Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: sujole on 07 September 2006, 20:46:42

Title: Stalling omega
Post by: sujole on 07 September 2006, 20:46:42

Hi

I have just bought a 99 'S' plate 2.5 CD. It has a large amount of history which has included rocker cover gaskets, Idle control, crank sensor, dis pack, leads and cats.

I love the car but it has a minor problem - it cuts out.

Some mornings it is hard to start and others it fires first time. Some days it will run perfectly, others it will cut out.

The cutting out gives no warning, the engine just stops. No warning lights before the event and it will start immediately after.

Any ideas gratefully received.

John

Title: Re: Stalling omega
Post by: Marks DTM Calib on 07 September 2006, 20:51:24

Does it cut out only on idle or when cruising also.

Title: Re: Stalling omega
Post by: sujole on 07 September 2006, 20:53:54

It runs perfectly until I stop and let it idle. There is no hesitation when accelerating and the car appears to have plenty of 'oomph'

Title: Re: Stalling omega
Post by: TheBoy on 07 September 2006, 22:06:58

Idle Control Valve is still favourite, but air intake leaks and EGR problem are also possibilities...

Title: Re: Stalling omega
Post by: Matchless on 08 September 2006, 11:16:11

It could be idle control valve sticking but the other possibility is the crankshaft sensor.
The sensor output voltage increases with speed, if the sensor or cable is failing then there may be sufficient signal at normal rpms but not at idle or when cranking, hence poor starting and cutting out.

Title: Re: Stalling omega
Post by: JasonH on 08 September 2006, 23:56:50

When you say hard to start, does it turn over healthily but just not fire at all ?

If so I'd suspect the cranksensor.

Title: Re: Stalling omega
Post by: sujole on 09 September 2006, 19:02:17

It turns over perfectly. It will take a couple of times before starting and other times it will start first time.

Title: Re: Stalling omega
Post by: Auto Addict on 09 September 2006, 19:06:52

I had a similar sort of problem with my 2.2 which turned out to be the cam sensor.

Title: Re: Stalling omega
Post by: Allenm on 09 September 2006, 19:45:56

Quote

It turns over perfectly. It will take a couple of times before starting and other times it will start first time.

Sounds very much like crank sensor to me

Title: Re: Stalling omega
Post by: JasonH on 10 September 2006, 15:27:23

I'd say crank sensor.

£50 for a sensor. A bit of fiddling about to fit it and the problem will disappear.