'94 940 Cooling Fan not turning off
#1
'94 940 Cooling Fan not turning off
Hey all. This is my first post here. Here goes...
The electric fan in my '94 940 is not shutting off as soon as it used
to and is draining the battery. I should point out that It does shut
off eventually, it just takes a while. The car is equipped with a bosch
ignition system. To my knowledge, the ECU uses a temp signal from the
ECT to control when the fan turns on/off. I've recently replaced the
ECT so I've ruled that out. This leaves the culprit to be a sticking
cooling fan relay, found behind the battery. It looks like this:
Is there a way to test this relay to determine if its sticking? I dont
really understand how this relay works, and any help would be really
really appreciated!!!
Thanks again!
Roland
p.s. I've already tried looking for a thermo sensor in the radiator
which might control the fan, and I dont believe my system uses one.
The electric fan in my '94 940 is not shutting off as soon as it used
to and is draining the battery. I should point out that It does shut
off eventually, it just takes a while. The car is equipped with a bosch
ignition system. To my knowledge, the ECU uses a temp signal from the
ECT to control when the fan turns on/off. I've recently replaced the
ECT so I've ruled that out. This leaves the culprit to be a sticking
cooling fan relay, found behind the battery. It looks like this:
Is there a way to test this relay to determine if its sticking? I dont
really understand how this relay works, and any help would be really
really appreciated!!!
Thanks again!
Roland
p.s. I've already tried looking for a thermo sensor in the radiator
which might control the fan, and I dont believe my system uses one.
#2
RE: '94 940 Cooling Fan not turning off
I always have a tester relay to use but try looking at the wiring diagram in the link and see if it helps.
http://www.volvotechinfo.com/WD123/
http://www.volvotechinfo.com/WD123/
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