Quantcast
Channel: BimmerBoost - N54, N55, S55, N52
Viewing all articles
Browse latest Browse all 15106

4F70 Engine over speed?

$
0
0
This is the second time it has happened, Both times is when I push the car hard and throws this code along with 51AE signal from Engine ECU not plausible: brake switch, CF33 Message from Engine control unit doesn't exist. All 3 are trans code.
When the trans malfunction, DSC and brake light comes on the dash, car will not drive as if I was in neutral but shows D5 on the dash. Both time it happened I was either in S3 about to shift to S4 or a second into shifting into S4. The engine who rev up and down until I pull over and restart the car. Doesn't seem to do it with Less power and boost on pump but I haven't pushed it as hard since the first time it has happened.
Only happens when I'm using E60.
Mods:
Jb4 G5 ISO map 7 (when on e60)
BMS E85 flash
DP
FMIC
Inline LPFP from SteveAZ
CPE CP with Tial BOV
Alpina Trans Flash

Viewing all articles
Browse latest Browse all 15106

Trending Articles