330D Lumpy Idle

stugolf · 06-19-2014, 09:54 AM

Hi guys

Recently purchased a e90 (Pre-LCI) 330D, I love the car and its everything I'd hope it would be (pics coming soon) but I noticed this morning that I started the car from stone cold and after 10 seconds it went very lumpy for around 20 seconds and was fine again?

I didn't notice any smoke the car would rev but was slightly laboured.

I have no errors on the dash but I do need to get the car read to find the exact problem but am I looking at injectors/glow plugs or MAF maybe?

It did seem strange that it started fine and then when lumpy?

Thanks for any advice

e91boi · 06-19-2014, 11:24 AM

I changed the glow plugs on mine aswell as the controller which goes with them, mine wasn't showing any faults however when I read the codes it indicated that I had all 6 plugs off (normally indicating that the controller is broken) I replaced all six plugs and controller and much better. Whilst I was there I also resealed the swirl flaps and gave the manifold and EGR a clean. Long job but well worth the effort

stugolf · 06-19-2014, 05:23 PM

Cheers E91boi

Did yours have the same symptoms?

AzRiz · 06-20-2014, 04:40 AM

My LCI does this on about 50% of cold starts. Haven't checked for errors but I do think it's the glow plug controller. It's about £120 IIRC and is reasonably easy to access on the N57, not sure about the M57 though. Apart from the rough feeling for about 20 seconds as you say, I get no other symptoms (except a total cut-out once but that was a one-off) so I'm not in a rush to get it sorted.

06-19-2014, 09:54 AM	#1
stugolf Private 7 Rep 63 Posts Drives: E90 330D Join Date: Jan 2014 Location: North West UK iTrader: (0)	330D Lumpy Idle Hi guys Recently purchased a e90 (Pre-LCI) 330D, I love the car and its everything I'd hope it would be (pics coming soon) but I noticed this morning that I started the car from stone cold and after 10 seconds it went very lumpy for around 20 seconds and was fine again? I didn't notice any smoke the car would rev but was slightly laboured. I have no errors on the dash but I do need to get the car read to find the exact problem but am I looking at injectors/glow plugs or MAF maybe? It did seem strange that it started fine and then when lumpy? Thanks for any advice
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06-19-2014, 11:24 AM	#2
e91boi Private 2 Rep 60 Posts Drives: E91 330d M-Sport Join Date: Dec 2013 Location: North East iTrader: (1)	I changed the glow plugs on mine aswell as the controller which goes with them, mine wasn't showing any faults however when I read the codes it indicated that I had all 6 plugs off (normally indicating that the controller is broken) I replaced all six plugs and controller and much better. Whilst I was there I also resealed the swirl flaps and gave the manifold and EGR a clean. Long job but well worth the effort
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06-19-2014, 05:23 PM	#3
stugolf Private 7 Rep 63 Posts Drives: E90 330D Join Date: Jan 2014 Location: North West UK iTrader: (0)	Cheers E91boi Did yours have the same symptoms?
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06-20-2014, 04:40 AM	#4
AzRiz Captain 142 Rep 940 Posts Drives: E92 M3 LE500 Join Date: Nov 2013 Location: London iTrader: (1)	My LCI does this on about 50% of cold starts. Haven't checked for errors but I do think it's the glow plug controller. It's about £120 IIRC and is reasonably easy to access on the N57, not sure about the M57 though. Apart from the rough feeling for about 20 seconds as you say, I get no other symptoms (except a total cut-out once but that was a one-off) so I'm not in a rush to get it sorted. __________________ Progress Thread \| Instagram: @azriz
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