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Discussion Starter #1
Just introduced myself on the newbies section and this is now the follow up to the faults i have been having...

So bought the car about 2 weeks ago, 325ci msport 02plate 1 lady owner bought at 6 months old (ex demo) 148k covered but had an engine change end of july so 8 weeks ago. Think the head gasket went so possibly had been sat for a week or 2 before that not being driven. This engine has covered 72k.

Took a good friend with me to check the car over and he thought the car was miss firing however for a good price took the car and now in my hands to sort out. Basically it sounds like a scooby, lack of power when put my foot down but not all the time. On the motorway at higher speeds performs well but say from about 20-30mph going up a hill cant get any more power from it.

So done so far... Took it to Birmingham to the BMW garage that fitted the replacement engine had it diagnosed and they said it was the lamdor sensor, so had this changed. Engine management light went out, went to drive away and EML popped back on. Back on the diagnosis, i saw cylinder misfire come up but they just cleared the faults. Questioned it and they said well they're not coming up again. So next to come up was
(203) cb fuel trim bank 2control limit
(202) ca fuel trim bank 1control limit

So after umming and aaring apparently its common and its the fuel pump, this should be changed every 25k with a service?? So had this replaced and to be fair there was a lot of black **** that flew out of my old 1, so put it back together, EML gone, drove the car away and withing 10secs EML was back on and sounding crap again. It is running better than it was but still very flat.

On the way home down the m5 twice all the lights came on the dash :/ just like turning the ignition on. Hasn't happened since though... 2 days ago.

So today i am going to try and tackle it myself... Remove air box, clean the MAF, clean the throttle body with the cleaner and check the spark plugs along with any split hoses and will keep you all updated.

Sorry this is long and im sure there will be a mix bag of reviews, ive read a lot of posts and people say they have had the same problems but have all had different answers to fix there problem :( its never simple.

Any suggestions please help. Im going to be working on the car all day so will keep an eye out for any posts.
 

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You're headed the right way, most likely a vacuum leak. If you don't find any on the elbows, verify that the dummy plug behind the manifold was installed after the replacement motor. The DISA can leak too if the diaphragm is torn, so check for that too while you have it out.

Courtesy of another member:

<a href="http://www.flickr.com/photos/[email protected]/9952974046/" title="intakemanifoldvacuumrea by cvx5832, on Flickr"><img src="http://farm3.staticflickr.com/2847/9952974046_61aba98630_o.jpg" width="640" height="480" alt="intakemanifoldvacuumrea"></a>
 

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Discussion Starter #3
Update

Ok so had the engine apart today and 1st thing I found was a split hose, the small hose that fits straight onto the throttle body... Apparently quite common. Replaced the hose with a new 1 and Cleaned the throttle body and then took it for a drive.
Was more responsive and when putting my foot to the floor pulled a lot better :)

So on to the coil packs and spark plugs. Cylinder 4 was misfiring after disconnecting each 1 and swapping the packs over lead to a dead spark plug. all the plugs were clean so no oil leakage. so went and bought a full set of NGK plugs.
Now all fitted was excited to see the results...

EML still on :( took her for a drive to see if it needed a run in but no luck. EML Still on and still not running right :( might take it to get diagnosed again and see what fault comes up now.

Anyone had experience with their car sounding like a scooby? And I don't mean if u do actually own a scooby ;)

I didn't get chance to check the DISA either.
 

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So, 72k on the engine... read the codes and come back. I've read that failed vanos seals can exhibit this behavior. I had sluggish performance with mine at higher mileage than yours. Did the CVV, cleaned ICV, rebuilt DISA, and it was a bit better, but still lethargic. Did the vanos seals and plugs and she is good as new.

You're on the right path, keep at it.
 

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What's a scooby?
 

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So, 72k on the engine... read the codes and come back. I've read that failed vanos seals can exhibit this behavior. I had sluggish performance with mine at higher mileage than yours. Did the CVV, cleaned ICV, rebuilt DISA, and it was a bit better, but still lethargic. Did the vanos seals and plugs and she is good as new.

You're on the right path, keep at it.
Got no idea what u fellas are on about, i just know how to start and drive the thing ..respect ;)
 

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Got no idea what u fellas are on about, i just know how to start and drive the thing ..respect ;)
If you check out the e46 wiki link above, many of these things are listed there with more discussion links and procedures for fixing. There are a lot of people on here, myself included, that do most of the work to their cars themselves and save a small fortune in the process. :thumbup:
 

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If you check out the e46 wiki link above, many of these things are listed there with more discussion links and procedures for fixing. There are a lot of people on here, myself included, that do most of the work to their cars themselves and save a small fortune in the process. :thumbup:
Cheers, yea, I've been on the wiki already, most of it's over my head tho but I'll take a good look and read real slow lol.

Keep her between the hedges ;)

PS: I actually used the trick to resync the key (Remote lock/unlock on your key not working?) as the remote central locking wasn't working for quite some time, sorted it right out, was all chuffed, felt like Adrian Newey ..sad, I know.
 

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Cheers, yea, I've been on the wiki already, most of it's over my head tho but I'll take a good look and read real slow lol.

Keep her between the hedges ;)

PS: I actually used the trick to resync the key (Remote lock/unlock on your key not working?) as the remote central locking wasn't working for quite some time, sorted it right out, was all chuffed, felt like Adrian Newey ..sad, I know.
Aye!

I still don't know what a scooby is though. :( besides the dog in the popular american cartoon.
 

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Discussion Starter #11
Have since change the fuel filter and still same problem, the garage I took it to this time think its a more i depth problem. I have a list of fault codes that I will post on here ASAP but it is a list. They think its because its had an engine change it might be a problem with ecu. With an engine change do u need to re sync the ecu to the engine? Is there such a job? Is it like resetting the ecu so it recognises the engine?? Please help :(
 

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Fault codes

Ok so here is the list of fault codes that came up...

203 fuel trim bank 2 control limit mixture too rich (p0175 or p2180)

202 fuel trim bank 1 control limit mixture to lean (p0171 or p2177)

238 misfire cylinder 1 combustion miss with cylinder cutout (p1343 or p0301)

242 misfire cylinder 5 (p1351 or p0305)

241 misfire cylinder 4 (p1349 or p0304)

240 misfire cylinder 3 (p1347 or p0303)

239 misfire cylinder 2 (p1345 or p0302)

228 fuel trim bank 2, permissible range exceeded (mixture too lean (p0174)

18 signal, camshaft sensor, exhaust (no signal p0369)

119 plausibility signal 2 engine throttle to air mass flow meter sensor (p0221)

So it's throwing up a lot and the garage who tested said best to take it to a dealer, I sure u know they want £100 just to check it over :/

Any guesses or experience like this I would appreciate ur advice :)
 

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Ok so here is the list of fault codes that came up...

203 fuel trim bank 2 control limit mixture too rich (p0175 or p2180)

202 fuel trim bank 1 control limit mixture to lean (p0171 or p2177)

238 misfire cylinder 1 combustion miss with cylinder cutout (p1343 or p0301)

242 misfire cylinder 5 (p1351 or p0305)

241 misfire cylinder 4 (p1349 or p0304)

240 misfire cylinder 3 (p1347 or p0303)

239 misfire cylinder 2 (p1345 or p0302)

228 fuel trim bank 2, permissible range exceeded (mixture too lean (p0174)

18 signal, camshaft sensor, exhaust (no signal p0369)

119 plausibility signal 2 engine throttle to air mass flow meter sensor (p0221)

So it's throwing up a lot and the garage who tested said best to take it to a dealer, I sure u know they want £100 just to check it over :/

Any guesses or experience like this I would appreciate ur advice :)
The misfires are likely due to one of the other problems.

Unplug the MAF and see how it runs. If it runs better you *may* be looking at a new MAF.

The no signal on the exhaust camshaft sensor makes me wonder if it's not plugged in, or it's shot. I'd start there. Make sure the plug isn't fouled with oil and connected well. Exhaust side of engine on the front. Black connector.

Lean codes mean too much air or too little fuel. You said the fuel pump was replaced? Filter too? Could still have a vacuum leak.

Vanos seals are also a possibility, but since there's been an engine swap, I'd double check the intake boots, CCV hoses, etc. Anything that had to be reconnected on installing the engine.

Dealer as a last resort. Unless you have an extra pile of cash you're willing to part with. Aging cars are a gold mine for dealers. "Oh, you need a new this, this and this. $1,500." "What, that didn't fix it? Hmmm...... oh! You need a new this, this and this, $1200." "What, that didn't fix it? Well you still needed all of that anyway (not really) Hmmmm..... maybe one of these? $200." Fixed! Have a nice day!
 

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Ok so here is the list of fault codes that came up...

203 fuel trim bank 2 control limit mixture too rich (p0175 or p2180)

202 fuel trim bank 1 control limit mixture to lean (p0171 or p2177)

238 misfire cylinder 1 combustion miss with cylinder cutout (p1343 or p0301)

242 misfire cylinder 5 (p1351 or p0305)

241 misfire cylinder 4 (p1349 or p0304)

240 misfire cylinder 3 (p1347 or p0303)

239 misfire cylinder 2 (p1345 or p0302)

228 fuel trim bank 2, permissible range exceeded (mixture too lean (p0174)

18 signal, camshaft sensor, exhaust (no signal p0369)

119 plausibility signal 2 engine throttle to air mass flow meter sensor (p0221)

So it's throwing up a lot and the garage who tested said best to take it to a dealer, I sure u know they want £100 just to check it over :/

Any guesses or experience like this I would appreciate ur advice :)
Cylinder 6 is doing a good job though :banana:

Sorry, that's not helping. Great breakdown from Ahull, all those codes would have had me worried. But it might not be as bad as you think.

Good luck mate.
 

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Discussion Starter #16
I forgot to add that when I have this problem, well everytime im driving, if I pull over, turn my engine off and on again the problem has gone and is perfect for about 20 seconds then it all starts again? Strange and dont understand this...
 

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For the first 20 secs or so the engine runs on a basic fuel/air map from the computer and then all the sensors kick in for enhanced performance...... unless there's something wrong and then it won't run so well.
 

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eml is a throttle fault not a lean fault.If your car has a electrical throttle with a throttle cable as well around 1999-2000 they had a problem with engine wiring harness. If this is the problem your fuel trim will show rich mixtures on additive and multiplicative.
 

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Discussion Starter #20
Update...

Yes the Fuel pump was changed. I have now changed coil packs on 4-5 as they seemed the 2 not responding when I unplugged them but still no change. Next part to change was the exhaust camshaft sensor, again no luck. I'm running out of ideas! :mad:

Would getting a new DISA Valve be. Worth a look next?? I've had this part off before but struggled removing it. The top bolt was stuck so had to break the plastic so I could remove it without removing the bolt... Checked the part over all all seemed ok apart from if I open the flap and cover the small hole it flaps shut quick again where as I believe it should slowly close??? I couldn't get the bolt off so just put the valve back on with the one bolt, I'm thinking this might not be the best idea anyway?:eeps:
 
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