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1

Omega General Help / Re: 2.6 V6 Intermittent Starting and Rough Running

« on: 22 March 2023, 11:57:15 »

Well that was fun!!

Cleaned out plug wells on 246 bank (135 clean as a whistle), replaced gaskets, plugs and coil packs, cleaned out breathers as advised and behold it runs a treat!

Sorted out the windscreen plastic strip so it now attaches to the screen but the foam had rotted away. Rather than put silicon down I followed a previous post and made a deflector plate over the back right. I have read the threads about scuttle leaks and can see the issue but when it's getting late and you are working on the drive an effective engineering solution always wins!!

Only query now is EML is on with P1110-4 Intake manifold 1 open. I'm sure I plugged everything back in but are there any pictures of where this item is?

Look forward to any advice!!

Fuse.

2

Omega General Help / Re: 2.6 V6 Intermittent Starting and Rough Running

« on: 16 March 2023, 18:30:11 »

Thanks for the input. At last got a dry and warmish day to investigate (my friend has a garage but like most people it is full of other stuff and no room for the car!!).

Cylinder 6 spark plug well full of oil with a sub layer of water. Coil packs both sides showing signs of rust.

So following the superb guides in the How To section cam covers are off on the passenger side. All bolts were no more than finger tight. Replaced the cover washers with o rings (they were flat and hard!) but ran out of time to do more.

So while I'm in there it looks like new plugs and coil packs!!

3

Omega General Help / 2.6 V6 Intermittent Starting and Rough Running

« on: 02 March 2023, 00:07:14 »

2.6 V6 had been standing for a couple of months and wouldn't start. Battery charge fine, turned over fine but dead. Looking on OOF immediate answer was crank sensor - changed for Bosch unit (Lucas unit present) and lo it started.

Since then it has messed about - rough running, not starting sometimes - generally not a great confidence booster.

After the last episode following codes read

P0500-4 Vehicle speed sensor malfunction
P0500-C Vehicle speed sensor malfunction
P0300-1 Random/multiple cylinder misfire detected
P0306-1 Cylinder 6 misfire detected
P1612-0

Any wise words where to start looking next? Any connectors that may need breaking and cleaning and if so where are they? Could the ECU be faulty?

Any opinions welcome as even my Fiats didn't behave as badly as this V6!!

John.

4

Newbie Welcome Area / New to Omegas

« on: 01 March 2023, 23:51:58 »

Hi all. I'm helping out an old friend with his Omega 2.6 V6 Estate and have found the site content very useful. Personally I'm a Fiat victim (on my 6th) so have a good working knowledge of electrical problems!!

Will be asking questions as the 2.6 is messing about!

John.