Viscous fan oil

[ROMEROTECH]

That answers my question. Ta

[Albannach]

s'not, its an any Surf thing.

Really?

[ROMEROTECH]

I've just had a look at a 1KZ-TE engine workshop manual and it doesn't mention an auxilliary fan. There seems to be a difference of opinion here so i'd best take a look.

[TonyN]

Really?

Yup, well its a 2nd Gen thing, 3rd Gens don't have them, any 2nd Gen with A/C has them, so all 2nd Gen Surfs will have one.

They come on when you switch the A/C on, and as a bonus they are wired to back up the cooling sytem when it reaches 100-105 deg ish.

[Sancho]

Yup, well its a 2nd Gen thing, 3rd Gens don't have them, any 2nd Gen with A/C has them, so all 2nd Gen Surfs will have one.

They come on when you switch the A/C on, and as a bonus they are wired to back up the cooling sytem when it reaches 100-105 deg ish.

In addition to the AC fans? Does that mean they have four fans?

[TonyN]

Yup.

Ok here goes....

Any 2nd Gen surf with A/C rad in front of the main rad has the pusher electric fan behind the grille, this comes on with the A/C, and is also auxi engine temp fan.

Some 2.4 2nd Gens have the A/C rad behind the bash palte, with 2 fans on top, that are A/C only, and the front fan is temp switched only.

I have vauge doubts about the 3.0 electric fan being temp switched now its been brought up, I've never heard one running when A/C isn't on, but 3.0's run cooler than 2.4's so you wouldn't hear it often. You can make the 2.4 one come on by shutting off the engine when its hot, then leaving the ignition on, as the temp rises it'll come on. The 3.0 dosn't seem to suffer from 'heat soak' when turned off so badly so not noticed it.

[Sancho]

Well, that cleared that one up. Every day's a school day.

Must be why 2.4s are so slow. All power is diverted to the alternator to run the fans....

[TonyN]

[Albannach]

I have vauge doubts about the 3.0 electric fan being temp switched now its been brought up,

I always thought it was AC only, there isn't an extra switch to switch it on on a high temperature?

[TonyN]

I always thought it was AC only, there isn't an extra switch to switch it on on a high temperature?

As you probably know, 2.4's have an extra switch on the filler housing, next to the temp gauge sensor, if you unplug it the fan comes on, and the block temp sensor by the oil filter.

The 3.0 has the gauge sensor at the front of the head and block temp sensor by the oil filter, so is a thermo switch short, with is why I said on reflection I'm not sure about the 3.0's front fan being an auxi cooling fan.

But the fan is there on all 2nd Gen Surfs, so I technically stand by first comment...

[Albannach]

But the fan is there on all 2nd Gen Surfs, so I technically stand by first comment...

Very tenuous...

[TonyN]

Very tenuous...

I try to fit in.

[shokenore]

Well, that cleared that one up. Every day's a school day.

Must be why 2.4s are so slow. All power is diverted to the alternator to run the fans....

How rude!!!
Of course you are assuming that the air con is still working on the 2.4 so that would be 2 fans less to run.