R60 The stumble is back, really bad
OVERDRIVE
Joined: Jun 2014
Posts: 5,391
Likes: 576
From: earth PNW
agree with this, any car is going to stumble with a low rev in too high a gear. If the car is an automatic then software or other transmission problem is in play. If a manual then possibly operator error. I get a minor stumble in the 60-70 mph range sometimes, which I attribute to JB+ and/or octane issues.
3rd Gear
Joined: Jun 2007
Posts: 294
Likes: 0
From: Littleton, CO
Okay, I've had it back since the weekend, and apparently, I was out of gas ... but I didn't know it because my gauge read 100% full.
The fuel level is read from inside the low pressure fuel pump in the gas tank, so they replaced the pump and all is well now ... with less than a month to go under warranty.
So if you're over 30,000 miles and you get a hesitation like this out of nowhere with no codes, make them check for a loose wiring harness above the diff (pretty sure they meant the center diff).
On the upside, here's my new parts list. If this happened in June I would have been SOL
The fuel level is read from inside the low pressure fuel pump in the gas tank, so they replaced the pump and all is well now ... with less than a month to go under warranty.
So if you're over 30,000 miles and you get a hesitation like this out of nowhere with no codes, make them check for a loose wiring harness above the diff (pretty sure they meant the center diff).
On the upside, here's my new parts list. If this happened in June I would have been SOL
- ECU update
- coolant temp sensor
- knock sensor
- plugs
- coils
- turbo wastegate
- high pressure fuel pump
- low pressure fuel pump
3rd Gear
Joined: Sep 2019
Posts: 210
Likes: 9
From: ca
Hi, All stock, 2013 All4S stick, 64k miles. I got the stumbling issue when the car is in SPORT mode. There's a favorite on-ramp that I full throttle the car up to almost redline in first gear then change. Today for the first time it stumbled half-way up the on-ramp, first gear. At about 60 mph, ~5000rpm. Car acted like it was going to stop. Let-up and coaxed it onto the freeway. It finally evened out when I got onto the freeway. Has been doing it in SPORT mode at up throttle in 30mph range first gear, second gear. Just ordered a Veepeak OBD2 and will be testing when it gets here.
Last edited by SunBird; Dec 11, 2019 at 06:32 PM.
6th Gear
Joined: May 2018
Posts: 1,361
Likes: 246
From: Washington state
When was the last time your plugs were changed? If they are getting old putting it under boost and revving it like that can cause it to miss. Bad coils will as well. Do you have a CEL? You need to scan the codes with a scan tool that will read the BMW proprietary codes.
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jimmwaller
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Jul 15, 2018 04:07 PM