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16

Omega General Help / Re: Black sealant 90485251 equivalent

« on: 03 October 2022, 17:07:42 »

The Elring stuff is also listed as "Reference number OEM:90485251" on AutoDoc

https://www.autodoc.co.uk/car-parts/oem/90485251?gadw=1&gclid=Cj0KCQjwkOqZBhDNARIsAACsbfKJtLeAkWxSk4f4qcx3OA7_5ul06Zps7wv7-8_R75DLRVoDJnyF934aAnBiEALw_wcB

17

Omega General Help / Re: 2.5V6 engine take-up sluggish

« on: 12 September 2022, 17:08:00 »

Happy days!!!!

18

Omega General Help / Re: 2.5V6 engine take-up sluggish

« on: 06 September 2022, 12:06:44 »

Yep, sounds like coil 3 in the dispack is on the way out or you have a shorting plug lead to either of those 2 cylinders.

19

Omega General Help / Re: 2.5V6 engine take-up sluggish

« on: 04 September 2022, 13:55:03 »

Is it still sluggish under 3000rpm with your foot to the floor?  Wondering if it’s MAF related, pretty sure you can test that by unplugging it - will bring on EML but should still run just not at 100% efficiency. Same with O2 sensors.

20

Omega General Help / Re: 2.5V6 engine take-up sluggish

« on: 02 September 2022, 18:40:59 »

It's possibly the actuator on the rear multi-ram, you could try switching the plenum between the cars.  Just remember, everything you eliminate gets you closer to the fault

Found this thread with some relevant info on how the system works - rear valve open at idle and over 3000rpm, actuator operates to close it between those 2 points.

https://www.vauxhallownersnetwork.co.uk/threads/multi-ram-problem.86442/

21

Omega General Help / Re: 2.5V6 engine take-up sluggish

« on: 02 September 2022, 17:19:04 »

You could try switching a tank from your other car.

Presume there's no fault codes showing?

22

Omega General Help / Re: 2.5V6 engine take-up sluggish

« on: 02 September 2022, 16:44:39 »

I'm beginning to think that some re-plumbing might be in order, although both cars have been piped this way and working well for over 10 years (as acquired). I've also seen other images on this forum of cars piped this way. Even if it is incorrect, this problem only started yesterday.

So what we're saying is, this pipe should go to the fuel regulator?

Correct - the hose from the IAC pipe should go to the FPR.

The one for the rear multi-ram will be the typical thin rigid plastic hose with a 180deg rubber elbow on the end

23

Omega General Help / Re: 2.5V6 engine take-up sluggish

« on: 02 September 2022, 16:33:00 »

Also, the rear vac reservoir supplies the infamous heater bypass valve... if the diaphragm in that has ruptured then it will create an air intake leak... easy to test by removing the vac hose from the HBV and plugging the end.

24

Omega General Help / Re: 2.5V6 engine take-up sluggish

« on: 02 September 2022, 16:30:29 »

If both vac reservoirs are working then it won't really matter which one the rear multi-ram is connected to, but it sounds like the one beside the cabin filter is not holding vacuum.

Would be worth temporarily plumbing it to the front vac reservoir to see if things improve.

As mentioned in the guide... The fuel regulator has a pipe that goes to the throttle body and doesn't connect to the other vacuum pipes.

25

Omega General Help / Re: Relay K22

« on: 02 September 2022, 16:16:38 »

Looks like it...

https://workshop-manuals.com/vauxhall/omega-b/j__engine_and_engine_aggregates/cooling_system/radiator/specifications/circuit_diagram/

26

Omega General Help / Re: oil breather housing removal

« on: 28 May 2022, 10:20:22 »

Best just to clean it still on the engine as it's really awkward to get at the outboard bolts and cleaning the mating surface is a pain too with most of the old seal ending up down the holes in the block.  The majority of the crud collects at the pipe connections anyway so careful use of turning a drill bit by hand means very little falls back inside, finish off with a wee skoosh of carb cleaner as it says in the guide, or use more carb cleaner if you're changing the oil anyway.

27

Car Parts, bits For Sale & Wanted / Re: Top hat gasket/seal

« on: 28 May 2022, 09:50:25 »

pm sent

28

Car Parts, bits For Sale & Wanted / F/S - Kent Moore KM-800 V6 dealer engine timing kit and 30mm roller spanner

« on: 27 May 2022, 17:29:53 »

This is the genuine main dealer tool kit, not to be confused with the budget tool brands.

To anyone not in the know, this kit is essential when changing the timing belt on the Vauxhall and Saab V6 engines and covers the full range - Omega, Cavalier, Calibra, Vectra, Sintra, etc. and the Saab V6 models too.

All 5 components of the kit are present and correct - 2 x cam locks, crank holding/position tool, belt wedge (stops the belt slipping off the crank while you fit the rest of the belt) and the cam timing gauge.  Also included is the proper Kent Moore roller adjuster/holding tool which is basically a 30mm deep offset spanner.

Complete with original carry case.  £60 plus postage.

29

Omega General Help / Re: Part number please for a ..........

« on: 23 March 2022, 15:12:24 »

According to EPC: 90235281 superceded to 90486468 (which is a kit inc snap ring and locking plate)

30

Omega General Help / Re: Heater and blower working now on PFL MV6

« on: 13 January 2022, 15:10:39 »

I have 1 of the holders that you can replace the bulb in - yours if you pm me your address.

Used to have a big bag of various GM bulb holders but binned them in my big garage clearout at the start of LD1