Not joined yet? Register for free and enjoy features such as alerts, private messaging and viewing latest posts and topics.
UPDATED::: Z4M S54 Engine Hesitation - POLL
-
- Senior Member
- Posts: 1056
- Joined: Thu Jul 26, 2007 3:02 am
- Location: Glasgow, UK
UPDATED::: Z4M S54 Engine Hesitation - POLL
My car suffered periodically from the hesitation but it wasn't that often and I learned to drive round it. After two O2 sensors were replaced under warranty the hesitation has completely gone. Who knows if this is a cure but worth considering anyway.
06 Z4MC, Sapphire black, Aero sideskirts, BMW strutbrace, CSL's, Remus back boxes, Intravee and Alpine DAB
-
- Newbie
- Posts: 4
- Joined: Sun Sep 13, 2015 1:45 am
UPDATED::: Z4M S54 Engine Hesitation - POLL
Hi all,
I bought my Z4MC approx 12 months ago and experienced from day 1 the hesitation and idling issues described here. After spending a reasonable amount of money with an independent BMW specialist (who as it turns out is okay with standard BMWs but has no clue of how to work with S54 M cars) I was still experiencing this issue and getting quite frustrated with it.
With the fine work and how-to info of the good folk here I managed to resolve it myself by freeing up the ICV. The car now runs like an absolute dream. No hesitation. Idle sits like a rock on 900 RPM.
Thanks to those who give their time and expertise here. My car now runs like it should!
Cheers
Dan
I bought my Z4MC approx 12 months ago and experienced from day 1 the hesitation and idling issues described here. After spending a reasonable amount of money with an independent BMW specialist (who as it turns out is okay with standard BMWs but has no clue of how to work with S54 M cars) I was still experiencing this issue and getting quite frustrated with it.
With the fine work and how-to info of the good folk here I managed to resolve it myself by freeing up the ICV. The car now runs like an absolute dream. No hesitation. Idle sits like a rock on 900 RPM.
Thanks to those who give their time and expertise here. My car now runs like it should!
Cheers
Dan
-
- Member
- Posts: 648
- Joined: Tue Apr 23, 2013 10:20 am
- Location: Oxford
UPDATED::: Z4M S54 Engine Hesitation - POLL
Noticed an issue with me M, wondering if it's this.
When cold, the car is hessitant until 3k, and engine braking is very aggressive (it slows down very quickly when not on gas). I know it's thick oil, but I don't remember it doing this before the last few weeks. It's also due an I2 in 3k.
It's under warranty, and I'm tempted to throw it in for it's service earlier along with this issue.
When cold, the car is hessitant until 3k, and engine braking is very aggressive (it slows down very quickly when not on gas). I know it's thick oil, but I don't remember it doing this before the last few weeks. It's also due an I2 in 3k.
It's under warranty, and I'm tempted to throw it in for it's service earlier along with this issue.
UPDATED::: Z4M S54 Engine Hesitation - POLL
I've started to note something similar to this on mine. 59k Roadster, driven a few K per year as a weekend toy. Also runs a GruppeM filter.
It starts everytime and doesn't waiver from 900 rpm on idle (no hunting). However, I find if I take my foot off the pedal around town, it will dip below 900 revs and then return. It has never stalled on me (touch wood) but if I am in, say, second gear and go WOT from 1.5k revs I can make the car jump quite violently as it seems to "catch up with" my throttle input.
From reading the (excellent!) info in this thread, this sounds like a TPS issue, so possibly should be my first port of call?
It starts everytime and doesn't waiver from 900 rpm on idle (no hunting). However, I find if I take my foot off the pedal around town, it will dip below 900 revs and then return. It has never stalled on me (touch wood) but if I am in, say, second gear and go WOT from 1.5k revs I can make the car jump quite violently as it seems to "catch up with" my throttle input.
From reading the (excellent!) info in this thread, this sounds like a TPS issue, so possibly should be my first port of call?
-
- Lifer
- Posts: 6409
- Joined: Fri Jun 05, 2009 11:36 pm
- Location: Ayrshire,Scotland
UPDATED::: Z4M S54 Engine Hesitation - POLL
I neever had this issue with mine(posted as such on this thread,back in 2012),but it started doing it and was spoiling the otherwise excellent driving experience a wee bit...
So I took it to my BMW Indy las week,and asked him to remove and then clean the Idle control valve, which I can safely say has cured the issues I was having with hesitation/spluttering at upto about 3k rpm,as well as eractic idling.
The car is now back to driving as good as it always did,so if anyone else is having these issues,worth cleaning the icv first
So I took it to my BMW Indy las week,and asked him to remove and then clean the Idle control valve, which I can safely say has cured the issues I was having with hesitation/spluttering at upto about 3k rpm,as well as eractic idling.
The car is now back to driving as good as it always did,so if anyone else is having these issues,worth cleaning the icv first
Interlagos Blue M RDSTR,2008. Logic7 dsp Hifi;satnav,stubby,htd seats,etc,etc.
Black 2005 3.0i NOW SOLD(and missed)
UPDATED::: Z4M S54 Engine Hesitation - POLL
Thanks for the input, Craig. I've decided to spend a bit of time on preventative maintenance and love for mine, so have ordered a new MAF, TPSx2 and will clean the ICV while I have the car apart. Means it's given a nice new bill of health!craig3.2 wrote:I neever had this issue with mine(posted as such on this thread,back in 2012),but it started doing it and was spoiling the otherwise excellent driving experience a wee bit...
So I took it to my BMW Indy las week,and asked him to remove and then clean the Idle control valve, which I can safely say has cured the issues I was having with hesitation/spluttering at upto about 3k rpm,as well as eractic idling.
The car is now back to driving as good as it always did,so if anyone else is having these issues,worth cleaning the icv first
-
- Newbie
- Posts: 22
- Joined: Sun Dec 04, 2016 7:09 pm
- Location: Midlands
UPDATED::: Z4M S54 Engine Hesitation - POLL
Resurrecting an old thread has anyone got to the bottom of the revs at idle issue? My car feels like it's about to stall when I depress the clutch and then bounces back to idle
-
- Newbie
- Posts: 38
- Joined: Fri Dec 25, 2015 7:30 pm
UPDATED::: Z4M S54 Engine Hesitation - POLL
No probs with mine but saw many with the problem when looking for one to buy.
07 E86 Z4MC, 04 E46 330Ci
- Adam D
- Senior Member
- Posts: 1858
- Joined: Mon Oct 15, 2007 2:06 pm
- Location: Langdon Hills, Essex
UPDATED::: Z4M S54 Engine Hesitation - POLL
One of these will be the culprit, ordered by what I would do/check/replace first.
Idle control valve. This should open and close freely to allow enough air to bypass the closed throttle flaps to keep the engine idling correctly. They gunge up and need periodic cleaning, due to their location (under the big air plenum) this seldom happens. You could try taking the top pipe off and generously spray carb cleaner down it a few times over a week or so, or remove the air plenum to then remove it and clean it up properly or replace with a new one. Whilst off you can also clean the throttle bodies. A few guides exist on the web on how to do this with pictures.
Throttle position sensors; one of the front of the the throttle butterfly bar (next to oil canister lid) and another the throttle actuator (again under the air plenum) - they are simple potentiometers and just wear out. I changed both but thinking back I suspect cleaning the idle valve made the biggest difference.
Air Flow Meter (mine was replaced under warranty a few years ago, it did not cure the idle bounce but generally drove better after with slightly better mpg too).
Silver Grey 2007 Z4MR which needs to be driven more
-
- Newbie
- Posts: 5
- Joined: Thu Feb 22, 2018 4:21 pm
UPDATED::: Z4M S54 Engine Hesitation - POLL
Hi !
Read all over the 24 pages here.
Just bought a 2007 z4m with 11.000 Km and this thing is happening.
There´s only 5 in my country and no ones knows how to fix it. I´ll just buy everything you guys mentioned here and i´ll do it by myself. By the way, thanks for sharing all the information and all the work you did.
I didnt see any links for the parts, can any of you confirm it?
This is the TPS sensor? (I need two of these, right?)
https://parts.bmwofsouthatlanta.com/pro ... 40383.html
Idle Control Valve
https://parts.bmwofsouthatlanta.com/pro ... 33090.html
Intake Camshaft Sensor
https://parts.bmwofsouthatlanta.com/pro ... 39171.html
Throttle actuator
https://parts.bmwofsouthatlanta.com/pro ... 40537.html
Thanks again!
Read all over the 24 pages here.
Just bought a 2007 z4m with 11.000 Km and this thing is happening.
There´s only 5 in my country and no ones knows how to fix it. I´ll just buy everything you guys mentioned here and i´ll do it by myself. By the way, thanks for sharing all the information and all the work you did.
I didnt see any links for the parts, can any of you confirm it?
This is the TPS sensor? (I need two of these, right?)
https://parts.bmwofsouthatlanta.com/pro ... 40383.html
Idle Control Valve
https://parts.bmwofsouthatlanta.com/pro ... 33090.html
Intake Camshaft Sensor
https://parts.bmwofsouthatlanta.com/pro ... 39171.html
Throttle actuator
https://parts.bmwofsouthatlanta.com/pro ... 40537.html
Thanks again!
Last edited by enzotieppo on Fri Feb 23, 2018 3:13 pm, edited 1 time in total.
- Spaniarduk
- Member
- Posts: 404
- Joined: Thu Aug 11, 2016 1:36 am
UPDATED::: Z4M S54 Engine Hesitation - POLL
That link is for a throttle actuatorenzotieppo wrote: ↑Thu Feb 22, 2018 4:59 pmHi !
Idle Control Valve
https://parts.bmwofsouthatlanta.com/pro ... 40537.html
Volando voy
Volando vengo
Volando voy
Volando vengo, -engo
Y por el camino
Yo me entretengo
Volando vengo
Volando voy
Volando vengo, -engo
Y por el camino
Yo me entretengo
- BMWZ4MC
- Lifer
- Posts: 6368
- Joined: Sun Sep 13, 2009 4:24 pm
- Location: Back in the sunshine
UPDATED::: Z4M S54 Engine Hesitation - POLL
Hi enzotieppo. Well done for choosing the Z4M. Where are you based? You should introduce yourself in the newbies forum and post some pics
Z4MC - heavily fettled for track use
Lotus Exige - sensible daily driver on the mods slippery slope
Westfield SEiW - in hibernation
Modified RS4 Avant - back in Blighty
S2000 GT - gone
-
- Newbie
- Posts: 5
- Joined: Thu Feb 22, 2018 4:21 pm
UPDATED::: Z4M S54 Engine Hesitation - POLL
Sure !
I´ll do that, thanks for the tip.
I´m in Brazil, we have here 5 roadsters and another 6-7 coupes z4m.
I´ll do that, thanks for the tip.
I´m in Brazil, we have here 5 roadsters and another 6-7 coupes z4m.
-
- Newbie
- Posts: 5
- Joined: Thu Feb 22, 2018 4:21 pm
-
- Newbie
- Posts: 18
- Joined: Mon Jun 11, 2018 4:50 pm
UPDATED::: Z4M S54 Engine Hesitation - POLL
Bump. Good thread. My car is doing this badly again after being laid up for a while.
I will remove the idle control valve when I get a chance and clean it or quite possibly just replace the poxy thing.
There is something very different between the Z4M and E46 M3 S54 implementations in this respect because E46 M3 does not do this.
I know the engine management systems are different and it must be something related to the different programmes which are running between the two cars in my opinion.
I will remove the idle control valve when I get a chance and clean it or quite possibly just replace the poxy thing.
There is something very different between the Z4M and E46 M3 S54 implementations in this respect because E46 M3 does not do this.
I know the engine management systems are different and it must be something related to the different programmes which are running between the two cars in my opinion.