Omega Owners Forum
Omega Help Area => Omega General Help => Topic started by: MutantCav on 13 May 2008, 21:40:49
-
Went to start the estate this morning and battery was flat...swapped it over with a charged one...engine off and could hear a buzzing...checked the engine bay and there is a little pump unit to the right of the header/overflow water tank...seems to have pipes running back to the HBV area and forwards to the radiator area...uplugged it and the buzzing stopped...but what does it do? How essential is it???
-
Cant quite remember the thread Chris. But the one I am thinking of was a couple of days ago with a fire on the wiring loom.
I remember a pump being mentioned for circulating hot water if that makes any sence.
-
Re: Fire caused by alarm back up battery
Reply #3 - 10. May 2008 at 12:57 I had this problem on my 98 V6. It turned out to be the small water pump on the drivers side inner wing, you know the one that circulates hot water to the heater with the engine off, it siezed up and caught the loom alight before blowing the fuse. Too late by then!
-
Another OOF`er told me the pump circulates water through the heater matrix when the engine is off (to warm tootsies when parked-up etc.)......so, as such `doesn`t seem that vital. ;)
-
This is the whole thread.
http://www.omegaowners.com/forum/YaBB.pl?num=1210365603/0#0
-
Are these pumps kicking in due the the warmer weather?
-
Well it seems to be on all the time and draining the battery...so its now unplugged! lol :) Will replace it tomorrow and see what happens...
-
Another OOF`er told me the pump circulates water through the heater matrix when the engine is off (to warm tootsies when parked-up etc.)......so, as such `doesn`t seem that vital. ;)
Face lifts only Debs. :y
-
I wouldnt say its on the wing...its about 3-6 inches to the right of the header tank as you look at the engine bay...will try sort out a picture tomorrow...
-
I wouldnt say its on the wing...its about 3-6 inches to the right of the header tank as you look at the engine bay...will try sort out a picture tomorrow...
It's a circ pump to distribute hot water around a hot block to prevent localised over heating when you stop the engine when the engine is ??? deg hot. Mine is at the front of the car next to the radiator passenger side.
-
Went to start the estate this morning and battery was flat...swapped it over with a charged one...engine off and could hear a buzzing...checked the engine bay and there is a little pump unit to the right of the header/overflow water tank...seems to have pipes running back to the HBV area and forwards to the radiator area...uplugged it and the buzzing stopped...but what does it do? How essential is it???
As Debs said earlier this pump you are talking about allows the heaters of the car up very quickly instead of waiting for the car to warm up if that makes any sense..
Should imagine if you have now unplugged it your car heaters will take longer to warm up..
-
Another OOF`er told me the pump circulates water through the heater matrix when the engine is off (to warm tootsies when parked-up etc.)......so, as such `doesn`t seem that vital. ;)
Face lifts only Debs. :y
Eh? What have i got to keep my feet warm in my facelift? :-/
-
Another OOF`er told me the pump circulates water through the heater matrix when the engine is off (to warm tootsies when parked-up etc.)......so, as such `doesn`t seem that vital. ;)
Face lifts only Debs. :y
Eh? What have i got to keep my feet warm in my facelift? :-/
You can run your heater for a limited amount of time with the engine off. I have a pre face lift so have no idea what so ever how it works!! ;D ;D :y
Haven't you read the manual? ::) :y ;D
-
Any thoughts on why it would stay on? Also the engine was cold when it was running...and the heater off...so presumably faulty...would it be a faulty pump or faulty something else?
-
Tis an Auxillery Water Pump...I had one fail on me and the engine seemed to get too hot, rather quickly. As soon as I replaced it via fleabay, all went back to normal.
I'm no expert...BUT I would assume that if the cars fitted with one...it can only be for a purpose and purhaps not wise to unplug/disconnect it.
At the end of the day ANY "inline" water pump surely must be a good thing.
-
Some mini facelifts have both the pump next to the header tank as well as the other one at the radiator.....
-
Yep I've got one. Never worked out how it is controlled because it seems to run permenantly. Have previously unplugged it for a while and not noticed any difference either.
I can't fathom the wiring diagram in the Haynes manual but I would have guessed that when the heater is set to full cold the pump should go off - mine doesn't
-
Yep I've got one. Never worked out how it is controlled because it seems to run permenantly. Have previously unplugged it for a while and not noticed any difference either.
I can't fathom the wiring diagram in the Haynes manual but I would have guessed that when the heater is set to full cold the pump should go off - mine doesn't
May be worth checking out with tech2, Mark may well remember but my car was configured not to have it in the ecu, but it was there. Think that meant it was always on. having tech2 tell the car it was there resumed normal operation.
-
Right, time to set things straight!
This pump is an option and plays no part in the engine cooling!
What it does is circulate water through the HEATER MATRIX as part of what is called a cold weather pack to allow the cabin to heat up faster.
It plays no part in the engine cooling at all.
There is a further pump on the nearside of the radiator, this does assist circulation when the engine is off.
Within the climate panel setup there is an option to enable or disable this cold weather pack pump (it is controlled by the climate panel) and if its fitted and disabled, it runs all the time!
So be aware of this if you change the climate panel!
-
Maybe thats the problem, its a tourer and doesnt have climate control...yet the pump is there...and on all the time, so flattening the battery...without climate how would you enable it so its not always on?
-
Maybe thats the problem, its a tourer and doesnt have climate control...yet the pump is there...and on all the time, so flattening the battery...without climate how would you enable it so its not always on?
Would need to check my diagrams, but think its to do with the temp switch.....or unplug it!
-
Well its already unplugged :) But I guess as its there it would be useful to have it running properly??
-
Maybe thats the problem, its a tourer and doesnt have climate control...yet the pump is there...and on all the time, so flattening the battery...without climate how would you enable it so its not always on?
Would need to check my diagrams, but think its to do with the temp switch.....or unplug it!
I would have also thought that it was driven by the micro switches on the temp switches: the circuity that controls the HBV vac solenoid BUT that doesn't seem to be the case for me.... interested in the check of your diagrams
-
Within the climate panel setup there is an option to enable or disable this cold weather pack pump (it is controlled by the climate panel) and if its fitted and disabled, it runs all the time!
So be aware of this if you change the climate panel!
Interesting. So if I were to remove it to fit an LPG Vapouriser in its' place .. climate control could (and probably should) be reconfigured?
I've never noticed mine running, except if you turn off the engine and then switch on the climate, when it runs to heat the cabin using residual heat. Not bothered about losing that functionality as long as it's not necessary to get adequate circulation through the matrix when engine is running. Once a vapouriser is in the loop as well, I wonder if that'll be an issue? :-/
Suck it and see, I guess.
Kevin
-
Right
According to the wiring diagrams
On pre-facelift cars with or without climate, the pump is driven directly of the switched ignition feed.
On facelift cars with climate (all of them), its driven off the climate panel.
-
Right
According to the wiring diagrams
On pre-facelift cars with or without climate, the pump is driven directly of the switched ignition feed.
On facelift cars with climate (all of them), its driven off the climate panel.
that agrees with what I've observed: quite why VX thinks the pump is needed to run when the heater settings are fully cold and the HBV is closed is another matter but hey I'll put it down to a VX oddity