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Topic: Help please -coolant fans (Read 4584 times) |
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TilleyBoy
Newbie
1998 cosworth scorpio ,
Posts: 27
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Help please -coolant fans
« on: Oct 4th, 2014, 2:23pm » |
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My gramps 97 cosworth scorpio coolants fans just won't cut in!!
We started by checking all fuses and both fuse boxes all ok and clean as a whistle as it's been garaged for many years.
Checked the r34 relay which seems ok.
Checked fans work by giving direct power, both ok
Temperature sensor looked manky so changed it today.
Run her up, fans cut in on start for 10 secs then went off run up to just below red and they still didn't come on 
Does anyone know where I should start looking next as this is the only thing stopping me putting this awesome car back on the road.
Any ideas greatly appreciated .
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a900one
Full Member
A scorpio is for life not just for christmas
Posts: 980
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Re: Help please -coolant fans
« Reply #1 on: Oct 4th, 2014, 10:10pm » |
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Have you tried to run them by putting the aircon on, I think they should run at low speed. Bottom of temp gauge to centre = 20c to approx 95c, centre to top = 95c to 105c approx, so they may not run when the guage is in the red, if you follow what I mean.
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TilleyBoy
Newbie
1998 cosworth scorpio ,
Posts: 27
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Re: Help please -coolant fans
« Reply #2 on: Oct 5th, 2014, 12:13am » |
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Thanks will give it a try
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Andycan
Full Member
I'm a YaBB newbie!
Posts: 565
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Re: Help please -coolant fans
« Reply #3 on: Oct 5th, 2014, 3:00pm » |
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Did you replace the fan temp sensor or the gauge temp sensor?
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TilleyBoy
Newbie
1998 cosworth scorpio ,
Posts: 27
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Re: Help please -coolant fans
« Reply #4 on: Oct 5th, 2014, 9:14pm » |
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Well I hope it's the fan temp sensor !!! The one at the front of the engine with a 27mm deep socket !! Grey colour top with black over connector .
Am I right ?
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Nunnspoet
Full Member
I love YaBB 1G - SP1!
Posts: 798
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Re: Help please -coolant fans
« Reply #5 on: Oct 6th, 2014, 8:41am » |
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Hello there and welcome.
Have you driven your Scorp anywhere? I know from experience that the Scorpios do not like being left idle for any period of time let alone years  . I suggest you drive her for a few days keeping a eye on things and each time you go for a drive switch EVERYTHING on and off, and try out the ABS. They love being driven - don't forget to open and close all doors as well.
Best of luck to you
Mike
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TilleyBoy
Newbie
1998 cosworth scorpio ,
Posts: 27
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Re: Help please -coolant fans
« Reply #6 on: Oct 6th, 2014, 8:19pm » |
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Not really mate but we have run it up driven it up and down the road , just when aircon was on and it got to temperature the o/d fault light comes on so we warmed up to red and the fans didn't come on which is why I'm trying to cure that issue first to see if we still get o/d light. Apart from that everything else works how it should . My Gramp when he was alive looked after it and only done 57k miles .
It has been kept in a garage when not in use whilst he had it for the last ten years so generally it's all very good. Couple of minor usage scratches and some rust on the rear arches.
Want the faults clear to get it through the mot so I can bring it home and tidy the little bits to bring it back to mint.
Love that scorpio
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TilleyBoy
Newbie
1998 cosworth scorpio ,
Posts: 27
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Re: Help please -coolant fans
« Reply #7 on: Oct 6th, 2014, 8:21pm » |
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Jesus bad manners , hello mike and thanks for the welcome.
Sorry about the loooong sentences typed on my phone lol
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TilleyBoy
Newbie
1998 cosworth scorpio ,
Posts: 27
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Re: Help please -coolant fans
« Reply #10 on: Oct 7th, 2014, 8:26pm » |
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Thanks I checked all fuses today and the relay multiplug looks good , hopefully connect the laptop next week for error codes and try bridging the relay , the hunt continues !!
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Nunnspoet
Full Member
I love YaBB 1G - SP1!
Posts: 798
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Re: Help please -coolant fans
« Reply #11 on: Oct 10th, 2014, 7:59am » |
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 . No offence taken at all. Never entered my mind.
Happy Scorpying.
Mike
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TilleyBoy
Newbie
1998 cosworth scorpio ,
Posts: 27
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Re: Help please -coolant fans
« Reply #12 on: Nov 3rd, 2014, 7:19pm » |
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Well we finally got a lead to connect and use forscan, the main fault is the IAT sensor which I have ordered to replace next week.
Fans spooled up during diagnostics no problem .
Hopefully this will help cure the problem so will let you all know when the new one goes in
Cheers
Stew
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TilleyBoy
Newbie
1998 cosworth scorpio ,
Posts: 27
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Re: Help please -coolant fans
« Reply #13 on: Jan 6th, 2017, 10:13pm » |
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Well after on and off working on the Scorp for 2 years we have discovered the loom is screwed with crumbling insulation right back to the gearbox .
The old loom is with an auto electrician awaiting a quote to refurb it so will let you all know the costs when I know
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Glyn
Full Member
Now an OAP ! 95 cossie and another !and a 12v
Posts: 584
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Re: Help please -coolant fans
« Reply #14 on: Jan 7th, 2017, 12:37am » |
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You will find a lot on this website about the looms on the Cosworth. New ones not available anymore and your best bet is your auto electrician using the old connectors as some of those are not available.
Good luck with it and let us know how you get on. It's worth it in the long run.
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Glyn
Full Member
Now an OAP ! 95 cossie and another !and a 12v
Posts: 584
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Re: Help please -coolant fans
« Reply #15 on: Jan 7th, 2017, 12:41am » |
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ps see the next topic"Motor Wiring Looms"- same problem.
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a900one
Full Member
A scorpio is for life not just for christmas
Posts: 980
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Re: Help please -coolant fans
« Reply #16 on: Jan 7th, 2017, 10:35am » |
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My 98 cosworth has got some cracking and insulation loss, so I think that the wiring on all scorps is poor, not just the early ones.
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TilleyBoy
Newbie
1998 cosworth scorpio ,
Posts: 27
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Re: Help please -coolant fans
« Reply #17 on: Jan 19th, 2017, 11:30pm » |
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£800 to cut and solder in new wires !! No thanks , the little time I now have will be spent cut and soldering wires lol !
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TilleyBoy
Newbie
1998 cosworth scorpio ,
Posts: 27
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Re: Help please -coolant fans
« Reply #18 on: Jun 29th, 2017, 10:08pm » |
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Well the fan saga finally over !! 3 full days cutting and soldering wires to rebuild loom , finally got it fully in and rebuilt back up !! Hey presto all faults cleared abs engine started as soon as I touched the key !! Fans cycle in and out as they should and running sweet !
Mot on Monday , minor welding on cill. Now onto phase 2 clear the three leaks!! Love this car
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PJDavis
Senior Member
2 x 1995 Jag X300 3.2 / 4.0 (Henley) 1957 XK140
Posts: 1474
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Re: Help please -coolant fans
« Reply #19 on: Jun 29th, 2017, 10:45pm » |
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You've done very well to do the wiring problem. I've been there and taken many hours to completely replace the looms that are a problem. Well-done, no small job.
Peter
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I love 'Movvy'
1995 Jaguar XJ6 X300 3.2 (Henley)
1995 Jaguar XJ6 X330 4.0 (Dopey)
1957 Jaguar XK140 USA (converted to RHD, and to have fitted Mk10 420G Engine with BW 65 Auto Trans)
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