Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: david274 on 07 May 2010, 18:12:12

Title: Omega Cold Start Fault
Post by: david274 on 07 May 2010, 18:12:12

I NEED SOME HELP ON A 2L 16V NREG OMEGA ECOTEC.
CAR STARTS FINE IN WARM WEATHER. FROM COLD VERY DIFFICULT - IT FIRES BUT THEN CUTS...AS IF NO FUEL.
IS THIS THROTTLE SENSOR OR ACTUATOR,OR SOMETHING ELSE...APPEARS TO BE A VERY QUIET HUM FROM ENGINE AND
OCCASIONALLY AFTER IT STARTS THE ECU LIGHT IS ON( IT DISAPPEARS AFTER A SUBSEQUENT WARM START)

THANKS DAVID 274

Title: Re: Omega Cold Start Fault
Post by: Abiton on 07 May 2010, 19:04:16

Welcome to the forum David.

Please try to avoid writing everything in capitals, it looks like you're shouting.  :)

You need to find a paperclip, and then follow the instructions in this link:

http://www.omegaowners.com/forum/YaBB.pl?num=1189022687

When you've got some error codes from the above (if there are any), post them here and people will advise on interpreting them.
 :y

Title: Re: Omega Cold Start Fault
Post by: david274 on 07 May 2010, 20:15:58

Wow!

Thanks Abiton for both pieces of advice.....shhhh...speaking
softly..

David 274

Title: Re: Omega Cold Start Fault
Post by: david274 on 09 May 2010, 15:24:27

Ref Cold Start fault on 2l 16v Ecotec Omega

EML fault lights show;

19 ....due probably to engine not running
73 -  is this mass air flow temperature?
92 -is this camshaft position sensor -incorrect signal?

Could anyone tell me where these are located and is the CPS incorrect likely to be due to oil on the sensor

Thanks

David274

Title: Re: Omega Cold Start Fault
Post by: Welung666 on 09 May 2010, 18:18:11

Where are you David?

Title: Re: Omega Cold Start Fault
Post by: Abiton on 09 May 2010, 20:01:53

Code 19 will be a stored code, not just caused by the paperclipping being done with engine not running, I'm pretty sure.

General feeling on here seems to be that if your car has a code 19, and you don't replace the crank sensor with a genuine Vx part, you're asking for trouble soon in the shape of a breakdown.

In your case, I'm not too sure whether this is the only issue, because typical crank sensor symptoms are cutting out while on the move, and refusal to restart until the engine has cooled for a while.  :-/

Others will probably be able to advise better, never had a 19 myself.

Oh, and the crank sensor is down by the base of the dipstick tube, just in front by an inch or so.

Title: Re: Omega Cold Start Fault
Post by: Welung666 on 09 May 2010, 20:04:33

As it's a 4 pot I'd go for the cam sensor first. Replace with genuine Vx, get it on a code reader to clear and re-read the codes again :y

Title: Re: Omega Cold Start Fault
Post by: david274 on 12 May 2010, 20:25:32

Thanks for the advice from all.

Wellunga 666 ...I'm in Oxford

Regards

David274