03-06-2024, 07:22 PM | #1 |
Registered
0
Rep 3
Posts |
Help!! RPM choked when cold start ends
Hello, Bimmer Experts,
Help me out, I recently got my F82 M4 ZCP, 48000 km about 30000 miles, car is stock. The issue is that right right cold start, rpm would raise suddenly, then drop to normal rmp range. Sometimes, it’s just a slight raise, sometimes it’s will raise couple times then drop. Almost feel like my engine choked. Check the clips. Sec 29-32 is when the cold start ends and rmp start to up and down for no reason This doesn’t happen all the time. Some time it’s worse sometimes it’s less obvious. Don’t know if it’s normal for f82. Somebody may experience the same issue? https://youtube.com/shorts/rfvJFuN3T...0hlW7EGxouns3V |
03-06-2024, 07:30 PM | #2 | |
Racecar Driver
1294
Rep 1,965
Posts
Drives: BMW M4
Join Date: Mar 2019
Location: Beverly Hills, California
|
Quote:
__________________
N1rve
2019 BMW ///M4 - Alpine White | Sakhir Orange/Black Leather | M-DCT | Executive Package | 19" Black 437M Wheels | Carbon Fiber Trim | Sunroof | Active Blind Spot | Heated Steering Wheel | Adaptive M Suspension |
|
Appreciate
0
|
03-06-2024, 07:37 PM | #3 |
Registered
0
Rep 3
Posts |
|
Appreciate
0
|
03-06-2024, 10:42 PM | #4 |
Racecar Driver
1294
Rep 1,965
Posts
Drives: BMW M4
Join Date: Mar 2019
Location: Beverly Hills, California
|
|
Appreciate
0
|
03-07-2024, 12:31 AM | #6 | |
I'm Batman!
3948
Rep 1,477
Posts |
Quote:
OP, try changing the plugs maybe? Mine was idling a bit rough when the plugs were due for a change.
__________________
S55, 2JZ, M48.00 |
|
Appreciate
0
|
03-07-2024, 01:07 PM | #8 |
Racecar Driver
1294
Rep 1,965
Posts
Drives: BMW M4
Join Date: Mar 2019
Location: Beverly Hills, California
|
I just got my plugs changed a week ago and my car is the same with that little skip of a beat.
__________________
N1rve
2019 BMW ///M4 - Alpine White | Sakhir Orange/Black Leather | M-DCT | Executive Package | 19" Black 437M Wheels | Carbon Fiber Trim | Sunroof | Active Blind Spot | Heated Steering Wheel | Adaptive M Suspension |
Appreciate
0
|
03-07-2024, 05:16 PM | #10 |
Major General
2210
Rep 5,648
Posts |
Sounds normal to me. Do you have an aftermarket intake? With an aftermarket intake, my rpms jumped around more once the intake was installed. It got worse after I turned off the cold start. I’d have to wait at least 30 sec otherwise it felt like it would stall if I inched forward too soon
|
Appreciate
1
YXEM5185.00 |
03-07-2024, 08:21 PM | #11 | |
Private First Class
185
Rep 156
Posts |
Quote:
Where I live it gets quite cold, -30C. With my dinan cold air intakes, my F80 cold starts can be quite an event. At times it will even stall. I used to worry but it turns out it's pretty common. Chalk it up as one of the many strange behaviors ours M's make. |
|
Appreciate
0
|
Post Reply |
Bookmarks |
|
|