Turbo-tango

Brothers of the round table I need your wisdom n guidance yet again!!

Been given permission off the good lady to work on me car at last! Yippeeeee!!
So today I wanna tackle the mess the previous owner has left me with?

Both rad fans are wired together? And wire ran to switch on dashboard??
I want to get these fans working off the original switch so they run themselves and I ain't gotta worry about remembering to switch them on n off! Grr!!!

Where can I find the censor that tells the fans to cut in??
All the original wiring has been cut back so I can't trace anything?? Could shoot the previous **** owner for this!!!

I know there's a water temp censor under the alternator but I've been told that that just sends info to the dashboard so the heat gauge (that I'm currently watching more than a bloke in a dead end job watching a clock!) tells what temp the engine is??

Can anyone help on this
Ps my car is a 1998 classic shape turbo 2000!
Cheers in advance guys for any rays of lights on this?

joz8968

iTrader: (13)

How weirdly coincidental! - just got an email through re. a solution for this...

http://www.demon-tweeks.co.uk/motors...fan-controller

You could try the kit above - 'expensive' workaround though.

Turbo-tango

Good call..and yes it would defo do the job!! But as stated "expensive" and more importantly UGLY lol! Don't really fancy chopping me samco's for that??
Muchly appreciated tho fella!!.
I was more thinking if some one could point out where this censor is I was gonna replace it just to be safe then new wire to fans.....? If that easy lol...

joz8968

iTrader: (13)

Try contacting API, RCM etc. They should be able to tell you the OEM set-up. That way you can 'reverse engineer' it so as to be able to try to put it back to OEM...

ianbott

The original setup uses a wire from the ecu which goes to earth when the fans are needed. This earth completes the circuit in the an relay exactly how the fuel pump is wired. Unsure why you would want it any other way. The PO must of been mad lol. Are you running the standard ecu?

Turbo-tango

Yes mate!

ianbott

P.S you have two temperature sensors in your coolant crossover manifold, one is for the dash gauge and the other is for the ecu to know when to put the fans on. The newage cars only seem to have one coolant sensor which feeds. Oth the ecu and gauge.

JTinnovations

iTrader: (2)

According to the wiring diagram I have for a 97-98, the coolant sensor is wired direct to the ECU on B136-3 (B3) (the ECU 22 pin connector). There are two relays, one for each fan, driven by ECU pins B135-8 (C8) and B135-16 (C16) (16 pin connector on the ECU).

Here's the wiring I have - it's for a LHD model with A/C, but I think the wiring is the same for a RHD.



It may be that there is a faulty relay, which the previous owner "fixed" by rewiring it all, or maybe just a fuse gone lol.

Turbo-tango

Mate that diagrams fab!! Decided I'm gonna pass this job onto a pro!! And gonna print off this diagram to help them!!!...also the previous owner has took the pipe off the air on pump!?(the pipe that goes from pump to alloy connector behind passenger headlight! Which ive also got to sauce as its missing??.was gonna get that n get regased but now seeing that there's supposed to be on of the fans dedicated to the aircon and one to the water rad it's put air con repair on hold..but cheers for the help lads!!very muchly appreciated
Till the fans are rewired