Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: mark.adams on 21 December 2007, 21:15:56

Title: Rev limiting at 4500
Post by: mark.adams on 21 December 2007, 21:15:56

Which sensors reporting incorrect positions/situations can cause the 'limp home mode', and to narrow it down further, are there any of them that would cause the emissions light to come on and/or the eml?
Switching off and restarting cleared the problem.

Title: Re: Rev limiting at 4500
Post by: magnul on 21 December 2007, 21:39:06

Cam and crank sensors will cause rev limiting at 4512rmp (according to TIS). I'm not familiar with the emissions lamp on 2.2, but at least at 2.0 these sensors cause EML when they're really knackered. I find it more likely that the EML lights up than the emmisions lamp if it's one of those sensors.
When my cam sensor got tired the EML disappeared when the engine was cold and occationally when restarted. After a while it died completely.
Your symptoms is probably an early warning that it will die completely quite soon.

Title: Re: Rev limiting at 4500
Post by: Auto Addict on 21 December 2007, 22:02:48

Sounds like the typical cam sensor problem on a 2.2.

Make sure it is replaced with a gen. Vx. cam sensor.

Title: Re: Rev limiting at 4500
Post by: caolan_p on 21 December 2007, 22:24:01

this is the same as mine ,its going in to get  a new cam next week  :)

Title: Re: Rev limiting at 4500
Post by: ELITE-3.0-V6 on 22 December 2007, 08:43:10

New cam, that will cost....

Title: Re: Rev limiting at 4500
Post by: TheBoy on 22 December 2007, 08:49:09

does sound like cam sensor failure, common on 2.2

If you connect a code reader, see it it has a P0340