Omega Owners Forum

Chat Area => General Car Chat => Topic started by: UrbanFox on 02 November 2010, 15:08:39

Title: RAH! damn car!
Post by: UrbanFox on 02 November 2010, 15:08:39
Having done the water pump and thermostat, it seems that my rad is now buggered! 

I cant think of anything else that could be causing the issue?  Over heating but when revving the car / driving it normally the temp goes to normal, but when stopped it hits the roof.

Damn cars!!!  >:(
Title: Re: RAH! damn car!
Post by: TheBoy on 02 November 2010, 15:33:08
Do the fans come on?
Title: Re: RAH! damn car!
Post by: UrbanFox on 02 November 2010, 15:47:22
the first stage comes on, but the second one doesnt.  I know it works because I can bridge the plug and the second stage is in.

The top water return only returns water to the header tank when the engine is rev'd.
Title: Re: RAH! damn car!
Post by: Welung666 on 02 November 2010, 19:56:36
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the first stage comes on, but the second one doesnt.  I know it works because I can bridge the plug and the second stage is in.
The top water return only returns water to the header tank when the engine is rev'd.

Would that not point to the 2nd stage fan switch?

Does the system build up pressure once warm?
Title: Re: RAH! damn car!
Post by: tidla on 02 November 2010, 22:00:55
how does the radiator look externally?. dont know the age of your motor (unless ive missed it) . seen some radiators with 1/3 of the cooling fins missing. on a hot running mig this might make the difference?
Title: Re: RAH! damn car!
Post by: UrbanFox on 16 November 2010, 16:25:51
Rad looks fine.

the system builds up alot of pressure when warm.

If I rev it the temp drops to about 92 degrees C.
Title: Re: RAH! damn car!
Post by: mrgreen on 16 November 2010, 17:17:13
check the rad when hot to see if there is any cold spots you may get away with a flush
Title: Re: RAH! damn car!
Post by: albitz on 16 November 2010, 17:45:28
I would suspect the water pump. :-/
Title: Re: RAH! damn car!
Post by: UrbanFox on 16 November 2010, 20:54:18
I'v done the water pump and thermostat (as mentioned in my first post).  Rad has been flushed more times than i care to mention.
Title: Re: RAH! damn car!
Post by: UrbanFox on 20 November 2010, 17:15:04
Any other suggestions?

Thanks!
Title: Re: RAH! damn car!
Post by: millwall on 20 November 2010, 20:31:23
definately sounds like a faulty waterpump
Title: Re: RAH! damn car!
Post by: Kneepad on 20 November 2010, 23:57:00
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I'v done the water pump and thermostat (as mentioned in my first post).  Rad has been flushed more times than i care to mention.

Have you tried flushing the whole system including the block?
Is your oil cooler working as it should?
Title: Re: RAH! damn car!
Post by: UrbanFox on 21 November 2010, 19:25:03
Yes the whole system has been flushed.  How can I tell if the oil cooler is working properly?

Once again, I *have* replaced the waterpump AND thermostat!!!
Title: Re: RAH! damn car!
Post by: Kneepad on 21 November 2010, 23:33:00

You will have to determine why your 2nd stage fan is not coming on, as already suggested possibly fan switch.
Viscous fan should also come on drawing air through the section of the rad where the engine oil flows (oil cooler) there is a feed and return pipe to this from the oil filter housing. The return pipe will be the cooler of the two.
Title: Re: RAH! damn car!
Post by: UrbanFox on 27 November 2010, 09:27:24
Car doesnt have a viscous fan - its a 3.0 V6 - sorry, I know that my car says its a TD!

The stage 2 doesnt kick in because it doesnt seem to be that hot at the switch itself. 

The heater is also pretty cold as well.

When I rev the car the temp drops.
Title: Re: RAH! damn car!
Post by: Kneepad on 27 November 2010, 21:48:23
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the first stage comes on, but the second one doesnt.  I know it works because I can bridge the plug and the second stage is in.

The top water return only returns water to the header tank when the engine is rev'd.

So how will a new radiator make any difference to the above?
You say temp is normal when driving i.e. rad is doing it's job.
Overheats when stationary i.e fans or pump are not doing their job. 
Title: Re: RAH! damn car!
Post by: UrbanFox on 28 November 2010, 12:05:55
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Quote
the first stage comes on, but the second one doesnt.  I know it works because I can bridge the plug and the second stage is in.

The top water return only returns water to the header tank when the engine is rev'd.

So how will a new radiator make any difference to the above?
You say temp is normal when driving i.e. rad is doing it's job.
Overheats when stationary i.e fans or pump are not doing their job. 

I dont know how a new radiator will make any difference - I havent bought one?

The temp sits around 90 - 92 degrees, and recently has started rising to 97 and then dropping again.  Plus the cold heater now.
Title: Re: RAH! damn car!
Post by: Kneepad on 28 November 2010, 12:27:49
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it seems that my rad is now buggered!

I assumed you may have been contemplating replacing your rad.  ;)


Title: Re: RAH! damn car!
Post by: UrbanFox on 28 November 2010, 16:24:16
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it seems that my rad is now buggered!

I assumed you may have been contemplating replacing your rad.  ;)

It was on the table at one point, but the problem must be else where. :) and :(
Title: Re: RAH! damn car!
Post by: Kneepad on 28 November 2010, 17:36:08
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it seems that my rad is now buggered!

I assumed you may have been contemplating replacing your rad.  ;)

It was on the table at one point, but the problem must be else where. :) and :(


And,  I hope someone more senior will step in and give thier opinion as I don't want to mention the p$&p again as you've done that.
Title: Re: RAH! damn car!
Post by: UrbanFox on 08 December 2010, 14:33:35
Thanks chief!

I guess the car is going to have to go to the garage then :(