Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: rallyraiduk on 10 February 2010, 23:08:06

Title: x25dt wont rev above 1388
Post by: rallyraiduk on 10 February 2010, 23:08:06

anyone have an idea why my x25dt engine only revs to 1388 rpm?
tried more and less fuel pressure but nothing changes  :'(

Title: Re: x25dt wont rev above 1388
Post by: rustym95 on 11 February 2010, 07:44:56

what yar is it? any mods done to engine?

Title: Re: x25dt wont rev above 1388
Post by: mathewst on 11 February 2010, 09:12:07

Do you have an EML light on?
Get the codes read.

Title: Re: x25dt wont rev above 1388
Post by: rallyraiduk on 11 February 2010, 10:16:40

no mil light on
no codes
sounds healthy when running

Title: Re: x25dt wont rev above 1388
Post by: Marks DTM Calib on 11 February 2010, 10:18:26

Check all the intake ducting and pay particular attention to where it joins onto the turbo.

Title: Re: x25dt wont rev above 1388
Post by: Welung666 on 11 February 2010, 10:55:11

Mine was like that when the MAF went. Try unplugging the MAF and see what it does then.

Title: Re: x25dt wont rev above 1388
Post by: Marks DTM Calib on 11 February 2010, 12:23:29

Quote

Mine was like that when the MAF went. Try unplugging the MAF and see what it does then.

That would have been my next step after confiming the intake is all ok.

I have seen a few where the pipe to the turbo has come off....not easy to spot with it being so low down.

Title: Re: x25dt wont rev above 1388
Post by: rallyraiduk on 11 February 2010, 12:26:00

all pipes are good !!
just a thought.....its got a range rover throttle position sensor on the accelarator pedal....the same as omega????

Title: Re: x25dt wont rev above 1388
Post by: charlie on 11 February 2010, 17:07:26

mine was the same as welungs unplugging the maf sorted it out :y :y

Title: Re: x25dt wont rev above 1388
Post by: TheBoy on 11 February 2010, 18:37:12

if x25dt and not u25dt, unplug maf as suggested!  Quick and easy test :y

If thats doesn't help, check wastegate not stuck open

Title: Re: x25dt wont rev above 1388
Post by: rallyraiduk on 14 May 2010, 20:50:05

Anyone got good eprom dumps? The ecu was reprogrammed to remove the immobiliser and maybe they corrupted one of them.

Title: Re: x25dt wont rev above 1388
Post by: TheBoy on 15 May 2010, 09:56:41

Does it rev fairly freely in Neutral?  Is EML on?