Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: blue_dream on 20 February 2009, 20:29:33

Title: omega has no power
Post by: blue_dream on 20 February 2009, 20:29:33

Good evening
                    Can some please help, replace cambelt on my omega due to possible tooth jump because she would not fire no fault codes listed, cambelt timing fine but looked bad so replace belt and tensioners and waterpump, turned over and ran after replacement, the next day the eml light on check codes by paper test codes 74 and 31, change crank sencer for code 31, unable to tell what 74 means, have replaced air flow meter about a year ago so that should be fine.
  Car will run and drive but when you floor the pedal the  car struggles, or about to stall, like weak mixture !!!
  I hope someone can help this car is becoming a pain and expensive and its needed to get to work.  :(

Title: Re: omega has no power
Post by: MutantCav on 20 February 2009, 20:32:37

Code 31 simply means no signal from crank sensor...most likely you did the test with the engine off...19 is crank sensor failure...

Sounds like possible airleak...although 74 is MAF sensor

Have you got oil in the plug wells?

Title: Re: omega has no power
Post by: dbug on 21 February 2009, 01:11:36

What model/engine/year?

Check all elec and vac connections ok.

Was new crank sensor genuine Vx?

Title: Re: omega has no power
Post by: Varche on 21 February 2009, 11:24:28

Definitely worth checking carefully all of the vacuum connections. In particular have a look underneath the rubber connectors where the black plastic tube goes in. I had one that evaded finding at the back of the engine that operates the rear multi ram. It looked fine from above!

varche

Title: Re: omega has no power
Post by: blue_dream on 21 February 2009, 19:17:54

Hi guys
             1998 2.5 v6 ,Yes checked all vac pipes that i removed and cannot see anything wrong, cranksencer was NOT vaux, but it must be ok, car starts and drives but its just when you need to floor the pedal to pull off it thinks about it, temp gauge fine, everthing else fine, once driving duel carriage car drives fine, its like the car is running lean.   :-/

Title: Re: omega has no power
Post by: RobG on 21 February 2009, 20:01:24

Check connections to MAF

Title: Re: omega has no power
Post by: iainb on 21 February 2009, 20:13:31

TBH. I would contact one of the admin's to get your on there Tech 2 diagnostic tool and go from there.
Iain

Title: Re: omega has no power
Post by: Entwood on 21 February 2009, 20:33:47

As Iain says .. you're very close to one in Northants .. a tech2 session will sort things out very fast .. and the guys that use them know what they are doing !!

Title: Re: omega has no power
Post by: blue_dream on 22 February 2009, 03:15:58

Hi
    Thanks guys, i will check this out  :y