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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > NA Engine (non-turbo) / Drivetrain / Exhaust Modifications > Idle surge and stalling



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      03-01-2024, 01:59 AM   #1
misapprehending
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Drives: E92 325i
Join Date: Jan 2022
Location: QLD, Australia

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Angry Idle surge and stalling

Hey guys, trying to diag an idle surge with my 2010 325i (N52B25).

Idle surges at start up, surging to 1.5k and back down repeatedly.

When stopped after the car is warmed up, the RPM needle moves up and down slightly.

Occasionally when sitting idle in heavy traffic, the car will lurch forward in an attempt to prevent stalling (note the car is an automatic with I believe the GM trans? the metal pan)
Appreciate 0
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