Power lost sometimes. - BMW Forum

HENNARED · 04-23-2009, 04:04 PM

Hozit...I drive a 318i sportspack 2002 model.The timing sencors on the camshaft and crank died about 6 months ago,after about R5500 thats about 900$ it were replaced.The car was its old self again.Nowadays its losing power when the revs go between 3000 and 3500 rpm..its not all the time,just sometimes...the dealers can't find any problem with it

and its frustrating the hell out of me.The car feels like when a spark plug died when its doing this.Can anybody help me please..i'm out of ideas.

HENNARED · 04-25-2009, 07:33 AM

Seems like nobody knows the answer to my problem.

sPoNgE-SA · 04-25-2009, 07:57 AM

Are you based in SA bud? I have a 2002 318i and been working on this problem for months.

HENNARED · 04-25-2009, 08:01 AM

Yes i am bro...and this problem is making me the moer in..

marti5 · 04-25-2009, 01:22 PM

Maybe a coil pack faulty, gets hot and intermittently cuts in and out,what I would do is pull the all the plugs and see if one is different from the rest, then get back to me.

HENNARED · 04-25-2009, 02:08 PM

I have already done that mate,the coil pack is all 4 stored in 1 plastick box an can't be opened..installed new plugcables..new plugs..

marti5 · 04-26-2009, 05:58 AM

Also worth a look, splits or leaks on the air intake hoses and the normal culprit MAF.

You could try resetting the adaptations to the DME and EGS.

HENNARED · 04-26-2009, 07:34 AM

Ok what's the MAF,DME,EGS..I'll have a look at the airintake connections.

marti5 · 04-26-2009, 08:07 AM

The DME or ECU is your car,s electronic brain and the EGS is the gearboxes brain, they basically learn your driving style, I rest mine after the wife has been driving, you can guess why, but you do need diagnostics for this as I don't know if the battery reset works?.

The MAF is an Air flow Meter situated between your air box and throttle body, with an electric connector from it, this some times gets dirty and needs a clean, goolge search should help you on that, rather than me write a whole page on it!! also you may want to give the throttle body a clean whilst your at it, Brake cleaner is the preferred method.

HENNARED · 04-26-2009, 12:09 PM

Alright i know what you're talking about..wasn't sure about the meaning of what u have suggested because i don't own a workshopmanual for the car.Had the car at the agents the other day,done diagnostics but couldn't find anything.I personally think it's something rather small causing the problem,like you've siad maybe dirt in the connections..i will let you know.

marti5 · 04-26-2009, 02:55 PM

Maybe worth getting a re-map of the ECU.

sPoNgE-SA · 05-05-2009, 10:40 AM

I've had this same problem for sometime now. Also stay in SA.

marti5: when you clean the throttle, toothbrush and all - can you allow the throttle to move while cleaning it ?

didn't know that that Gauze where the MAF get's dirty? What can that been cleaned with?

HENNARED · 05-05-2009, 12:00 PM

Hozit Mate,i'm Still Strugling With This Problem As Well.where Do U Stay Bro?

marti5 · 05-05-2009, 12:14 PM

What can that been cleaned with?

A can of carb cleaner 3 damn good blasts should sort the MAF, if the MAF's ok that is ?

Yes you can allow the throttle to move.

sPoNgE-SA · 05-06-2009, 06:52 AM

Quote:

Originally Posted by marti5

What can that been cleaned with?

A can of carb cleaner 3 damn good blasts should sort the MAF, if the MAF's ok that is ?

Yes you can allow the throttle to move.

thanks Marti again !

I noticed that when the weather is cold (cold air outside) the car performs much better. Also last night I drive all the way home with ASC all off and drives sweet.