmerLink.

03-25-2021, 07:02 AM	#1
White340 Lieutenant Colonel 1393 Rep 1,986 Posts Drives: 2018 M3 Comp / 2022 X5 45e Join Date: Dec 2015 Location: NYC iTrader: (3)	Strange idle while in traffic After about an hour drive I got stuck in traffic at the holland tunnel yesterday. For about ten minutes, traffic didn't really move. My car was in drive and i started feeling a little rumble from the engine/chasis. The rumble kind of felt like how it feels when the engine engages into first when crawling (DCT). The RPM needle didn't move though. I put it in neutral and it still did it a few more times. Once traffic got moving again it drove fine. Should I be worried? The only thing I did differently is fill up using Mobil 93 for gas about 50 miles before this happened a few days ago. Normally I use BP gas. Thanks for reading __________________ 2022 X5 45e : AW/Tartufo 2018 M3 Competition : AW/SO 2016 340i xDrive : AW/CR (sold)
	Appreciate 0 Tweet Quote

03-25-2021, 09:07 AM	#2
bsmf8x Lieutenant Colonel 779 Rep 1,636 Posts Drives: F82 Join Date: Jan 2020 Location: NY iTrader: (1)	If the engine/car is rumbling and the rpm isn't budging that's weird af, probably not gas related
	Appreciate 1 White3401393.00 Quote

03-25-2021, 10:34 AM	#3
evoix Major 441 Rep 1,347 Posts Drives: X3m Evo IX Evo X Join Date: Jan 2014 Location: NY iTrader: (0)	This happened to me after I got the spark plugs replaced. Now my car bogs in third gear under partial throttle. Seems to be getting worse but my lease is up in a month so not my problem anymore.
	Appreciate 1 bsmf8x778.50 Quote

03-25-2021, 06:51 PM	#4
m4nual2016 Enlisted Member 11 Rep 34 Posts Drives: 2016 M4 Join Date: Jul 2020 Location: Atlanta, GA iTrader: (0)	Was the AC on? I think the AC has a clutch and will make more noise when it kicks in.
	Appreciate 0 Quote