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[Spearmint]

I changed what I perceived to be the fan switch when I removed / flushed out / refitted the rad which was the 2 pin switch that sits under the big fat hose on the passenger side of the rad.

I did the old boiling water test on the switch where the resistance didn't even drop down to below 150 Mega Ohms.

The fans still won't switch on though I know they work as I zapped them with 12v hence they spun into life.

So either I changed the wrong item or there is another switch in the system?

Any help as always is much appreciated.

[unlucky alf]

im the same as you & thought there was only the one fan switch, when you gave the fan 12v did you do it by bridging the two wires to that switch? i was wondering if perhaps there is a bad wire somewhere on that circuit, im also wondering if they are relay switched, i would start by shorting out the switch wires & go from there

[TheBoy]

yeah, chuck a paperclip in the plug wiring to prove wiring/relays/fuses

[Spearmint]

I fogot to note that I did find 12v at the plug though I didn't do any line to line checks so looks like that is next.

It make sense though with just chucking a paperclip in there. I hate trying to work out electrical gremlins with no diagrams!

[Spearmint]

Just done the check as noted above. The fans did not activate but I did hear a relay clicking over.

What else is in the circuit?

[TheBoy]

Just done the check as noted above. The fans did not activate but I did hear a relay clicking over.

What else is in the circuit?

Big green (30A?) fuses near relay.

BTW, the Haynes book of 'dangle berries' does have the TD wiring diagrams in, even though it doesn't cover the engine mechanically

[Spearmint]

Cheers Theboy, looks like I had better get my ass down to Halfrauds then.

[TheBoy]

Cheers Theboy, looks like I had better get my ass down to Halfrauds then.

egay for haynes, halfrauds too expensive (unless you have trade card)

[Spearmint]

Yup, trade carded up satis though I shouldn't really have one!

[Spearmint]

Anyways, it was the 30amp fuse. Replaced that and the fans come to life.

The car is still running too hot for my liking. 95'c but then it just sort of hovers around that mark.

So that's:

A flushed out Rad / block etc.
A new Water Pump.
A new Thermostat.
A new Rad Fan Switch.
50/50 mix Coolant.
No leaks.
No Mayo.
Big fat pipe does become firm when the temps are that high but you can still press it.

I am at a loss. Any suggestions other than a can of petrol and a match?

[charlie]

dont do anything about this, i was going though the tis today looking for something else, when i found a update or mod , about 2.5td autos with air con getting to hot, something to do with the airflow though the grill.

[Ghost]

If you look from the front ( or Back ) is your rad clean? ( ie bad airflow / cooling )

[Spearmint]

Looked ok when I had it out for flushing etc. Cleaned all the dead leaves and gunk from it anyway.

So what was this update then? I don't fancy ripping the air con rad out as that would be a little OTT.

[Spearmint]

Maybe chop away all that plastic trim at the front?

[TheBoy]

if it runs at the midpoint on gauge (95c for prefacelifts), then that is fine. Perfect in fact.  As long as it doesn't go anywhere near 100c