E46 Peformance and Fuel economy

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Whitty - 25 Feb 2006 22:39 GMT

I have got a 2001 E46 320iSE 6 CYL..Sometimes when i start it ,it cuts out
and when it is running it feels sluggish.I have replaced the Spark Plugs,
Air filter, Fuel filter Oil & filter, but it still remains a problem.I am
currently getting about 23-25MPG...
Could anyone help me in the right direction..
Cheers.

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Niels Petersen - 26 Feb 2006 00:56 GMT

Could be a clogged catalytic converter. Have someone check the back
pressure through the oxygen sensor port in the exhaust pipe.

> I have got a 2001 E46 320iSE 6 CYL..Sometimes when i start it ,it cuts out
> and when it is running it feels sluggish.I have replaced the Spark Plugs,
[quoted text clipped - 4 lines]
>
>

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sgfan3 - 26 Feb 2006 01:00 GMT

My 2001 M3 (USA) was sputtering/cutting-out badly. Turns out 5 of the 6 ignition coils were bad. Had 'em replaced and it runs like new. BTW, my gas mileage was still good with the bad coils. Go figure.

> Could be a clogged catalytic converter. Have someone check the back
> pressure through the oxygen sensor port in the exhaust pipe.
[quoted text clipped - 5 lines]
>> Could anyone help me in the right direction..
>> Cheers.

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Whitty - 28 Feb 2006 16:06 GMT

Cheers for the reply.
Do you think that it could be the Oxygen Sensor itself..

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Cody - 01 Mar 2006 20:05 GMT

I went through a simliar issue with my 2003 E46 ... It was very sluggish
at higher speeds ... like a cylinder was "miss firing". Poor gas
mileage. After 4 trips to the dealer - replaced the Oxygen Sensor,
replaced the DME, spark plugs, etc... it was determined to be the #6
Ignition Coil ... they replaced all 6 of them under warranty ... runs
great since then. Getting arou d 30 MPG on average. There was a TSB
released this last summer for the E46's ... not sure if your year was
included, but might be worth a look.

Best of luck.

In article
<458cd5e79c377c396ba616af2fa187cb@localhost.talkaboutautos.com>,
nick@whitham1975.wanadoo.co.uk says...

> I have got a 2001 E46 320iSE 6 CYL..Sometimes when i start it ,it cuts out
> and when it is running it feels sluggish.I have replaced the Spark Plugs,
> Air filter, Fuel filter Oil & filter, but it still remains a problem.I am
> currently getting about 23-25MPG...
> Could anyone help me in the right direction..
> Cheers.

Reply to this Message