Not joined yet? Register for free and enjoy features such as alerts, private messaging and viewing latest posts and topics.
Loss of power on a left turn.
-
- Newbie
- Posts: 25
- Joined: Sun Oct 01, 2023 4:28 pm
- Location: Scotland
Loss of power on a left turn.
Hi folks, my E86 3.0 Si has started misbehaving on left turns. All power just leaves the engine. No lights on the dash. Thought it may have been to with DSC but does the same when off.
Anyone experienced similar or have any ideas to pinpoint the problem?
Anyone experienced similar or have any ideas to pinpoint the problem?
- enuff_zed
- Lifer
- Posts: 15308
- Joined: Wed Oct 26, 2016 11:05 am
- Location: Attleborough, Norfolk
Loss of power on a left turn.
Have you done any work on it recently that may have disturbed something?
High speed or low speed?
Full lock or gentle turns?
Any codes stored?
High speed or low speed?
Full lock or gentle turns?
Any codes stored?
-
- Newbie
- Posts: 25
- Joined: Sun Oct 01, 2023 4:28 pm
- Location: Scotland
Loss of power on a left turn.
Only work carried out over the past 10 days was coolant change.
Only done local trips since it started so between 20 - 30 mph on 90 degree cornering.
Zero codes showing but only a cheap OBD. Hoping I can get a proper diag done over the next couple of days.
Only done local trips since it started so between 20 - 30 mph on 90 degree cornering.
Zero codes showing but only a cheap OBD. Hoping I can get a proper diag done over the next couple of days.
- enuff_zed
- Lifer
- Posts: 15308
- Joined: Wed Oct 26, 2016 11:05 am
- Location: Attleborough, Norfolk
Loss of power on a left turn.
Very odd.
Either a DSC/traction issue, or inertia making or breaking a contact as you corner.
Just to discount a mechanical issue with something being moved, have you tried putting 90 degree lock on with the car stationary?
-
- Newbie
- Posts: 25
- Joined: Sun Oct 01, 2023 4:28 pm
- Location: Scotland
Loss of power on a left turn.
Tried that and no difference in idle speed.
- enuff_zed
- Lifer
- Posts: 15308
- Joined: Wed Oct 26, 2016 11:05 am
- Location: Attleborough, Norfolk
Loss of power on a left turn.
Ok so only in motion.
I know you think otherwise but most likely thing is the DSC. Or a spurious input from the Steering Angle Sensor. If that doesnβt register a left turn then the DSC will be confused that the wheels are rotating at different speeds. A code reader that can read live data of the steering angle would help. Should be 0 degrees straight ahead and then +/- 540 degrees at full lock
-
- Newbie
- Posts: 25
- Joined: Sun Oct 01, 2023 4:28 pm
- Location: Scotland
Loss of power on a left turn.
I only discarded the DSC because it did the same with it off. I'm not up on electronics. I'm more of a spanner guy so any input from someone who is, is much appreciated.
I'll hopefully be able to get it checked out this week. Thanks for your input and time...
I'll hopefully be able to get it checked out this week. Thanks for your input and time...
- enuff_zed
- Lifer
- Posts: 15308
- Joined: Wed Oct 26, 2016 11:05 am
- Location: Attleborough, Norfolk
Loss of power on a left turn.
Iβve said many times Iβm strictly engines and airframes but you pick up a bit as you go.Marty65 wrote: βSun Dec 10, 2023 8:33 pm I only discarded the DSC because it did the same with it off. I'm not up on electronics. I'm more of a spanner guy so any input from someone who is, is much appreciated.
I'll hopefully be able to get it checked out this week. Thanks for your input and time...
Itβs an interesting issue so do let us know the outcome
-
- Newbie
- Posts: 25
- Joined: Sun Oct 01, 2023 4:28 pm
- Location: Scotland
Loss of power on a left turn.
I will do
- TOMGREEN413
- Senior Member
- Posts: 1050
- Joined: Fri Oct 14, 2022 5:41 pm
- Location: Somewhere in deep darkest Wales
Loss of power on a left turn.
Good luck, please let us know how you get on.
White e89 Red leather interior (But that's the wife's and don't I know it :/ )
Montego Blue Coupe manual si sport (Faster than the above....much faster
Montego Blue Coupe manual si sport (Faster than the above....much faster
-
- Senior Member
- Posts: 1071
- Joined: Sun Aug 14, 2016 12:30 am
Loss of power on a left turn.
Do a full scan of the car with a suitable model-specific scanner. Although the problem does not trigger an actual engine code, there may be a fault. If nothing, get a friend to read the special functions/live data on the scanner, voltage, etc, when you turn left using a phone to take pictures of the screen.
-
Online
- Lifer
- Posts: 8847
- Joined: Wed Jan 20, 2021 7:20 pm
- Location: Spaldingski
Loss of power on a left turn.
The following is not based on any technical knowledge, just trying to think logically;
From the information supplied:
Engine power is lost when turning left whilst moving, but not when steering is turned while stationary.
No obvious faults showing on scanner.
Could it be a fuel supply problem? Either a fuel pump with a dodgy connection, or even something in the tank moving around?
OR even something in the air filter housing, moving around?
Just a thought!
From the information supplied:
Engine power is lost when turning left whilst moving, but not when steering is turned while stationary.
No obvious faults showing on scanner.
Could it be a fuel supply problem? Either a fuel pump with a dodgy connection, or even something in the tank moving around?
OR even something in the air filter housing, moving around?
Just a thought!
All good things come to those who wait. I'm really impatient which explains a lot.
F31 320i. Good car.
E89 20i Now fully dried
Z3 'free litre'. Project and a half. Complicated!
Mazda3 sold
Tatty old R56 Mini Cooper. Money pit!
F31 320i. Good car.
E89 20i Now fully dried
Z3 'free litre'. Project and a half. Complicated!
Mazda3 sold
Tatty old R56 Mini Cooper. Money pit!
- enuff_zed
- Lifer
- Posts: 15308
- Joined: Wed Oct 26, 2016 11:05 am
- Location: Attleborough, Norfolk
Loss of power on a left turn.
Exactly my thinking when I was on about it being a mechanical/inertia problem, though I couldn't think what it may be.Pondrew wrote: βMon Dec 11, 2023 1:19 pm The following is not based on any technical knowledge, just trying to think logically;
From the information supplied:
Engine power is lost when turning left whilst moving, but not when steering is turned while stationary.
No obvious faults showing on scanner.
Could it be a fuel supply problem? Either a fuel pump with a dodgy connection, or even something in the tank moving around?
OR even something in the air filter housing, moving around?
Just a thought!
-
Online
- Lifer
- Posts: 8847
- Joined: Wed Jan 20, 2021 7:20 pm
- Location: Spaldingski
Loss of power on a left turn.
I feel all warm inside now! Turns out I'm not just a pretty face!
All good things come to those who wait. I'm really impatient which explains a lot.
F31 320i. Good car.
E89 20i Now fully dried
Z3 'free litre'. Project and a half. Complicated!
Mazda3 sold
Tatty old R56 Mini Cooper. Money pit!
F31 320i. Good car.
E89 20i Now fully dried
Z3 'free litre'. Project and a half. Complicated!
Mazda3 sold
Tatty old R56 Mini Cooper. Money pit!
-
- Newbie
- Posts: 25
- Joined: Sun Oct 01, 2023 4:28 pm
- Location: Scotland
Loss of power on a left turn.
Yes all possibilities. I hate cars lol