Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: Omega 37 on 04 August 2018, 20:43:04

Title: coolant leak
Post by: Omega 37 on 04 August 2018, 20:43:04

I have a coolant leak from a black plastic unit with 3 smallish 20MM sort of size pipes going into it. Its located next to the servo so difficult to see at the back of the engine.
Anyone know whats its called? or where to buy? cheers

Title: Re: coolant leak
Post by: Omega 37 on 04 August 2018, 21:08:33

its a coolant control valve. 22001 seems to be the part number

Title: Re: coolant leak
Post by: Carfix on 04 August 2018, 21:51:49

Probably the HBV (heater bypass valve).

Do a search on this forum and you will find plenty of information (and photos) on it.

Title: Re: coolant leak
Post by: Bigron on 04 August 2018, 21:59:34

Along with your purchase of the HBV, make sure you buy a large box of Elastoplast! :(

Ron.

Title: Re: coolant leak
Post by: Omega 37 on 05 August 2018, 10:34:16

wondering if best from underneath? have access to s lift

Title: Re: coolant leak
Post by: Doctor Gollum on 05 August 2018, 10:42:45

Read the guide ;)

From underneath you won't even see it, let alone reach it...

Title: Re: coolant leak
Post by: Omega 37 on 05 August 2018, 10:49:14

i could touch it and move it around but undoing the hoses  is another question:-\

Title: Re: coolant leak
Post by: BazaJT on 05 August 2018, 13:11:00

Never had a 2.2 so don't know the layout,but surely this has to be easier to change from above even if it can be reached from below?

Title: Re: coolant leak
Post by: Doctor Gollum on 05 August 2018, 13:26:56

Quote from: BazaJT on 05 August 2018, 13:11:00

Never had a 2.2 so don't know the layout,but surely this has to be easier to change from above even if it can be reached from below?

2.2 is indeed even easier from the top compared to the V6  :y

Title: Re: coolant leak
Post by: flyer 0712 on 06 August 2018, 16:02:45

2.2 are a bar steward because you need small steel hands to avoid getting cut to pieces...the original clips have a tongue on them and are hard to get at you can buy a special pair if clip removers that are a pair of pliers with a long cable attached which once you get them on the clip you can lock them in place and open the clip....

Title: Re: coolant leak
Post by: terry paget on 06 August 2018, 19:55:55

I changed my first HBV on a 2.0 from below. I could see it very clearly, and managed to change it at arms's length. Later I changed one on a 2.2 from above, after removing the scuttle. Still not easy. I am impressed how tough 20 year hoses are.

Title: Re: coolant leak
Post by: Doctor Gollum on 07 August 2018, 00:37:16

Have never removed a scuttle to change one. Ever.

Title: Re: coolant leak
Post by: polilara on 07 August 2018, 16:36:26

Quote from: Doctor Gollum on 07 August 2018, 00:37:16

Have never removed a scuttle to change one. Ever.

V6 or 2.2 or both? In V6 I succeeded only after having removed the scuttle, difficult for me anyway.

Title: Re: coolant leak
Post by: Doctor Gollum on 07 August 2018, 18:15:01

Quote from: polilara on 07 August 2018, 16:36:26

Quote from: Doctor Gollum on 07 August 2018, 00:37:16

Have never removed a scuttle to change one. Ever.

V6 or 2.2 or both? In V6 I succeeded only after having removed the scuttle, difficult for me anyway.

Both, but left hand drive different as HBV is tucked in the corner of the pollen filter cavity ;)

Title: Re: coolant leak
Post by: polilara on 08 August 2018, 13:23:08

OK, thanks, that can explain...