It's one thing after another....
It's one thing after another....
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El Diablo

Original Poster:

537 posts

210 months

Monday 8th March 2010
quotequote all
Bloody Car!!!!

Noticed while one the drive to Rye yesterday that TRAC OFF was being displayed. I tried to switch the T/C back on with no luck. So I left it until we got to Rye and when I had to start the engine again to leave.
Turned it on, while stationary I could switch between T/C on/off with no probs. So I left it on and set off home.
During the drive it appeared again 'TRAC OFF' so I left it on an just thought it would clear it's self.

We got caught up at the dartford tunnel jam and were stand-still for about 15mins. engine off.
When I turned it back on I put the T/C back on. when we pulled away to the toll booths the back end dipped slightly (for a fraction of a second) like handbrake was still on (but it wasn't), the T/C warning triangle apperared and the TRAC OFF appeared again. There was no chime when this happened.

As we went thru the tunnel the CHECK ENGINE warning appeared with the chime. This could be related but it has happened to me before when in a que of traffic. The O2 sensor gets false readings from all the other cars exhaust fumes. So it wouldn't surprise me if that's all that is.

This may also be related: When I set off in the morning the back brakes did lock for a second when I was pulling away. I left it a few secs released the handbrake and tried again. This time I pulled away with no problems.
I put that down to under use at the time.

Sorry for the long drawn out explaination. I have tried to be as detailed as I can.
Any help will be much appreciated.
Thanks.

Nic.

maxmc2

2,063 posts

216 months

Monday 8th March 2010
quotequote all
El Diablo said:
Bloody Car!!!!

Noticed while one the drive to Rye yesterday that TRAC OFF was being displayed. I tried to switch the T/C back on with no luck. So I left it until we got to Rye and when I had to start the engine again to leave.
Turned it on, while stationary I could switch between T/C on/off with no probs. So I left it on and set off home.
During the drive it appeared again 'TRAC OFF' so I left it on an just thought it would clear it's self.

We got caught up at the dartford tunnel jam and were stand-still for about 15mins. engine off.
When I turned it back on I put the T/C back on. when we pulled away to the toll booths the back end dipped slightly (for a fraction of a second) like handbrake was still on (but it wasn't), the T/C warning triangle apperared and the TRAC OFF appeared again. There was no chime when this happened.

As we went thru the tunnel the CHECK ENGINE warning appeared with the chime. This could be related but it has happened to me before when in a que of traffic. The O2 sensor gets false readings from all the other cars exhaust fumes. So it wouldn't surprise me if that's all that is.

This may also be related: When I set off in the morning the back brakes did lock for a second when I was pulling away. I left it a few secs released the handbrake and tried again. This time I pulled away with no problems.
I put that down to under use at the time.

Sorry for the long drawn out explaination. I have tried to be as detailed as I can.
Any help will be much appreciated.
Thanks.

Nic.
IVe had this on mine a couple of times.

Apperently the ABS and traction are linked so could be something to do with the brakes at the start, but was also told it could be something to do with a wet MAF sensor. Mine only seems to throw thoses errors up in the cold seems ok at the moment, im sure someone with more knowledge will be along shortley.

See my previous thread, http://www.pistonheads.co.uk/gassing/topic.asp?h=0...

ARAF

20,759 posts

254 months

Monday 8th March 2010
quotequote all
I don't know about the HSV system, but most cars use one sensor for ABS and TC. It's usually a faulty sensor that causes problems on other cars, and I've heard of a few problems due to the amout of salt that's getting thrown up under cars at the moment.

RB CV8

380 posts

232 months

Monday 8th March 2010
quotequote all
The T/C on my car occasionally switches itself off, and can only be switched on again by shutting off the engine and restarting. There is no pattern to it; months can pass without it happening, or it can happen 3 times in one day. Nor does it occur under any particular circumstances.

Mine is an early CV8 though, and Monkfish advise that a number of these have been afflicted by the problem. A new underbonnet loom is a possible, but not guaranteed fix. I don't know if the cause would be the same on later cars.,

I've lived with it for over 3 years, and don't actually find it much of an issue.

Wolfracer

2,074 posts

237 months

Monday 8th March 2010
quotequote all
El Diablo said:
The O2 sensor gets false readings from all the other cars exhaust fumes. So it wouldn't surprise me if that's all that is.

The O2 sensors are screw in sensors between the headers and cats aren't they?

monkfish1

12,504 posts

255 months

Monday 8th March 2010
quotequote all
Wolfracer said:
El Diablo said:
The O2 sensor gets false readings from all the other cars exhaust fumes. So it wouldn't surprise me if that's all that is.

The O2 sensors are screw in sensors between the headers and cats aren't they?


Correct. There is no way that they can be affected by other cars!!

El Diablo

Original Poster:

537 posts

210 months

Monday 8th March 2010
quotequote all
monkfish1 said:
Wolfracer said:
El Diablo said:
The O2 sensor gets false readings from all the other cars exhaust fumes. So it wouldn't surprise me if that's all that is.
The O2 sensors are screw in sensors between the headers and cats aren't they?
Correct. There is no way that they can be affected by other cars!!
Oh, I was always led to belive that when in stationary or slow moving traffic and I get the check engine chime it was because of a false reading due to build up of fumes.
Had the sensors cheaked at MF they were fine.

Every days' a school day!

Big Russ

53 posts

202 months

Monday 8th March 2010
quotequote all
Can't believe it but i had exactly the same 2 things happen to me yesterday.
I topped up with fuel and i had, check engine warning+chime, then, later on i had the traction off come up, i too had to restart engine to sort it.

Still puts a huge grin across my face when i'm in it though

Tattooboy

7,946 posts

209 months

Monday 8th March 2010
quotequote all
Hi Nic,

I have had both these probs with my car when I first got it.

Trac Off issue someone on here IIRC said it might be a volt drop on the crank shaft??. Ever since have kept the battery fully charged and have had no probs.

Check Engine light I've had come up once, drove to a pub to show my car to someone shortly after i got it, got there and turned the engine off. Whilst still hot, started it up again with a few revs and the light came on. Turned the engine off, let it cool down and reset the light, have not done it again since and have had no probs since either.

Maybe sitting in that traffic at the Tunnel, engine got hot and got the hump. Hopefully just a one off thumbup

S WO2TEC

2,841 posts

228 months

Monday 8th March 2010
quotequote all
never had any probs with my car IT NEVER BREAKES DOWN eek or should i say it never works it all ways brakes downhehe

sorry to hear that nick hope you fix it mate yes

El Diablo

Original Poster:

537 posts

210 months

Monday 8th March 2010
quotequote all
Cheers for all the advice. I'll drive it this week and see what happens.
If it clears its' self great if it doesen't.... Bocensoredks!!!

I have read all the entries on the link Mark posted (thanks for that mate). But as my mechanical knowledge is shocking I'm gonna need some help with the acronyms. I'm sure once I'm told it'll be obvious but i'm clueless on the MAF and OS. All that is coming to me is MAF- My Automobile is Fucensoreded.
OS- Oh Scensoredt.

Anyone care to help me out?

Is there any sort of online manual like haynes style guide to monaros'?

Wolfracer

2,074 posts

237 months

Monday 8th March 2010
quotequote all
MAF is Mass Air Flow (sensor) - look on the air intake pipe and you will see an electrical block - it measures the air flow and consequently adjust fueling.
OS is surely off side, outside, operating system, or something

Edited by Wolfracer on Monday 8th March 22:14

donk r8

2,755 posts

227 months

Monday 8th March 2010
quotequote all

My traction control (r8) quite often turnes itself off while i wait at traffic lights, but it did it twice on Sunday on the chip run..............usually resets upon start up.....something for Picadors to sort before warranty expires..

427v8

108 posts

231 months

Monday 8th March 2010
quotequote all
Nic,
traction control turning itself off will be a sensor or both eather side of your diff on the half shafts mine did this when I had the harrop diff cover put on monkfish changed one and thought the other was ok but on the journey home t/c off came on changed the other sensor been ok since might be one of them breaking down,5 min job to change. Engine warning light keep a eye on but prob just throwing it's toys out of it's pram??