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Omega Help Area => Omega General Help => Topic started by: idwal on 29 March 2014, 09:49:29

Title: No more misfire - now car stalling on pull away
Post by: idwal on 29 March 2014, 09:49:29

Last week car had a misfire and came up with code 19


Changed coil pac / leads / plugs and crank sensor. And this cured the misfire
I was told there was no oil in plug well

Car now seems to stall on tickover
When driving it seems ok

Car is 3.0 with LPG and auto gearbox. (125000) I think more when
warm than cold but will have too check this


Any suggestions

Ken

Title: Re: No more misfire - now car stalling on pull away
Post by: 05omegav6 on 29 March 2014, 10:45:28

Sticking idle control valve  :-\

Title: Re: No more misfire - now car stalling on pull away
Post by: idwal on 29 March 2014, 10:55:12

Can u tell me where this is
I cannot find any pics of the v6 at moment?

Thanks
Ken

Title: Re: No more misfire - now car stalling on pull away
Post by: 05omegav6 on 29 March 2014, 11:04:24

Only ever had a 3.2 which doesn't have one, but iirc, it's between the throttle body and the battery :y

The lump on the other side is the egr valve :y

Title: Re: No more misfire - now car stalling on pull away
Post by: chrisgixer on 29 March 2014, 14:43:16

Clean icv.

Loooooads of info on it in here. A well covered subject.

Title: Re: No more misfire - now car stalling on pull away
Post by: Nick W on 29 March 2014, 19:00:26

When mine did this,  it turned out to be a faulty MAF. I replaced the idle valve with a spare, fitted a new crank sensor and checked the plugs all with no improvement. It got worse the longer it ran.
Disconnecting the MAF brought the EML on, but eliminated the problem. Fitting my spare fixed it completely. A new one is seriously expensive, so you need to be sure of your diagnosis. I've never seen a faulty idle valve that wasn't obviously knackered/gummed up, so don't get your hopes up!

Title: Re: No more misfire - now car stalling on pull away
Post by: dbug on 30 March 2014, 00:32:15

As said try cleaning ICV first.

To check MAF, try running car with MAF disconnected.  If this cures problem, then you need replacement MAF ;)

Title: Re: No more misfire - now car stalling on pull away
Post by: idwal on 30 March 2014, 19:34:03

Tried with the maf unplugged but still stalled >:(

Title: Re: No more misfire - now car stalling on pull away
Post by: martin42 on 30 March 2014, 19:48:01

Is the idle valve connected and not been accidently unpluged when changing spark plugs etc.

Title: Re: No more misfire - now car stalling on pull away
Post by: idwal on 30 March 2014, 20:07:50

Will be checked tomorrow by garage :y
Will make sure I suggest this?

Thank you all for your suggestions
Ken

Title: Re: No more misfire - now car stalling on pull away
Post by: idwal on 31 March 2014, 19:50:47

Had car checked today
All pipes connected and ivc cleaned
Still stalls on idle
Only code read was 19
Any suggestions

Title: Re: No more misfire - now car stalling on pull away
Post by: dbug on 31 March 2014, 23:52:14

Quote from: idwal on 31 March 2014, 19:50:47

Had car checked today
All pipes connected and ivc cleaned
Still stalls on idle
Only code read was 19
Any suggestions

Points to dodgy crank sensor.  Was it a GM or pattern part fitted?  Also been known for a new GM crank sensor to fail vry quickly (I know - I had one fail)

Title: Re: No more misfire - now car stalling on pull away
Post by: idwal on 01 April 2014, 10:56:45

The garage wants to check the new sensor so refitting old one so I can
Use car and they will get the new one tested.

Will have to wait and see ???

Title: Re: No more misfire - now car stalling on pull away
Post by: badmuver on 12 April 2014, 19:21:45

What garage do you go to?