Bmw e46 rough idle loss of power. Feb 3, 2026 · 2001 bmw 330i been dealing with this rough idle misfires issue for about a week these are the things ive replaced in the past months while ive had the car -ccv -vcg including metal vc (because plastic one was warped) -all vacum lines and caps on the rear of the intake -new plugs -new intake gasket -refreshed cooling system - intake boots Nov 20, 2018 · Similar Threads Rough idle, loss of power, no throttle response (The BMW Curse) By Capella34 in forum General BMW Mechanical Help sponsored by RM European Auto Parts Replies: 11 Last Post: 02-05-2017, 11:58 AM Jan 4, 2012 · Rough Idle and Loss of power after warm up 1 reading Jump to Latest 41K views 17 replies 8 participants last post by chungachguk Apr 23, 2012. Replaced it with one from Lordco still had the same issue. Come join the discussion about M performance, turbo kits, engine swaps, builds, modifications, classifieds, troubleshooting, maintenance, and more! Mar 28, 2025 · Explore common idle problems in BMW E46, their causes, symptoms, and effective troubleshooting tips for smooth performance. The other day it started to run really rough at idle and would stall when shifting from Reverse to Drive and when starting from a stop. Oct 14, 2023 · I don't think the intake boot condition is the reason for this immediate failure of power - like it didn't just all of a sudden fall apart (this looks like a bad manufacturing unit that slowly deteriorated from heat over the past year). Mar 10, 2015 · Hello, Having a specific problem with 1998 E46 M52B20TU. 5L) inline-6 engines, listen up! If you're getting rough idle, loss of power, or a check engine light related to the intake system, your DISA valve (aka intake manifold flap adjuster) might be failing. The diagnostics show a misfire fault, although the spark plugs and coils are new. >> Vacuum Leak or PCV Valve: A broken vacuum hose or a bad PCV valve (very common in Souls) can cause an irregular air- fuel mixture, resulting in a rough idle (<1k RPMs) and stalling. Nov 12, 2023 · A forum community dedicated to BMW E46, E90, and F30 owners and enthusiasts. hoegwd nrc uufbr bejxl khwucc mejhpq ccb slrzuqv qvfyknc rjzo