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Omega General Help / Re: Diff noise on 2.5
« on: 24 April 2010, 19:11:07 »
I expect so however increased speed + road noise makes it difficult to be sure. It's most pronounced at about 30mph and on the over-run.
phil b
phil b
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Omega General Help / Diff noise on 2.5
« on: 24 April 2010, 13:04:37 »
Hi everybody especially you omega experts.
Iam still trying to find the source of the noise of what I thought was a cv joint, then thought it might be the prop centre bearing. Having split various joints in the transmission it looks like it's the Diff! got that whine! and there is more backlash on the pinion input shaft than I would expect. It's an x reg 2.5 petrol facelift with 90k on the clock. Vauxhall dealer also confident it's the diff. Now, at 55k soon after i got thre car a Vauxhall main dealer renewed the diff pinion oil seal. Im I right in thinking this would involve resetting the pinoin pre-load which if was not correct would lead to premature failure, because 90k is no mileage for a diff to go, and would resetting the pr-load help.
phil b
Iam still trying to find the source of the noise of what I thought was a cv joint, then thought it might be the prop centre bearing. Having split various joints in the transmission it looks like it's the Diff! got that whine! and there is more backlash on the pinion input shaft than I would expect. It's an x reg 2.5 petrol facelift with 90k on the clock. Vauxhall dealer also confident it's the diff. Now, at 55k soon after i got thre car a Vauxhall main dealer renewed the diff pinion oil seal. Im I right in thinking this would involve resetting the pinoin pre-load which if was not correct would lead to premature failure, because 90k is no mileage for a diff to go, and would resetting the pr-load help.
phil b
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Omega General Help / Re: Drive Shaft parts
« on: 19 April 2010, 16:09:23 »
Hi again
Already had a look at the web site mentioned by dad1uk + a few others but they don't list any bits for year 2000 on. The shaft / cv joints must be different from earlier models? Does anybody know it thats the case? The one on e-bay mentioned by dad1 uk is a 99 model. I have sourced one or two from scap yards at £40 which doesn't seem bad.
Already had a look at the web site mentioned by dad1uk + a few others but they don't list any bits for year 2000 on. The shaft / cv joints must be different from earlier models? Does anybody know it thats the case? The one on e-bay mentioned by dad1 uk is a 99 model. I have sourced one or two from scap yards at £40 which doesn't seem bad.
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Omega General Help / Drive Shaft parts
« on: 17 April 2010, 09:19:56 »
Hi Everbody. I think I need a n/s drive shaft or joints to diy the repair on my x reg faxelift 2.5 petrol. CV joints or shaft not available from VX or after market. only a rebuild by specialists. Any ideas from you VX experts on a supplier.
Cheers
Phil b
Cheers
Phil b
5
Omega General Help / Re: High Hydrocarbons
« on: 20 March 2010, 10:11:03 »
Hi again guys. Regarding the high hc I have just remembered something. I filled up with petrol at Tesco and added some Redex not long before it went for test. I guess this could account for the high reading when nothing everthing else seem to be wrong. Senior moment I hope!
Cheeers
Phil-b
Cheeers
Phil-b
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Omega General Help / Re: High Hydrocarbons
« on: 18 March 2010, 07:30:38 »
Hi Guys
Reply for welung666 No i dont have a K&N just standard air filter which is new.
Phil-b
Reply for welung666 No i dont have a K&N just standard air filter which is new.
Phil-b
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Omega General Help / Re: High Hydrocarbons
« on: 17 March 2010, 16:25:02 »
Thanks for your responsees. No it isn't using any oil and there are no misfires. The other readings look ok, not sure what readings are relevent but lambda is 1.012 @ fast idle co is 0.083. @ natural idle co is 0.083 As for the breathers they have never been cleaned, and reading about this and the problems it causes it may be the problem. I get about 34mpg on a decent run if I dont flog it and it runs well enough.
Cheers
Phil-b
Cheers
Phil-b
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Omega General Help / High Hydrocarbons
« on: 17 March 2010, 14:25:54 »
Hi everybody I have year 2000 x reg facelift 2.5 with 98k miles. it gets regular oil & filter changes (every 4k) It has just passed it's MOT but I notice the HC reading has jumped from arround the 30 ppm mark of the last few fears to 188! so something is obviously wrong. I suspect the EGR valve may be restricted with mayo, is this likley or does any body have any other ideas. it does't burn/use any oil and seems to run well enough.
Cheers
Phil @ Scarborough
Cheers
Phil @ Scarborough
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