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Author Topic: Thermostat  (Read 1797 times)

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donna-marie

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Thermostat
« 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?
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Marks DTM Calib

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Re: Thermostat
« Reply #1 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....
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donna-marie

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Re: Thermostat
« Reply #2 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.
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Admin

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Re: Thermostat
« Reply #3 on: 21 May 2007, 13:37:57 »
Does the temperature climb rapidly when you are stationary and stay lower when cruising?

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hotel21

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Re: Thermostat
« Reply #4 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??
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Re: Thermostat
« Reply #5 on: 21 May 2007, 13:42:48 »
I would say when was your water pump last changed?
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hotel21

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Re: Thermostat
« Reply #6 on: 21 May 2007, 13:43:48 »
About 15k miles ago with the belt and tensioners....
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Marks DTM Calib

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Re: Thermostat
« Reply #7 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.......
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Admin

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Re: Thermostat
« Reply #8 on: 21 May 2007, 13:54:33 »
And Marks idea is cheaper and easier to do first.... ;)

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Markjay

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Re: Thermostat
« Reply #9 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  ;)
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donna-marie

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Re: Thermostat
« Reply #10 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.
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Marks DTM Calib

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Re: Thermostat
« Reply #11 on: 21 May 2007, 16:50:08 »
Can you hear the engine cooling fans kicking in.....
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donna-marie

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Re: Thermostat
« Reply #12 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
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Markjay

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Re: Thermostat
« Reply #13 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...?

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TheBoy

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Re: Thermostat
« Reply #14 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....
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