Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: GastronomicKleptomaniac on 29 June 2022, 11:34:18

Title: Removing the auxiliary coolant pump, V6
Post by: GastronomicKleptomaniac on 29 June 2022, 11:34:18
So, as usual, two steps forward, one giant leap back.

Thought I'd disassemble the auxiliary pump under the coolant tank and clean it out, as it was clearly filled with sludge (rest of the system has been flushed as I've gone on, thank goodness).

As I did so I found that the internals were less complete than I would have liked. Like, completely broken and came out in bits...

Looking online it seems I either pay £40 for an unknown used one from Germany... or £60 for a new one.

Instead - reading up, I can live without it, I never use the car enough to need to run the heater without the engine on... so I'm thinking of bypassing it entirely. New length of hose from the bulkhead... to... where? :)
Title: Re: Removing the auxiliary coolant pump, V6
Post by: Andy H on 29 June 2022, 11:44:21
Does it leak?

Why go to the trouble of removing it if it isn't causing any harm?

I think it is a pump that is used on many vehicles that have auxiliary (diesel burning) heaters. IIRC SWMBOs diesel Galaxy had one which I replaced in a futile attempt to get cabin heat on journeys of less than 100miles. I definitely didn't pay £200 for the new pump.

Title: Re: Removing the auxiliary coolant pump, V6
Post by: GastronomicKleptomaniac on 29 June 2022, 13:48:34
Does it leak?

Why go to the trouble of removing it if it isn't causing any harm?

Because its broken!
Title: Re: Removing the auxiliary coolant pump, V6
Post by: countrywoman on 29 June 2022, 14:24:30
Still have the one that came off my downer , well thats if I can find it in my pile of crap.
Title: Re: Removing the auxiliary coolant pump, V6
Post by: GastronomicKleptomaniac on 29 June 2022, 14:32:02
I've taken a different approach... took the internals out, check it's leakproof... bolt together with no impeller and leave it in place. It'll work!

As I say I never need it. And if the car does more than 1000 miles a year it'll be a miracle :y
Title: Re: Removing the auxiliary coolant pump, V6
Post by: STEMO on 29 June 2022, 14:33:11
I've taken a different approach... took the internals out, check it's leakproof... bolt together with no impeller and leave it in place. It'll work!

As I say I never need it. And if the car does more than 1000 miles a year it'll be a miracle :y
If the car starts up it will be a miracle  ;D
Title: Re: Removing the auxiliary coolant pump, V6
Post by: GastronomicKleptomaniac on 29 June 2022, 14:34:21
I've taken a different approach... took the internals out, check it's leakproof... bolt together with no impeller and leave it in place. It'll work!

As I say I never need it. And if the car does more than 1000 miles a year it'll be a miracle :y
If the car starts up it will be a miracle  ;D

You're not wrong there...
Title: Re: Removing the auxiliary coolant pump, V6
Post by: Andy B on 30 June 2022, 10:52:18
....

I think it is a pump that is used on many vehicles that have auxiliary (diesel burning) heaters. IIRC SWMBOs diesel Galaxy had one which I replaced in a futile attempt to get cabin heat on journeys of less than 100miles. ...
That's a different thing. As GK says, the extra pump under the header tank is so you can run your heater with the engine off. My Omega never had this pump in the first place.
My R Class had the same set up & I used it about twice in 4 or 5 years so I doubt GK will miss is it if it doesn't work.
Title: Re: Removing the auxiliary coolant pump, V6
Post by: Andy H on 30 June 2022, 11:21:08
....

I think it is a pump that is used on many vehicles that have auxiliary (diesel burning) heaters. IIRC SWMBOs diesel Galaxy had one which I replaced in a futile attempt to get cabin heat on journeys of less than 100miles. ...
That's a different thing. As GK says, the extra pump under the header tank is so you can run your heater with the engine off. My Omega never had this pump in the first place.
My R Class had the same set up & I used it about twice in 4 or 5 years so I doubt GK will miss is it if it doesn't work.
My point is that it is a generic pump and easily obtainable
Title: Re: Removing the auxiliary coolant pump, V6
Post by: Andy B on 30 June 2022, 20:12:30
....

I think it is a pump that is used on many vehicles that have auxiliary (diesel burning) heaters. IIRC SWMBOs diesel Galaxy had one which I replaced in a futile attempt to get cabin heat on journeys of less than 100miles. ...
That's a different thing. As GK says, the extra pump under the header tank is so you can run your heater with the engine off. My Omega never had this pump in the first place.
My R Class had the same set up & I used it about twice in 4 or 5 years so I doubt GK will miss is it if it doesn't work.
My point is that it is a generic pump and easily obtainable
Sorry .... I mis-read what you meant.  :)