Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: donna-marie on 21 May 2007, 10:55:09

Title: Thermostat
Post by: donna-marie on 21 May 2007, 10:55:09

think i need a new one for my 2.5 CD v6, temperature going to Red now, fan is cooling it down, loosing no water from radiator so me thinks thermostat. Could i do it myself?

Title: Re: Thermostat
Post by: Marks DTM Calib on 21 May 2007, 10:57:47

If the fans are cooling it down then the stat must be opening ergo...the stat is ok.

Have a quick look in the engine bay ECU box (on the right) and check the two 20A fuses for the two front mounted fans....

Title: Re: Thermostat
Post by: donna-marie on 21 May 2007, 11:01:04

they look ok, should i replace anyway, i sell automotive consumables (office based) so i'll pick up an assortment and replace all.

Title: Re: Thermostat
Post by: Admin on 21 May 2007, 13:37:57

Does the temperature climb rapidly when you are stationary and stay lower when cruising?

Title: Re: Thermostat
Post by: hotel21 on 21 May 2007, 13:41:20

Quote

Does the temperature climb rapidly when you are stationary and stay lower when cruising?

If I said that mine has a sometime tendancy to do this, then what would that mean??

Title: Re: Thermostat
Post by: Admin on 21 May 2007, 13:42:48

I would say when was your water pump last changed?

Title: Re: Thermostat
Post by: hotel21 on 21 May 2007, 13:43:48

About 15k miles ago with the belt and tensioners....

Title: Re: Thermostat
Post by: Marks DTM Calib on 21 May 2007, 13:49:28

I wouldn't, I would sudgest a good coolant flush and given the good results with the Forte stuff.......

Title: Re: Thermostat
Post by: Admin on 21 May 2007, 13:54:33

And Marks idea is cheaper and easier to do first.... ;)

Title: Re: Thermostat
Post by: Markjay on 21 May 2007, 15:43:33

Just for info, on the V6 you will need to take-off the intake plenum, intake manifold (with injector rail), and intake flange, in order to gain access to the thermostat housing. The thermostat itself is slightly more exepnsive than usual due to the fact that it comes with the housing. So while doable, it is time consuming and should only be done after other more likely/trivial causes have been ruled out as suggested above...

Other than that follow the advice from Mark DTM / Laidback66 / TheBoy and you can't go wrong  ;)

Title: Re: Thermostat
Post by: donna-marie on 21 May 2007, 16:35:55

Ye the temp is around 95-97ish when crusing but as soon as stopped in traffic goes to RED then starts vapour up side of bonnet driver side. All levels of fluids are correct.

Title: Re: Thermostat
Post by: Marks DTM Calib on 21 May 2007, 16:50:08

Can you hear the engine cooling fans kicking in.....

Title: Re: Thermostat
Post by: donna-marie on 21 May 2007, 16:51:51

yep but not till hitting red
and theres a bad smell (rubber) for a few moments then goes off

Title: Re: Thermostat
Post by: Markjay on 21 May 2007, 17:01:26

Looks like fans kick-in too late?

Faulty thermoswitch...? or blocked / airlocked rad preventing coolant from circulating to the thermoswitch area...?

Title: Re: Thermostat
Post by: TheBoy on 21 May 2007, 21:25:53

Quote

I wouldn't, I would sudgest a good coolant flush and given the good results with the Forte stuff.......

I can vouch that the Forte Cooling System Flush is very impressive, far better than the Holts type stuff....

Title: Re: Thermostat
Post by: Markjay on 21 May 2007, 23:08:26

Quote

Quote

I wouldn't, I would sudgest a good coolant flush and given the good results with the Forte stuff.......

I can vouch that the Forte Cooling System Flush is very impressive, far better than the Holts type stuff....

Just bought two bottles of Holts at Halfords for the summer coolant change  >:(

Title: Re: Thermostat
Post by: Markie on 21 May 2007, 23:40:23

Quote

Quote

I wouldn't, I would sudgest a good coolant flush and given the good results with the Forte stuff.......

I can vouch that the Forte Cooling System Flush is very impressive, far better than the Holts type stuff....

where did you get this renowned stuff....

Title: Re: Thermostat
Post by: Marks DTM Calib on 22 May 2007, 08:15:00

There are two types, a coolant flush and a bio de-greaser, you want the coolant flush for a standard coolant change....the bio-degreaser works well after oil cooler failure.

Title: Re: Thermostat
Post by: Gaffers on 22 May 2007, 14:44:23

Quote

Quote

Quote

I wouldn't, I would sudgest a good coolant flush and given the good results with the Forte stuff.......

I can vouch that the Forte Cooling System Flush is very impressive, far better than the Holts type stuff....

Just bought two bottles of Holts at Halfords for the summer coolant change  >:(

ditto  >:( :-/ :'( :-[

Title: Re: Thermostat
Post by: Marks DTM Calib on 22 May 2007, 15:42:45

This for the oil cooler cleaning...

http://cgi.ebay.co.uk/Forte-Bio-De-Greaser_W0QQitemZ120001913941QQihZ002QQcategoryZ122141QQcmdZViewItem

This for the standard flush

http://cgi.ebay.co.uk/FORTE-Cooling-System-Flush_W0QQitemZ330077166914QQihZ014QQcategoryZ25632QQrdZ1QQssPageNameZWD1VQQcmdZViewItem

Title: Re: Thermostat
Post by: JamesV6CDX on 22 May 2007, 21:28:06

Quote

This for the oil cooler cleaning...

http://cgi.ebay.co.uk/Forte-Bio-De-Greaser_W0QQitemZ120001913941QQihZ002QQcategoryZ122141QQcmdZViewItem

This for the standard flush

http://cgi.ebay.co.uk/FORTE-Cooling-System-Flush_W0QQitemZ330077166914QQihZ014QQcategoryZ25632QQrdZ1QQssPageNameZWD1VQQcmdZViewItem

Gloucester - I work there, so would save the £5.50 postage

Just wonder if enough of us were interested, maybe we could negotiate a bulk buy for the forum...