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Home -> Forums -> Electrical -> Radiator Fans still refuse to work at 90 degrees.

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Author Subject: Radiator Fans still refuse to work at 90 degrees.
oldbrownshoe

Seasoned Pro

Location: Holon Israel

Registered: 08 Aug 2008

Posts: 1,795

Status: Offline
Post #1
The motors is working if i use direct feed from the battery,
i replaced the Bitron Ecu with new one and they still silent,
i checked the fuses in the box near the battery and replaced the burned ones.
still want start,
i pulled the brown temperature sensor thermistor and nothing,
if i feed the #5 relay socket directly from the + in the battery it should switch one of the fans ?
what other choices i 'v left with ??

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French military victories?
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Posted 13th Jan 2015 at 20:05
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fatlapit

Seasoned Pro

Location: STOCKSFIELD

Registered: 02 Nov 2010

Posts: 3,040

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Post #2
relays in fan cowl??

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Posted 13th Jan 2015 at 20:28
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oldbrownshoe

Seasoned Pro

Location: Holon Israel

Registered: 08 Aug 2008

Posts: 1,795

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Post #3
how can i check if the relays working ?
but before that i need to check continuity while the relays outside of it's socket.

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French military victories?
Did you mean French military defeats?
Posted 13th Jan 2015 at 20:46
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Chr1sch

Seasoned Pro

Location: Worcester

Registered: 02 Aug 2014

Posts: 1,025

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Post #4
I have a similar scenario but just with one fan, make sure you share anything you find :-)
Posted 14th Jan 2015 at 07:14
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oldbrownshoe

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Location: Holon Israel

Registered: 08 Aug 2008

Posts: 1,795

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Post #5
I will.
i think i got it it now, i need to feed only the socket of leg #5 of the right fan relay
since the right fan motor is grounded directly oppose to the left fan motor.
if it wont operate the motor than there is 2 options :
1) No continuity between the relay and the motor.
2) the motor don't have earth.

________________________________________

French military victories?
Did you mean French military defeats?
Posted 14th Jan 2015 at 09:29
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oldbrownshoe

Seasoned Pro

Location: Holon Israel

Registered: 08 Aug 2008

Posts: 1,795

Status: Offline
Post #6
Tried the wire feeding to right socket #5 now,
as a result both fans spun immediately.
conclusion:
1) there is grounding.
2) i don't need to disassemble the radiators again (what a relief!)
3) the relay died or there is other discontinuity between the battery and the relay.

________________________________________

French military victories?
Did you mean French military defeats?
Posted 14th Jan 2015 at 10:08
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Chr1sch

Seasoned Pro

Location: Worcester

Registered: 02 Aug 2014

Posts: 1,025

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Post #7
That's v interesting thanks, when you say grounded directly opposite the motor do you mean the one on the chasis leg under the battery tray?
Posted 14th Jan 2015 at 11:32
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oldbrownshoe

Seasoned Pro

Location: Holon Israel

Registered: 08 Aug 2008

Posts: 1,795

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Post #8
I guess.
it's difficult to track the ground wire from the motor to it's grounding, the two wire is warped
together with isolation tape than it enters plastic tube, but your guess look very reasonable.
i stuck now with burned multimeter, but reading past text in other forum i published 2 years ago,
i founded that i had the same problem and back then it was faulty relay, one of the 2 black that
located in the plastic box besides the battery.

________________________________________

French military victories?
Did you mean French military defeats?
Posted 14th Jan 2015 at 13:09
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welshpug!

Capt Pedantic

Location: Bigend, Wales.

Registered: 27 Mar 2007

Posts: 25,838

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Post #9
Check the fuses in the shunt box, the earth is a two pin yelloy plug into the inner wing insude the box

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need a part number? get on here - http://public.servicebox.peugeot.com

Bring on the Trumpets.

Posted 14th Jan 2015 at 13:16
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oldbrownshoe

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Location: Holon Israel

Registered: 08 Aug 2008

Posts: 1,795

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Post #10
what you mean by "shunt box" ?
is it the one near the battery or the one beneath the steering wheel ??

and why do i need to check the earth fuse after i checked the motors with direct feeding ?
if the earth fuse burned the motors wouldn't spun.

________________________________________

French military victories?
Did you mean French military defeats?
Posted 14th Jan 2015 at 13:42
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welshpug!

Capt Pedantic

Location: Bigend, Wales.

Registered: 27 Mar 2007

Posts: 25,838

Status: Offline
Post #11
no fuse on the earth but yes if you gave power and they work then the earth is fine.

________________________________________

need a part number? get on here - http://public.servicebox.peugeot.com

Bring on the Trumpets.

Posted 14th Jan 2015 at 14:45
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oldbrownshoe

Seasoned Pro

Location: Holon Israel

Registered: 08 Aug 2008

Posts: 1,795

Status: Offline
Post #12
The problem solved finally !
my mechanic found what i was aware for all that time but didn't consider as problem,
checked and replaced it,
it was one of the fuse holders in that box by the battery, disable it and wired new one independently,
with a little bit of soldering.

________________________________________

French military victories?
Did you mean French military defeats?
Posted 14th Jan 2015 at 17:45
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