BMW 325i E46 Rough Idle Popping Sound

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Category:

Sports

Tags:

• E46
• Rough
• Idle
• Popping
• Sound

[thenewserver]

hi ,I have the same problem .

can u tell me what exacly what i have to change

thankyou



[trinjaminternational]

@thenewserver - see my last comment below - Oil Separator Valve

[kokaxxx]

Change AIR FILTER or check MASS AIR FLOW SENSOR thats what i have done and now it's all GOOD

[triniguy99]

There's one last question i need to bother you about: I noticed that if I start up (experience rough idle, erratic RPM like you did) and wait a few minutes for the temperature to reach the typical mid-level on the coolant gauge, then switch off the engine, then start it up again, the car works like nothing was ever wrong! Was this your experience as well? Thanks..

[triniguy99]

@trinjaminternational

There's one last question i need to bother you about: I noticed that if I start up (experience rough idle, erratic RPM like you did) and wait a few minutes for the temperature to reach the typical mid-level on the coolant gauge, then switch off the engine, then start it up again, the car works like nothing was ever wrong! Was this your experience as well? Thanks..

[triniguy99]

@trinjaminternational

There's one last question i need to bother you about: I noticed that if I start up (experience rough idle, erratic RPM like you did) and wait a few minutes for the temperature to reach the typical mid-level on the coolant gauge, then switch off the engine, then start it up again, the car works like nothing was ever wrong! Was this your experience as well? Thanks..

[triniguy99]

@trinjaminternational

I'm going to order the Oil Sep Valve and connector hoses, but there's one last thing I need to ask: I notice that it starts up very rough (erratic RPM..like in your case) and if I leave it to heat up for a couple minutes, then switch off the engine and after waiting a few seconds switch in back on, the car works like nothing was ever wrong- smooth idle, smooth acceleration. Was this your experience as well?

[trinjaminternational]

@triniguy99 Yup, instantly. 

[triniguy99]

@trinjaminternational Ok thanks for the reply. Did the popping sound disappear when you changed the Oil Separator valve?

[trinjaminternational]

@triniguy99 I was able to drive normally without the sputter, it became worse over time when it would eventually stall whenever I came to a stop. The idle would hunt erratically at idle also.

[triniguy99]

@trinjaminternational : I have a '99 323i with the same popping noise. It occurs only on a cold startup and the engine idles very rough. If put into drive it will sputter and misfire. However once the engine warms up and I power the engine off, wait 5 seconds and then restart, I can drive normal without any sputtering! Does this problem sound like what you have (with the Oil Separator valve)? Thanks..