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[bogit]

i know i mentioned this many moons ago, btut decided to have a proper look as i was waiting on some other parts.
at a gentel pace the coolant soon goes up to 95-97.5 c on the guage. hard driving makes it get there a lot quicker.
the coolant is geting hot,both the top and bottom hoses are very hot.
the aux water pump on the cruise control is opumping away quite happily. the rad fan doesnt seem to kick in at all. the 2 push fans come on with the air con.
the aux pump down by the passenger side of the rad isnt making any noises when hot or cold.


sticking the heater on full blast quickly brings the temp back down to around 95c very quiclkly. turning t off allows the temp to rise back up.

removed the white relay and the cruise control pump kept on pumping.dont have a spare to swap it with

removed the top and bottom hoses, pushed water through the rad with a mains pressure hose,seams to flow freely, both ways. flushed back up through the engine through top and bottom pipes.
water flowing freely i would guess.

any other suggestions ??

oh and the radiator aux pump works when i power straight from the battery.

the main rad fan works if i remove the switch plug and bridge it out.but seams to have no effect on the temp.

 :-/

im praying its not the water pump, im still recovering from a month long holiday and christmas

[Marks DTM Calib]

I have a known good V6 rad you can have for free.......it has the auto box cooler on it but, if you have a manual then just leave it disconnected.

It also has the fan switch and fan but, no aircon switch (can swap it over from yours) which is again known good.

[Marks DTM Calib]

iremoved the white relay and the cruise control pump kept on pumping.dont have a spare to swap it with

Correct operation, the coolant pump here is controlled by the climate control panel and is used to increase circulation through the heater matrix.

[TheBoy]

If the fans don't come on when temp gets to 96/97, but does when fan switch shorted, then switch fubar (or insufficent circulation to allow fan switch to get warm).

Check for hot/cold spots on rad (ideally by removing and pouring boiling water in) - need to be quick, as obviously the rad will conduct heat throughout...

[Dazzler]

If you short out the rad switch to make te fans come on does the temperature come down fairly quickly to its normal temp?
If it does then as The Boy has said change the fan switch and try again.

[bogit]

nope, bridging the fan to full power constantly does nothing for the temp,except the noise scaring small dogs and cats in the area.
i thought it was a flow problem in the rad/ or dead spots  to start with,but after flushing wasnt sure.
but swapping the rad out is the easyer of several jobs so,,,,,,,