Molbyj

Forgot to mention its a 2ltr diesel, 55reg with 75000miles on. Thanks.

Hello peeps, Haven't been for a while, I've had a daughter since ( our 1st) since I was last on here. Before, I was having a problem with limiting revs/top speed. Turned out it was a blocked cat, the garaged jet washed loads of black crud out (as recommended by bmw). Now recently the car has been juddering when driving at a constant speed ( air maff and smooth running controller fault codes found). Garage and others recommended replacing 4x injectors (old ones were tested, all show a similar low pressure). Injectors were replaced and found out today it hasn't worked, with the work that has already been carried out (clean egr) including parts it's cost me just over £1000! ( intectors £170 each + vat x4). They are still getting 4B10 fault code (smooth running controller). I'm stuck offshore for the next 2 weeks but my mrs is stuck without a car so any help or guidance would be gratefully received. Thanks for reading Ross.

Quick update: finally changed the maf today but still the problem persists. It's still driving like my maf is faulty even with the faults cleared. Particulate filter code came up after we had cleared them? Went for a drive and EML came back on, will get the fault codes read again tomorrow and go from there. Give my mk1 golf cabby any day.

I know, school boy error. Its just after the probs I've had recently I thought the worst. Thanks any way

Haha, not so bad after all. I might have been a little hasty, Turns out I needed a new battery!

Another chuffing problem!!! My wife has just gone to go to work this morn, tried to start it but its just clicking with DDE is flashing up! Could it be anything to do with low temperatures we're experiencing? Loosing faith in BMW fast. Ross

I've noticed the noise a couple of times when slowing down and feet not touch either peddles.

Hi, the way this maf is designed, you can't actually see any element. The front of the maf (opposite end in picture) has a cross hatch pattern on it, angled at 45degrees so you can't see anything through it. Even holding it up the the light. The rumble just sounds worse when you hold it at the 'bite point'. Noticed it initially reversing slowly out of my drive way as well as driving slowly in. Thanks, Ross.

Cleaning maf didn't work, so will have to buy one. At £163 delivered for a Bosch one they don't come cheap. Unless anyone knows of cheaper (must be genuine/Bosch) Had someone listen to the noise (although very briefly) he's guessing thrust bearing? Or misaligned prongs that come out of the clutch plate? Either way its a gear box out job:( Expecting our first in feb so this isn't going to happen for a while. Ill just get the maf sorted and running properly first. Do I need to clean anything else as the maf has been running rough (assuming it is the problem)? Thanks again Ross.

Hi Daz, maf hasn't got any screws etc holding it together just looks like its been pushed together but doesn't want to come apart, it's stuck solid, managed to spray cleaner through it but unsure how well it's done. Will get the faults cleared and see if it works. I'm not getting any vibration through the gears under load. I'll probably get someone look at this soon but I'm going away for a few days so will have to update you guys when I get back. Thanks again for the reply Ross

Sitting in the car tonight with engine running, pressing and realeasing the clutchi im getting what I think is my rumble noise, been reading into this and sounds like it could be dual mass flywheel problem?! Not sure if im liking this internet malarky as I keep finfing expensive problems. Ross

Here's the maf I can't clean properly

Tracking has already been done unfortunately and was out, tyres changes but the mechanical rumble is still there. Finally able to get the maf off but unable to clean or even see the elements to clean, just ended up spraying some cleaner through it. Looks like ill have to buy one. Will check the fault codes tomorrow to see if I've cleaned it? Back to the drawing board. Ta Ross.

Thanks for the welcoming and replies guys. With regards to the mechanical 'rumble', I'm currently having 2 new front tyres as well as front and rear tracking adjusted. The rumble only happens at low revs, I drove it around last night but it seems to do it randomly? Lets hope the tyres/tracking has something to do with it as I've heard these can cause transfer box issues? As for the maf I was under the impression you shouldn't clean them? I'm more than happy to just thought it shouldn't be done. Could the maf be the cause of the other faults coming up? Will try and have a look for and clean the naff today. Thanks again for the replies, will let you know the tyre and tracking outcome. Ross

I've just posted this in the wrong section, so here we go again. Hi, I'm Ross and new to the bmw world. I have recently purchased a x3 2.0d sport and have since found a couple of issues. -I'm getting a rumbling at low revs eg when I'm pulling away. I've read that it could be a tyre issue and have noticed my front near side tyre is a lot lower that the offside and so thinking of buying a new front pair ( dunlop 235/50/18 sport 01s I think). -I've also had a couple of codes come up(engine management light) theses were air mass, exhaust back pressure and partulate filter. I've been advised to change the air flow meter 1st. Is this good advise and where is the best place to find a Bosch one? Many thanks P.s enjoying the drive even with the faults.