Engine Hesitation @ 70MPH

Smoothound · 06-16-2011, 07:00 AM

I was redirected here from the main forum, so apologies for the repost.

Hi All,

I have searched and can't find the answer.

I've noticed my car has a really strange hesitancy/lurching when at 70MPH in 6th (manual box). The best way to replicate it is as follows

1) Drive at 65MPH
2) Set cruise control
3) Gradually increase cruise control in 1MPH increments
4) At 70MPH there will be a lurch

I've sent it back to the dealer and they said they couldn't replicate the problem. It's pretty annoying as when you're cruising at 70MPH you get the lurching whenever the cruise control has to compensate for a hill. The only way to live with it is to cruise at 65 or 75.

It also does it on manual throttle and in other gears, this is just the easiest way to replicate the behaviour.

Has anyone else ever experienced this?

Does anyone with a 2007 330D fancy trying the above to see if the same happens?

Thank you!

marshyrob · 06-16-2011, 11:30 AM

Ive got the same model and year so ill try it later tonight on the Motorway for you.

Will post back about 8 ish

So you want me to set CC at 65mph then increment it to 70 and see what happens? Ah just re read and mine is an auto box, ill still try it just for comparison.

MEGA · 06-16-2011, 11:58 AM

Just set it at 92 instead

jinjur · 06-16-2011, 02:11 PM

It'll be that wee annoying EGR behavior that I was getting.......

I asked BMW and they told me I was a dick (which is technically true to be fair)

Read as : Yes they noticed it but have no idea nor care of fixing it

J

Pwalo · 06-16-2011, 03:55 PM

EGR Valve - about 1800-1900 revs. Its when the exhaust flow begins getting redirected into the exhaust gas cooler and it happens on mine and others - nothing to worry about. Just drive round it. Its all part of the emissions - cooling the exhaust gas reduces the nox

marshyrob · 06-17-2011, 04:12 PM

didnt seem to happen to me when i tried it, although moving it to 71mp it had a little jolt nothing to be bothered with!!? Looks like others have answered your Q anyway.

Metalmickey · 06-19-2011, 04:28 AM

My 2008 330d auto does this too. Only does it when fully warmed up after about 10 mins of driving at 70mph.
Taking it into dealers in Monday to see what they say as it's really getting on my nerves!!
From the previous posts I've not got much faith in them doing anything about it!

Smoothound · 06-20-2011, 04:03 AM

Quote:

Originally Posted by marshyrob

didnt seem to happen to me when i tried it, although moving it to 71mp it had a little jolt nothing to be bothered with!!? Looks like others have answered your Q anyway.

Yeah, that's it. I was worried it was some fuelling/injector/pump issue. Seems to be normal behaviour then. PHEW!

Thanks EVERYONE for your responses

Smoothound · 07-02-2011, 05:23 AM

After reading through this epic thread on BMWLand

http://www.bmwland.co.uk/forums/view...?f=36&t=108190

Looks like I can't even remove the EGR. So I'll probably plug it with one of these "semi bypass" bungs

http://www.ebay.co.uk/itm/BMW-Diesel...4#ht_597wt_932

06-16-2011, 07:00 AM	#1
Smoothound Enlisted Member 7 Rep 32 Posts Drives: E92 330D SE Join Date: Oct 2010 Location: Yorkshire iTrader: (0)	Engine Hesitation @ 70MPH - 2007 E92 330D I was redirected here from the main forum, so apologies for the repost. Hi All, I have searched and can't find the answer. I've noticed my car has a really strange hesitancy/lurching when at 70MPH in 6th (manual box). The best way to replicate it is as follows 1) Drive at 65MPH 2) Set cruise control 3) Gradually increase cruise control in 1MPH increments 4) At 70MPH there will be a lurch I've sent it back to the dealer and they said they couldn't replicate the problem. It's pretty annoying as when you're cruising at 70MPH you get the lurching whenever the cruise control has to compensate for a hill. The only way to live with it is to cruise at 65 or 75. It also does it on manual throttle and in other gears, this is just the easiest way to replicate the behaviour. Has anyone else ever experienced this? Does anyone with a 2007 330D fancy trying the above to see if the same happens? Thank you!
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06-16-2011, 11:30 AM	#2
marshyrob Private First Class 15 Rep 135 Posts Drives: BMW 330d 2017 M Sport Join Date: Apr 2011 Location: SE England iTrader: (1)	Ive got the same model and year so ill try it later tonight on the Motorway for you. Will post back about 8 ish So you want me to set CC at 65mph then increment it to 70 and see what happens? Ah just re read and mine is an auto box, ill still try it just for comparison.
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06-16-2011, 11:58 AM	#3
MEGA Dieseasal 204 Rep 6,881 Posts Drives: LCI E92 335d M-Sport Join Date: Jan 2009 Location: Harrow, London iTrader: (2)	Just set it at 92 instead __________________ Previously: 2003 Peugeot 206 1.6 8v \| 2006 E90 320d M-Sport, 19" BBS CH, Full Ice-cold JL audio install, August 2010 Total BMW 6 page feature car. \| 2003 Nissan 350Z GT Coupe 286BHP Now:2010 E92 LCI 335d M-Sport
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06-16-2011, 02:11 PM	#4
jinjur yes....spelt with J's 55 Rep 963 Posts Drives: F31 325D MSport Join Date: Jan 2009 Location: NoRtH eYeLaNd iTrader: (0)	It'll be that wee annoying EGR behavior that I was getting....... I asked BMW and they told me I was a dick (which is technically true to be fair) Read as : Yes they noticed it but have no idea nor care of fixing it J
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06-16-2011, 03:55 PM	#5
Pwalo Private 10 Rep 87 Posts Drives: 118d m sport Le Mans blue 2009 Join Date: Jun 2010 Location: Guisborough iTrader: (0)	EGR Valve - about 1800-1900 revs. Its when the exhaust flow begins getting redirected into the exhaust gas cooler and it happens on mine and others - nothing to worry about. Just drive round it. Its all part of the emissions - cooling the exhaust gas reduces the nox
	Appreciate 0 Quote

06-17-2011, 04:12 PM	#6
marshyrob Private First Class 15 Rep 135 Posts Drives: BMW 330d 2017 M Sport Join Date: Apr 2011 Location: SE England iTrader: (1)	didnt seem to happen to me when i tried it, although moving it to 71mp it had a little jolt nothing to be bothered with!!? Looks like others have answered your Q anyway.
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06-19-2011, 04:28 AM	#7
Metalmickey Private First Class 1 Rep 112 Posts Drives: E90 Lci 330d M-sport Join Date: May 2011 Location: Norfolk, UK iTrader: (3)	My 2008 330d auto does this too. Only does it when fully warmed up after about 10 mins of driving at 70mph. Taking it into dealers in Monday to see what they say as it's really getting on my nerves!! From the previous posts I've not got much faith in them doing anything about it!
	Appreciate 0 Quote

07-02-2011, 05:23 AM	#9
Smoothound Enlisted Member 7 Rep 32 Posts Drives: E92 330D SE Join Date: Oct 2010 Location: Yorkshire iTrader: (0)	After reading through this epic thread on BMWLand http://www.bmwland.co.uk/forums/view...?f=36&t=108190 Looks like I can't even remove the EGR. So I'll probably plug it with one of these "semi bypass" bungs http://www.ebay.co.uk/itm/BMW-Diesel...4#ht_597wt_932
	Appreciate 0 Quote