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[bigboyjohn]

Hi all my name is john and im new on here, hope some one can help me! Here i go,iv had a few Omegas in the past never had much trouble with them but always wanted the newer shape (mk2) today i baught one from auction stunning 2001 Y Reg automatic CD 55000 miles drives like new!!!!!!!! BUT Oh My God!!!! Heater is ice cold temp gauge does not seem to move,Expansion tank is full but seems pressured! No signs of oil contamination on filler cap or dip stick! SO Some one please tell me im not looking at what i think i may be! IE Head Gasket?? any ideas? car drives so well i just can't come to terms with it! HELP      Update Iv had the car ticking over today on my drive with headre cap off to see what happens, well temp gauge must be disconnected, as engine at top end seems to get hot but bottem remains cold you can feel burbling when you hold top hose & when it seems to reach any temp it forces water out from expansion tang not loads but like a wave movement! any more ideas?

[gstylebaby]

Frist off mate welcome to the forum the peeps on here a great and will help you out.....I have had the same problem mate does you heater get warm when your not moving an the engine idel if it does get warm'ish and then goes cold when you drive off that would be your thermostat. I don't have much of an idea with 2.2 but i don't think it will be your head gasket....I'm sure one of the other guys on here will have more of a clue and they will help more than i can.  Good luck mate.

[Bionic]

Welcome m8,
The cooling system is a pressurised one anyway, that is how it able to run without it boiling the coolant.
Is it using or leaking coolant?
When you start from cold is there any bubbles, any smell of fuel or exhaust from within the header tank? If so it may be a sign that the head gasket is on its way out.
When starting from cold put you hand on the top hose to the rad and keep it there while the engine warms up. If it stays cold and then suddenly gets hot the thermostat is working ok.
Take the vacuum pipe off the Heater Bypass Valve and see if that makes a difference because then the heater valve is permanently open.
Finally if the heaters are still cold you will have to try to back flush the heater matrix. There is a great guide of how to in the Maintenance Guide section of the forum.
If none work re-post the problem.
GudLuk

[Welung666]

Welcome aboard John, I'm the other end of the M42 to you (Dudley) and would happily take a look at it for you, soon get you sorted out

[PhilRich]

Hello John & welcome. Take Welung666 up on his kind offer, the guy knows his onions (and Omegas!) and a nicer guy you will never meet IMHO. Hope you get it sorted soon, regards Phil.

[Bixy1]

Hi, I'm new here myself but your problem sounds like no thermostat fitted or seized open, or heater warm water feed has been blanked off due to matrix leaking? Hope not! 

[bigboyjohn]

Hi guys im having more trouble finding my way round this site than i am fixing my car lol i will get the hang of it (Re my problem,today left car running from cold with header cap off for 10 mins! top hose got very hot whilst bottom hose remained cold, header leval started to raise and fall like a wave effect eventualy started to spill over a little as a time! top hose was burbling(you could hear and feel this! any ideas guys? ps thanks for your kind offer wellung666

[sparten]

could it be a blocked rad and needs flushing,just a thought and dont cost anything

[Entwood]

Without a doubt .. first thing to try is the vac pipe off the top of the HBV (don't forget to stick a bolt in the vac pipe to block it)

HBV will then "default" to full heat .. with any luck ..

Running with no cap on can eventually cause problems like you had as the boiling point is back down to "normal" .. the whole idea of the system pressurizing with the cap on is to raise the boiling point. This prevents "local boiling" at hot areas of the system causing steam/vapour which might be what you had.

HTH

[belfastmale45]

Welcome to the forum mate.
Welung has helped me here a lot. (Thanks Welung) So take him up on his very kind offer.

I've been having the same problem and today sorted it.
Bought a new thermostat and now heat at last.

Try replacing your stat first mate.

Good luck 

[bigboyjohn]

Thanks guys, I will try to find the hbv valve then if no joy change thermostat, Brrrrrrrrrrrrrr its cold!

[Welung666]

John I think I'm free Saturday morning if you want me to pop over?

[The Red Baron]

Thanks guys, I will try to find the hbv valve then if no joy change thermostat, Brrrrrrrrrrrrrr its cold!

drivers side near the bulkhead, black sputnik looking thing with vac pipe going into the top.

[bigboyjohn]

Thanks Barron, Welung666 your a star M8 only im away on a booze cruise this weekend with the ladds & wont be back till monday evening! but it would be very appreciated if you could come & have a look sometime, I would pay you whatever it costs and more M8

[Welung666]

I'm off work next week, so Monday, Tuesday or Wednesday any good? I'm off up to Lincoln Thursday for a couple of days.

Any good to you?