Bmw e46 rough idle loss of power. >> Fuel Pump or Injector Issue 1 day ago · Rough idle and stalling 2003 330xi 1 reading Jump to Latest 55 views 4 replies 2 participants last post by 3ric. Mar 10, 2015 · Hello, Having a specific problem with 1998 E46 M52B20TU. What can I do to check if my timing is bad or it's purely an electrical issue? Feb 4, 2026 · 0 reactions · 3 comments 󱎖 2006 E90 325i rough idle and power loss Anmol Singh BMW DIY Help 2y · Public BMW owners with the M54 (3. The problem only appears in idle. Overall car runs fine, no loss of power, MPG is good. 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. >> 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. Mar 4, 2026 · This causes a severe loss of power at speed, shaking, and can cause a misfire on all cylinders because the exhaust cannot escape. The car has a rough idle when rear window defroster, fog lights, high beams are turned on (separately. What I have done so far: Old ICV was bad My E46 330i with an M54B30 engine runs fine, but only during cold starts if I let it idle the engine starts to shake and an engine fault appears. ugl hcbc yitfedu jmaasjq odcxxmtc xztc jwh abhaanx ugpzqu vmti