hi guys, yesterday had coolant level warning come on. so topped it right up. then this morning had same warning. checked coolant and it has gone right down.

can someone please help with what the problem is? could do without it being major job re finances  :'(

cheers as usual for your anticipated replies  :)

Check the HBV first

RobG wrote on 31. Aug 2011 at 12:27:

Check the HBV first

sorry m8 i aint technical or mechanical. whats hbv and how do i check this?  :)

Lives at rear of engine. 2nd & 3rd pic down
http://www.omegaowners.com/forum/YaBB.pl?num=1181719948
Engine running, heater on and look under car see if it`s leaking

ok mate just done that. im on lunch and its on drive and its obviously been leaking since i got home (about 15 mins) cos when i look under the car from drivers side there's a bit of flui on the floor what looks to be just behind the engine :-?

Make sure it`s not A/C condensate. If it`s HBV, coolant should be dripping off bottom of gearbox where it mates to engine block

well i did look for 5 mins and didnt see anything dripping. if it was the hbv would it be flooding out?

Webby the Bear wrote on 31. Aug 2011 at 12:57:

.... if it was the hbv would it be flooding out?

Depends. Mine last leaked with the a/c on, but was OK-ish with the a/C off, all depends where the diaphragm is split & what heat settings are set.  :y

Andy B wrote on 31. Aug 2011 at 13:06:

Webby the Bear wrote on 31. Aug 2011 at 12:57: .... if it was the hbv would it be flooding out? Depends. Mine last leaked with the a/c on, but was OK-ish with the a/C off, all depends where the diaphragm is split & what heat settings are set.  :y

thanks for all your help chaps. ill be honest i have no idea if its aircon water or this hbv fluid.

ive properly brimmed it and the dash warning has gone; im going to keep my eye on it but if it comes back suddenly is there a mechanic on OOF that could take a look (near northampton)?????? (obviously ill pay  :y :y :y :y

How can you have posted on here over 1500 times and not know what a HBV is ?  ::) it must be one of THE most discussed components on here :o author=714344445F79524E437964434754260 link=1314790043/2#2 date=1314790172]
RobG wrote on 31. Aug 2011 at 12:27:

Check the HBV first

sorry m8 i aint technical or mechanical. whats hbv and how do i check this?  :)[/quote]

Webby the Bear wrote on 31. Aug 2011 at 17:54:

Andy B wrote on 31. Aug 2011 at 13:06: Webby the Bear wrote on 31. Aug 2011 at 12:57: .... if it was the hbv would it be flooding out? Depends. Mine last leaked with the a/c on, but was OK-ish with the a/C off, all depends where the diaphragm is split & what heat settings are set.  :y thanks for all your help chaps. ill be honest i have no idea if its aircon water or this hbv fluid. ive properly brimmed it and the dash warning has gone; im going to keep my eye on it but if it comes back suddenly is there a mechanic on OOF that could take a look (near northampton)?????? (obviously ill pay  :y :y :y :y

Air con does have a condensate drain to the floor but this isn't anything to do with this water loss.
There's a diaphragm inside the HBV which operates a valve inside which diverts coolant around your heater matrix or not. Depending where the split is in the diaphragm, and the requirements of the car for heat inside the car depends whether the HBV leaks or not.  :y :y

Bent valve wrote on 31. Aug 2011 at 18:32:

How can you have posted on here over 1500 times and not know what a HBV is ?  ::) it must be one of THE most discussed components on here :o author=714344445F79524E437964434754260 link=1314790043/2#2 date=1314790172] RobG wrote on 31. Aug 2011 at 12:27: Check the HBV first sorry m8 i aint technical or mechanical. whats hbv and how do i check this?  :)

[/quote]


probably cos i spend most of my time in the gen. discussion area  ;D ;D ;D

thanks andy b.  :y :y

Does the "leaked water" taste of water or antifreeze?  ;) ;D ;D