Omega Owners Forum
Omega Help Area => Omega General Help => Topic started by: MV6Matt on 15 February 2010, 11:01:56
-
Anyone come across this at all?
The T/C has had a lot of use in the last couple of months with all the snow.
However, in the last 2 weeks when I've accelerated hard to overtake the TC light comes on and doesn't go off.
It clears after you have turneded the engine off and restarted.
Should I be worried - what can I check? :-/
Anyone seen this before - common? :(
Can anyone advise?
Matthew
-
Do a paperclip test anyway - I have a theory about 19s...
Also wonder if this could be the start of ABS ECU failure...
-
Do a paperclip test anyway - I have a theory about 19s...
>>>...oh yes?.....I have a bad feeling about this....... :(
Also wonder if this could be the start of ABS ECU failure...
>>>......uh oh, I have a really bad feling about this....................... :'(
Ok ta
Matthew
-
Before my crank sensor eventually died (outside Dijon, France), I'd had a few weeks with an orange light flickering on my dash when hoofing it. I thought it was TC one, but was so quick, never actually got to see which one it was.
Hence, if you do see a 19, that might be an easy fix. And best to get it done now, rather than at a more inconvenient time when you *REALLY* need the car.
-
All the above I agree is well valid,
Just a thought though, with all the salt on the roads recently, I wonder if the abs stator teeth on the rear of the car could be contaminated.
I've noticed recently that when I use almost full throttle in sport mode it's as though the TC is kicking in by reducing the revs and spluttering a wee bit. I've cleaned the teeth off whilst checking the car over for an MOT, it seems to have cleared the fault, coincidence! Maybe.. :-?
-
don't mention abs ecu failure to me lol. seems quite common this.
it may be worth a squirt of wd40 on the gear things at the back that do the abs etc?
-
don't mention abs ecu failure to me lol. seems quite common this.
it may be worth a squirt of wd40 on the gear things at the back that do the abs etc?
www.ecu-express.co.uk
Just in case, some friends of mine run this business in Stoke-on-Trent... :y
-
Yup, reckon its your ABS ECU. :P
-
Before my crank sensor eventually died (outside Dijon, France), I'd had a few weeks with an orange light flickering on my dash when hoofing it. I thought it was TC one, but was so quick, never actually got to see which one it was.
Hence, if you do see a 19, that might be an easy fix. And best to get it done now, rather than at a more inconvenient time when you *REALLY* need the car.
My 1994 V6 used to tie itself in knots once T/C cut in. I had to lift off to before it would stop kangarooing, don't know if it was related to soft diff mount bushes?
I wonder if a misfire caused by crank sensor problem could trigger the T/C on a pre facelift car? :-/
-
I woul have expected to see both TC and ABS lights on if the ecu was going
-
I woul have expected to see both TC and ABS lights on if the ecu was going
No - just the TC light - will try and get out and do the P/c test......................
-
Just done the p/c test and am getting a 21 code - (TPS) Voltage high.
I don't know how Throttle position sensors work but if I'm booting the car to over take (already at speed) is something staying in place rather than returning to a 'neutral' or default position once the input is over/finished?
Well, that's me mystified :-?
So folks - what say you peeps?
What needs fixing and how?
Matthew
-
TB - could this be something to do with your theory on 19's? :-?
Matthew
-
Any ideas folks?
:)
-
TB - could this be something to do with your theory on 19's? :-?
Matthew
No. But worth paperclipping once a week or so, just to keep an eye on if that pesky 19 appears.
Worth looking into the TPS - the engine and ABS ECUs talk a lot, and I reckon a flickering TC light was the warning sign of my crank sensor. So its possible the engine ecu is upsetting/confusing the ABS ecu when running in an 'error/recovery' program.
-
No. But worth paperclipping once a week or so, just to keep an eye on if that pesky 19 appears.
>>TB - bit confused :-?- I'm on 19" rubber - the code is 21 not 19
Worth looking into the TPS - the engine and ABS ECUs talk a lot, and I reckon a flickering TC light was the warning sign of my crank sensor. So its possible the engine ecu is upsetting/confusing the ABS ecu when running in an 'error/recovery' program
>> Ok my TC light doesn't flicker but stays on when booted. Clears after restarting. Will keep an eye on TPS
Ta Matthew
-
Just a thought .. if you are on 19" wheels .. and the standard wheels are either 15", 16" or 17", unless you have REALLY skinny tyres your overall wheel/tyre circumference will be somewhat larger than standard.
Now under hard acceleration the engine will attempt to speed up at a certain rate, controlled by the ECU, but the wheels on your car being larger, will not achieve that ... Could it be that the ecu is "expecting" the wheels to rotate at a certain rate, and the ABS sensors detect the wheel rotation being slower and so flag up a fault ???
:-/ :-/ :-/ :-/
-
No. But worth paperclipping once a week or so, just to keep an eye on if that pesky 19 appears.
>>TB - bit confused :-?- I'm on 19" rubber - the code is 21 not 19
Worth looking into the TPS - the engine and ABS ECUs talk a lot, and I reckon a flickering TC light was the warning sign of my crank sensor. So its possible the engine ecu is upsetting/confusing the ABS ecu when running in an 'error/recovery' program
>> Ok my TC light doesn't flicker but stays on when booted. Clears after restarting. Will keep an eye on TPS
Ta Matthew
Ah, right :y
I think you probably need to get the ABS ECU codes read. Not sure where in London you are, but I'm near Northampton, Kevin Wood is near Alton/Hampshire.
-
Just a thought .. if you are on 19" wheels .. and the standard wheels are either 15", 16" or 17", unless you have REALLY skinny tyres your overall wheel/tyre circumference will be somewhat larger than standard.
Now under hard acceleration the engine will attempt to speed up at a certain rate, controlled by the ECU, but the wheels on your car being larger, will not achieve that ... Could it be that the ecu is "expecting" the wheels to rotate at a certain rate, and the ABS sensors detect the wheel rotation being slower and so flag up a fault ???
:-/ :-/ :-/ :-/
I think MotoGP bikes monitor how quickly the rotation of the rear wheel is increasing to control wheelspin because they havn't got anything else to monitor (they can't rely on the front wheel it is off the ground half the time)
I think the Omega just compares instantaneous rotation of one back wheel to the other (and perhaps to the front as well). If it was looking at rotation increasing too quickly then a larger rolling radius would reduce the effect (not make it more sensitive).
I don't see why increasing too slowly would imply wheelspin. :-/
-
Just a thought .. if you are on 19" wheels .. and the standard wheels are either 15", 16" or 17", unless you have REALLY skinny tyres your overall wheel/tyre circumference will be somewhat larger than standard.
Now under hard acceleration the engine will attempt to speed up at a certain rate, controlled by the ECU, but the wheels on your car being larger, will not achieve that ... Could it be that the ecu is "expecting" the wheels to rotate at a certain rate, and the ABS sensors detect the wheel rotation being slower and so flag up a fault ???
:-/ :-/ :-/ :-/
I think MotoGP bikes monitor how quickly the rotation of the rear wheel is increasing to control wheelspin because they havn't got anything else to monitor (they can't rely on the front wheel it is off the ground half the time)
I think the Omega just compares instantaneous rotation of one back wheel to the other (and perhaps to the front as well). If it was looking at rotation increasing too quickly then a larger rolling radius would reduce the effect (not make it more sensitive).
I don't see why increasing too slowly would imply wheelspin. :-/
Omega learns its wheel sizes over the first couple of miles, so thats never an issue.
-
try to acclerate a bit slower. its not a jelly mould corsa. would check the tps sensor as thats the code your getting.
-
OK thanks for all the advice - as it's Cambelt time next month I will get the TPS checked out as well as ABS ECU at same time.
I will see who's available on here and get it all done at same time I guess. ;)
Thanks again :y
Matthew