Cooling system help... - Page 3

Gmac · 25-01-17, 07:00 AM

So I'd like to recap a few things here....

http://audi.7zap.com/en/rdw/audi+80+.../9/919-919060/

No.7 from the above diagram, is the thermal switch for the afterrun, turning the fans on when the ignition is off, and the car is hot under the bonnet (how hot??, and how is it taking this temp?)

http://audi.7zap.com/en/rdw/audi+80+.../9/959-959050/

No.19 from the above diagram, is the actual temp of the fluid, after being round the radiator. This should activate at 95 degrees? (first stage, both fans on but slower than second stage???) and then higher, what figure?? (Second stage?? Both fans running but harder than first stage?). And to test that the loom to it is working, one needs to bridge the wiring ( when unplugged from the switch) and the fan should come on, with the keys in the ignition.

Then finally....

http://audi.7zap.com/en/rdw/audi+80+.../9/919-919060/

No.11/12 and 13 from the above diagram, send temperature to the ecu and the instrument gauge.

IF ANYONE CAN add to the above, especially interested in temps for when the fan, controlled by no.19 kicks in, then please reply and hopefully knowledge will be gained!!! Many thanks!

I'll report back on the wiring to my no.19, and see if I can get the fan/s to turn on..

mikes2 · 25-01-17, 09:12 AM

have you got a 2 pin or 3 pin #19 ?

2 pin comes on at 95 and goes off at 90.
3 pin comes on stage 2 @ 95, off at 84. stage 3 on @ 102, off at 91

afterrun #7 comes on at 110 and goes off at 103

Gmac · 25-01-17, 09:39 AM

Quote:

Originally Posted by mikes2

have you got a 2 pin or 3 pin #19 ?

2 pin comes on at 95 and goes off at 90.
3 pin comes on stage 2 @ 95, off at 84. stage 3 on @ 102, off at 91

afterrun #7 comes on at 110 and goes off at 103

I'll go and check now..

Gmac · 25-01-17, 09:52 AM

Right e ho... Mine is a two pin (although it's a three pin but with only two metal connectors in it, and the switch itself has two spades)

Tested it just now with the ignition on, using a paperclip and leatherman (just about took my finger off! even though i'd thought about the fan coming on! lol, plonker) and yep the fan whizzes (is that a word? haha) up.

I also checked no.7 and with the ignition on, it does nothing, with the ignition off, it also whizzes up!!

So loom is all good. Looks like i need a new no.19

sinbin5t · 25-01-17, 03:09 PM

the finger bit is funny

Sort of thing i have done too

25-01-17, 09:12 AM	#23
mikes2 4 ring whore! Classic Audi Club Member Join Date: Nov 2007 Location: Polmont Posts: 2,617	have you got a 2 pin or 3 pin #19 ? 2 pin comes on at 95 and goes off at 90. 3 pin comes on stage 2 @ 95, off at 84. stage 3 on @ 102, off at 91 afterrun #7 comes on at 110 and goes off at 103 __________________ 1991 90 quattro 20v sport 1991 90 quattro

24-01-17, 05:11 PM	#21
sinbin5t 4 ring whore! Classic Audi Club Member Join Date: Jan 2010 Location: Where a spike points skywards Posts: 12,960

25-01-17, 07:00 AM	#22
Gmac Grown up member Classic Audi Club Member Join Date: Feb 2015 Location: Aberdeenshire Posts: 686	So I'd like to recap a few things here.... http://audi.7zap.com/en/rdw/audi+80+.../9/919-919060/ No.7 from the above diagram, is the thermal switch for the afterrun, turning the fans on when the ignition is off, and the car is hot under the bonnet (how hot??, and how is it taking this temp?) http://audi.7zap.com/en/rdw/audi+80+.../9/959-959050/ No.19 from the above diagram, is the actual temp of the fluid, after being round the radiator. This should activate at 95 degrees? (first stage, both fans on but slower than second stage???) and then higher, what figure?? (Second stage?? Both fans running but harder than first stage?). And to test that the loom to it is working, one needs to bridge the wiring ( when unplugged from the switch) and the fan should come on, with the keys in the ignition. Then finally.... http://audi.7zap.com/en/rdw/audi+80+.../9/919-919060/ No.11/12 and 13 from the above diagram, send temperature to the ecu and the instrument gauge. IF ANYONE CAN add to the above, especially interested in temps for when the fan, controlled by no.19 kicks in, then please reply and hopefully knowledge will be gained!!! Many thanks! I'll report back on the wiring to my no.19, and see if I can get the fan/s to turn on..

25-01-17, 09:52 AM	#25
Gmac Grown up member Classic Audi Club Member Join Date: Feb 2015 Location: Aberdeenshire Posts: 686	Right e ho... Mine is a two pin (although it's a three pin but with only two metal connectors in it, and the switch itself has two spades) Tested it just now with the ignition on, using a paperclip and leatherman (just about took my finger off! even though i'd thought about the fan coming on! lol, plonker) and yep the fan whizzes (is that a word? haha) up. I also checked no.7 and with the ignition on, it does nothing, with the ignition off, it also whizzes up!! So loom is all good. Looks like i need a new no.19

25-01-17, 03:09 PM	#26
sinbin5t 4 ring whore! Classic Audi Club Member Join Date: Jan 2010 Location: Where a spike points skywards Posts: 12,960	the finger bit is funny Sort of thing i have done too