Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: tunnie on 21 January 2016, 18:59:54

Title: 2.2 Petrol Stat Change
Post by: tunnie on 21 January 2016, 18:59:54
Picked up new stat, the rubber gasket is already on the stat housing.

Is it worth taking this off, then putting a tiny bit of grease around the rubber gasket, then re-seating?

Or just apply to the surface/stat housing on the engine block where it's mounting to?
Title: Re: 2.2 Petrol Stat Change
Post by: 05omegav6 on 21 January 2016, 19:03:57
If the seal is happily in place, simply fit it ;)
Title: Re: 2.2 Petrol Stat Change
Post by: tunnie on 21 January 2016, 19:04:55
Ta  :y

A little job for the weekend  :)
Title: Re: 2.2 Petrol Stat Change
Post by: T.m.f on 21 January 2016, 19:38:38
10 mins max to change ,any longer than that then you shouldnt be working on an engine lol  :y
Title: Re: 2.2 Petrol Stat Change
Post by: flyer 0712 on 21 January 2016, 20:13:34
You still got time to do it tonight..its dark and cold....ideal job.. ;D ;D
Title: Re: 2.2 Petrol Stat Change
Post by: tunnie on 21 January 2016, 20:28:58
Done it before  :y

Was one of my very first jobs that I did  :)
Title: Re: 2.2 Petrol Stat Change
Post by: TheBoy on 21 January 2016, 20:46:14
Done it before  :y

Was one of my very first jobs that I did  :)
I remember :y.  Probably a good excuse to flush the coolant through as you have to partially drain anyway :)
Title: Re: 2.2 Petrol Stat Change
Post by: tunnie on 21 January 2016, 21:02:00
Done it before  :y

Was one of my very first jobs that I did  :)
I remember :y.  Probably a good excuse to flush the coolant through as you have to partially drain anyway :)

That's why I bought a bottle of coolant too  :y although it's not long since it has a good change. Belt and water pump was changed last year.
Title: Re: 2.2 Petrol Stat Change
Post by: tunnie on 25 January 2016, 09:35:00
Hummm something is still not right, only warmed up to ~80c on the gauge today really. Huge chunk of the first part of my commute is stop/start 50mph average down the M3. Bit more speed on M25, saw it rose very slightly.

Oddly, when I came off motorway for Heathrow (and came to a stop) it went to 85 quite quickly. But going around the Heathrow perimeter road, it would range from 80/85, tending to go to 85 when stopped.

Stop/start driving saw it around 82  :-\

Parked up at the office, it went past 85 up to 90. Then stat must have opened more and brought it back down to 80, then onto 85 again. Fan did not turn on, so must have been via the stat.

I do have a slight leak from the coolant pipe on the stat that runs to the throttle body, but then temp changes don't appear right.

Normally once on 85c it would stay there, no matter what.  :-\
Title: Re: 2.2 Petrol Stat Change
Post by: johnnydog on 25 January 2016, 10:12:52
What is the heater temperature like? On hot is it pumping out very hot or just warm?
I have a 2.6 that has hot air from the heater, but the actual temperature gauge barely gets to the first mark on the gauge. I am thinking that maybe the sender unit that isn't registering the correct temp to the gauge.
On an old VW Golf GTi MkIV that we had years ago, the sender unit also sent the temperature readings to the ecu regarding the air fuel mixture, so a dodgy sensor gave the wrong info resulting in incorrect fuelling. Don't know whether this aspect applies to an Omega....
Title: Re: 2.2 Petrol Stat Change
Post by: tunnie on 25 January 2016, 10:18:56
Heat is good, perhaps not the cooking heat it's been before. But still very hot.

I'm thinking air pockets/trapped air, but then I might not get heat at-all  :-\
Title: Re: 2.2 Petrol Stat Change
Post by: 05omegav6 on 25 January 2016, 11:29:09
Heat is good, perhaps not the cooking heat it's been before. But still very hot.

I'm thinking air pockets/trapped air, but then I might not get heat at-all  :-\
Heater set to Hi, fan to one bar, then expansion cap off and run it until the fans kick in twice, cap back on and give it a run, then report back :y

Don't forget, start this from cold and once done, again from cold, check the stat to rad hose as it warms up :y
Title: Re: 2.2 Petrol Stat Change
Post by: tunnie on 25 January 2016, 11:33:18
Getting fan to kick in a? That's quite hard on the 2.2, only tend to hear that on a hot summers day  ;D

I did run it for a bit, burping the air out, but will admit, did not keep cap off the whole time. Put it back on when warming up.
Title: Re: 2.2 Petrol Stat Change
Post by: 05omegav6 on 25 January 2016, 11:35:08
That's where you've gone wrong, cap stays off until it's hot :y
Title: Re: 2.2 Petrol Stat Change
Post by: tunnie on 25 January 2016, 11:56:30
I might do this before my drive home, get it hot with cap off, before setting off.

Might look like a bit of a n00b reving the car with bonnet up in the multi-story at work, but ahh well  ;D
Title: Re: 2.2 Petrol Stat Change
Post by: Field Marshal Dr. Opti on 25 January 2016, 12:45:31
Ta  :y

A little job for the weekend  :)

Surely your new nipper is now old enough to to change a stat. :D ;D
Title: Re: 2.2 Petrol Stat Change
Post by: EMD on 25 January 2016, 14:02:35
Bet that Kirsty Gallacher would give you a hand burping it  ::)
Title: Re: 2.2 Petrol Stat Change
Post by: 05omegav6 on 25 January 2016, 14:12:52
I might do this before my drive home, get it hot with cap off, before setting off.

Might look like a bit of a n00b reving the car with bonnet up in the multi-story at work, but ahh well  ;D
Don't rev it, just left it warm up naturally at idle... key is heater temp on Hi to ensure a full supply through the matrix and fan on its lowest setting so as not to draw too much heat from the coolant :y
Title: Re: 2.2 Petrol Stat Change
Post by: tunnie on 25 January 2016, 14:30:22
I might do this before my drive home, get it hot with cap off, before setting off.

Might look like a bit of a n00b reving the car with bonnet up in the multi-story at work, but ahh well  ;D
Don't rev it, just left it warm up naturally at idle... key is heater temp on Hi to ensure a full supply through the matrix and fan on its lowest setting so as not to draw too much heat from the coolant :y

Fair enough  :y

Although from experience it takes the 4pots feking ages to heat up.  :)
Title: Re: 2.2 Petrol Stat Change
Post by: STEMO on 25 January 2016, 16:00:16
My little 1.4 would sit there all day without the fans kicking in. Don't think I've ever heard them.
Title: Re: 2.2 Petrol Stat Change
Post by: Field Marshal Dr. Opti on 25 January 2016, 16:13:40
My little 1.4 would sit there all day without the fans kicking in. Don't think I've ever heard them.

Do they actually work? ::)
Title: Re: 2.2 Petrol Stat Change
Post by: STEMO on 25 January 2016, 16:28:41
My little 1.4 would sit there all day without the fans kicking in. Don't think I've ever heard them.

Do they actually work? ::)
Why wouldn't they? It's not a 15 year old banger you know.  ;D
Title: Re: 2.2 Petrol Stat Change
Post by: tunnie on 25 January 2016, 16:31:24
Currently sat in the car, as predicted taking ages to heat up. Normally have to rev it a bit to get it to warm up. If it does not lift off end stop in next 5 mins, i will be asking it to heat up a bit quicker  ;D  ;D
Title: Re: 2.2 Petrol Stat Change
Post by: 05omegav6 on 25 January 2016, 16:45:07
Currently sat in the car, as predicted taking ages to heat up. Normally have to rev it a bit to get it to warm up. If it does not lift off end stop in next 5 mins, i will be asking it to heat up a bit quicker  ;D  ;D
Typical yoof... no patience  ;D
Title: Re: 2.2 Petrol Stat Change
Post by: tunnie on 25 January 2016, 18:02:28
Well it kind of worked. Got it to 85/7c. Never going to get fans on, when car is on top floor of a multi story with wind blowing.

Popped cap on, left work. For about 3 miles stayed at 85c, then dipped down to 79c where it stayed no matter what. Heaters hot max, cold max, stop start traffic, 40/50/60/70mph all same speed.

It did finally pick up to 85c when I came off the motorway, stopped and pulled away at lights. Then through town it stayed at 85c.  :-\

One thing I've not tried thinking about it, is run on petrol, not LPG. Might have to try that....
Title: Re: 2.2 Petrol Stat Change
Post by: TheBoy on 25 January 2016, 18:27:37
Dash reading correctly?
Title: Re: 2.2 Petrol Stat Change
Post by: tunnie on 25 January 2016, 18:31:37
Dash reading correctly?

My code reader thing appears to have stopped working, so can only assume so.
Title: Re: 2.2 Petrol Stat Change
Post by: TheBoy on 25 January 2016, 18:33:31
Dash reading correctly?

My code reader thing appears to have stopped working, so can only assume so.
Best you fix it then. Takes the mess of wind pissing out of the equation ;)
Title: Re: 2.2 Petrol Stat Change
Post by: tunnie on 25 January 2016, 18:37:58
Time for a new thread on that. Need to get a dedicated one, the cheapo mobile based one has been unreliable.
Title: Re: 2.2 Petrol Stat Change
Post by: flyer 0712 on 25 January 2016, 21:07:24
when i did my 2.2      as advised on here..cap off...heat set to high..no blowers on..left it running burping hoses as I went along and fans kicked in a few times,,took about 45 minutes and when heat came through,,realy hot,cap back on and took it for a run and was great heat....since then heat died down so flushed again and results were good...however now need to flush the whole system again with stat out then flush with water and then flush matrix separately ..then refill with antifreeze and then run it all up again.. :y :y
Title: Re: 2.2 Petrol Stat Change
Post by: tunnie on 27 January 2016, 18:40:13
Heat is always fine  :y

Today it refused to go above 75c for most of my commute, yet there was plenty of heat! Went up to 80c after leaving motorway and in traffic. Never hit 85 but traffic was kind today, less stop start.

Ordered a new code reader. So shall see.