Problem with mates Omega
Discussion
Hi Guys
Posted this on the VX section but thought i would post here as i know you guys are rather clued up.
My mate has asked me if i had any ideas what was wrong with his car as i have some basic mechanical knowledge.
He owns an Omega 2.5 Auto he has made me aware of a couple of problems that he has with it.
1st one is the fact that when the car gets up to temperature the ABS and traction lights come on and then the speedo stops working this is about 15 mins after driving and the car warming up. Any thoughts, the only thing i can think of is a blocked air flow-mafsensor or something.
The 2nd thing is the car now and then will cut out. He will have to leave it off for about 5 mins before it will restart, this too i think could be to do with the air flow
Anyone point me in the right direction would be great.
Cheers
Posted this on the VX section but thought i would post here as i know you guys are rather clued up.
My mate has asked me if i had any ideas what was wrong with his car as i have some basic mechanical knowledge.
He owns an Omega 2.5 Auto he has made me aware of a couple of problems that he has with it.
1st one is the fact that when the car gets up to temperature the ABS and traction lights come on and then the speedo stops working this is about 15 mins after driving and the car warming up. Any thoughts, the only thing i can think of is a blocked air flow-mafsensor or something.
The 2nd thing is the car now and then will cut out. He will have to leave it off for about 5 mins before it will restart, this too i think could be to do with the air flow
Anyone point me in the right direction would be great.
Cheers
Hi mate
the ABS and traction control work off the same sensors and the speed is mesured on the front nearside wheel, i think you will have had an ABS sensor fail on that wheel causing all the above problems. As for the car stalling and not restarting it will more than likely be the crank sensor failing, it gets old and breaks down it starts just when the car is hot and eventually the car will not start at all.
cheers
rob
the ABS and traction control work off the same sensors and the speed is mesured on the front nearside wheel, i think you will have had an ABS sensor fail on that wheel causing all the above problems. As for the car stalling and not restarting it will more than likely be the crank sensor failing, it gets old and breaks down it starts just when the car is hot and eventually the car will not start at all.
cheers
rob
mv6 bob said:
Hi mate
the ABS and traction control work off the same sensors and the speed is mesured on the front nearside wheel, i think you will have had an ABS sensor fail on that wheel causing all the above problems. As for the car stalling and not restarting it will more than likely be the crank sensor failing, it gets old and breaks down it starts just when the car is hot and eventually the car will not start at all.
cheers
rob
Hmm strange as its not giving out codes, replacing ABS ECU, will look into the crank sensorthe ABS and traction control work off the same sensors and the speed is mesured on the front nearside wheel, i think you will have had an ABS sensor fail on that wheel causing all the above problems. As for the car stalling and not restarting it will more than likely be the crank sensor failing, it gets old and breaks down it starts just when the car is hot and eventually the car will not start at all.
cheers
rob
Cheers mate
mv6 bob said:
Hi mate
the ABS and traction control work off the same sensors and the speed is mesured on the front nearside wheel, i think you will have had an ABS sensor fail on that wheel causing all the above problems. As for the car stalling and not restarting it will more than likely be the crank sensor failing, it gets old and breaks down it starts just when the car is hot and eventually the car will not start at all.
cheers
rob
Thats interesting as my Clio sport has started to throw the ABS and traction light on occasionally. Was just going to renew all the wheel sensors but maybe just the one controls this to...? Wheres Clio net!the ABS and traction control work off the same sensors and the speed is mesured on the front nearside wheel, i think you will have had an ABS sensor fail on that wheel causing all the above problems. As for the car stalling and not restarting it will more than likely be the crank sensor failing, it gets old and breaks down it starts just when the car is hot and eventually the car will not start at all.
cheers
rob
I think the Bosch 5.3 as fitted to Omega averages all of the sensors, rather than using just one.
The only one that I know of to use a single sensor is the Conti-teves ABS ( left-hand rear )
could also try the ABS relays under the nylon covering ofthe "block"
The only one that I know of to use a single sensor is the Conti-teves ABS ( left-hand rear )
could also try the ABS relays under the nylon covering ofthe "block"
Edited by 2woody on Tuesday 15th December 14:47
maxmc2 said:
Hi Guys
Posted this on the VX section but thought i would post here as i know you guys are rather clued up.
My mate has asked me if i had any ideas what was wrong with his car as i have some basic mechanical knowledge.
He owns an Omega 2.5 Auto he has made me aware of a couple of problems that he has with it.
1st one is the fact that when the car gets up to temperature the ABS and traction lights come on and then the speedo stops working this is about 15 mins after driving and the car warming up. Any thoughts, the only thing i can think of is a blocked air flow-mafsensor or something.
The 2nd thing is the car now and then will cut out. He will have to leave it off for about 5 mins before it will restart, this too i think could be to do with the air flow
Anyone point me in the right direction would be great.
Cheers
Crank sensor is a very common fault on these engines and as the traction control also uses it to read engine speed i would suspect this is the fault (not to sure about the speedo though tbh) the sensor is on the nearside of the block at the back near where the gearbox bolts on. The sensor is very easy to find and unbolt but the wirings a bPosted this on the VX section but thought i would post here as i know you guys are rather clued up.
My mate has asked me if i had any ideas what was wrong with his car as i have some basic mechanical knowledge.
He owns an Omega 2.5 Auto he has made me aware of a couple of problems that he has with it.
1st one is the fact that when the car gets up to temperature the ABS and traction lights come on and then the speedo stops working this is about 15 mins after driving and the car warming up. Any thoughts, the only thing i can think of is a blocked air flow-mafsensor or something.
The 2nd thing is the car now and then will cut out. He will have to leave it off for about 5 mins before it will restart, this too i think could be to do with the air flow
Anyone point me in the right direction would be great.
Cheers
h though as goes over the gearbox and plugs in up by the scuttle panel, hth Neil.Yes the engine cutting out sounds like the crank sensor. I replaced loads on omega's when i worked at Vauxhall and i do remember 1 Omega cutting out about 5 mins after it was run.
ABS and TC as someone else said use the same sensors and will need checking out 1 by 1 this if i remember right can be done of you have tech2 plugged in and the might even be a abs fault code telling you which sensor its having problems with.
As for the dash well, i cant see that being liked to the other problems your friend is having.
But if the car is in the none starting state, crank over the engine and see if the rev counter moves off 0 if it doesnt move that will confirm the crankshaft sensor fault and why the car want restart.
And theres the coil pack, which will stop the spark. But thats a 1 in 10 chance its that. But i think i have a spare coil pack for a v6 somewhere if needed.
ABS and TC as someone else said use the same sensors and will need checking out 1 by 1 this if i remember right can be done of you have tech2 plugged in and the might even be a abs fault code telling you which sensor its having problems with.
As for the dash well, i cant see that being liked to the other problems your friend is having.
But if the car is in the none starting state, crank over the engine and see if the rev counter moves off 0 if it doesnt move that will confirm the crankshaft sensor fault and why the car want restart.
And theres the coil pack, which will stop the spark. But thats a 1 in 10 chance its that. But i think i have a spare coil pack for a v6 somewhere if needed.
Crank sensor is a bh of a job, nigh on engine out.
It could however be the cam sensor at the front of the engine - MUCH easier!.
Had both faults on mine years ago, luckily both occured at home so AA recovery could entertain the kids. AA man said both are common Omega V6 faults.
Other than that (and a propensity to devour front tyres), not a squeak rattle or bulb failure in 110k miles from new. Strong old buses.
h of a job, nigh on engine out.It could however be the cam sensor at the front of the engine - MUCH easier!.
Had both faults on mine years ago, luckily both occured at home so AA recovery could entertain the kids. AA man said both are common Omega V6 faults.
Other than that (and a propensity to devour front tyres), not a squeak rattle or bulb failure in 110k miles from new. Strong old buses.
ksithumper said:
Crank sensor is a bh of a job, nigh on engine out.
It could however be the cam sensor at the front of the engine - MUCH easier!.
Had both faults on mine years ago, luckily both occured at home so AA recovery could entertain the kids. AA man said both are common Omega V6 faults.
Other than that (and a propensity to devour front tyres), not a squeak rattle or bulb failure in 110k miles from new. Strong old buses.
Both commo faults on anything with a ecotec engine but the crank sensor really is not that bad i have had the displeasure of doing a few and while the wiring is a pain i never had to remove anything except the scuttle panel h of a job, nigh on engine out.It could however be the cam sensor at the front of the engine - MUCH easier!.
Had both faults on mine years ago, luckily both occured at home so AA recovery could entertain the kids. AA man said both are common Omega V6 faults.
Other than that (and a propensity to devour front tyres), not a squeak rattle or bulb failure in 110k miles from new. Strong old buses.
mv6 bob said:
Hi mate
the ABS and traction control work off the same sensors and the speed is mesured on the front nearside wheel, i think you will have had an ABS sensor fail on that wheel causing all the above problems. As for the car stalling and not restarting it will more than likely be the crank sensor failing, it gets old and breaks down it starts just when the car is hot and eventually the car will not start at all.
cheers
rob
Like the above saidthe ABS and traction control work off the same sensors and the speed is mesured on the front nearside wheel, i think you will have had an ABS sensor fail on that wheel causing all the above problems. As for the car stalling and not restarting it will more than likely be the crank sensor failing, it gets old and breaks down it starts just when the car is hot and eventually the car will not start at all.
cheers
rob
Sound to me like the abs ecu that all brake pipe go in to, as for cuting out that will be crank sensor.
I have a few good abs ecu's here, give me the part number i may have one? both easy jobs...
Edited by dreamtoy on Tuesday 15th December 19:43
sounds much more like an ABS sensor problem to me. From past experience of Omegas and other cars, it's always a sensor. I must have changed at least 50 faulty sensors in my time, yet have never seen a faulty ABS ECU (not including the relays)
Omega ABS ECU is actually attached to the ABS "block", so can be changed relatively easily.
Also, if you change the crank position sensor, make absolutely sure to route the new cable in the same place as the old one, however hard it seems. They are tucked in very close to the block, with protection from exhaust heat - a new one plumbed in shoddily will not last - I've seen one or two actually catch fire from exhaust contact.
Omega ABS ECU is actually attached to the ABS "block", so can be changed relatively easily.
Also, if you change the crank position sensor, make absolutely sure to route the new cable in the same place as the old one, however hard it seems. They are tucked in very close to the block, with protection from exhaust heat - a new one plumbed in shoddily will not last - I've seen one or two actually catch fire from exhaust contact.
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