Not joined yet? Register for free and enjoy features such as alerts, private messaging and viewing latest posts and topics.

Little miss on acceleration

Discuss problems you have had or are having with your Z4
Any1else
Member
Member
Posts: 296
Joined: Wed Jan 27, 2016 5:20 pm

Little miss on acceleration

Post by Any1else » Wed Aug 23, 2017 1:16 pm

Cheers FF. Might just be the Scottish weather ! :P

Booked in at an indy this morning for week after next. Will update.
2003 Launch car : 3.0 litre E85 in Sterling grey

User avatar
Flyingfifer
Senior Member
Senior Member
Posts: 1995
Joined: Mon Mar 14, 2016 9:50 am
Location: Fife, Scotland

Little miss on acceleration

Post by Flyingfifer » Wed Aug 23, 2017 1:23 pm

Any1else wrote: Wed Aug 23, 2017 1:16 pm Cheers FF. Might just be the Scottish weather ! :P

Booked in at an indy this morning for week after next. Will update.
Probably! :rofl:
Didnt realise you were in Scotland! Where about and which indy you gona go to?
2006 3.0Si Coupé in Monaco Blau with all the optional trimmings

Any1else
Member
Member
Posts: 296
Joined: Wed Jan 27, 2016 5:20 pm

Little miss on acceleration

Post by Any1else » Wed Aug 23, 2017 11:36 pm

I'm near Glasgow mate and have used http://www.deutschtek.co.uk/ a few times.
2003 Launch car : 3.0 litre E85 in Sterling grey

User avatar
Flyingfifer
Senior Member
Senior Member
Posts: 1995
Joined: Mon Mar 14, 2016 9:50 am
Location: Fife, Scotland

Little miss on acceleration

Post by Flyingfifer » Thu Aug 31, 2017 10:44 pm

did you manage to get the car along to the Garage?
2006 3.0Si Coupé in Monaco Blau with all the optional trimmings

Any1else
Member
Member
Posts: 296
Joined: Wed Jan 27, 2016 5:20 pm

Little miss on acceleration

Post by Any1else » Fri Sep 01, 2017 1:29 pm

Not yet. Booked in next week.
2003 Launch car : 3.0 litre E85 in Sterling grey

Chris1981
Member
Member
Posts: 281
Joined: Wed Apr 05, 2017 11:39 am

Little miss on acceleration

Post by Chris1981 » Mon Sep 04, 2017 1:51 pm

Based on your signature I'm assuming your car is a 2003 3.0i? If so the engine is an M54 and therefore you can rule out Valvetronic motor as you don't have one!

Plugs and Coils as previously mentioned would be easy to check.. but expensive to change if not the issue so be sure on that one!
Vanos Solenoids or vanos unit itself, but have little experience of Vanos on the M54 engine. New solenoids solved a stutter on my 3.0si N52 engine...

A few things that are free/cheap to check...
You could try cleaning the MAF, it gets dirty over time and and would give you acceleration stutters as the car doesn't know how much air is getting in?

Look for any leaks in the air intake system, there may be a small hole that seals after it gets to temperature?

DSC may cause that issue, it will limit power when sensing slippage but doesn't always light up the dash... try switching it off when cold and see if the stutter remains?

Outside of that the DMTL code would imply a fuel delivery system issue, put some injector cleaner through it and see if you get any improvement, or even some spray through intake cleaner, there's plenty of choice in your local halfords/Auto factors.... might be worth a try before paying an Indy to diagnose it!
E86 Coupe 3.0si Sport - Montego Blue, Pearl Grey with Piano Black dash
BC BR series Coilovers, powerflex bushes, 15mm spacers, Custom SS exhaust, CDV delete

Any1else
Member
Member
Posts: 296
Joined: Wed Jan 27, 2016 5:20 pm

Little miss on acceleration

Post by Any1else » Wed Sep 06, 2017 9:56 pm

Thanks Chris - the car was booked in anyway for an MOT and an oil change so I thought I would see if they could solve it for me.

The computer didnt show a fault and they smoke tested the pipes but there were no leaks. They reset the throttle and suggested I try higher RON fuel for while to see if that cures it. Driving home tonight it certainly felt a lot smoother and perkier but I will wait til I see what its like when its cold.

Maybe it just felt happier with some new oil :P
2003 Launch car : 3.0 litre E85 in Sterling grey

Post Reply