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| BONLY1
Test Rider
 | | Joined: 06 Oct 2005 | | Posts: 303 | | Location: Ormskirk Lancashire |
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 Posted: Mon Nov 11, 2019 8:11 pm Post subject: TEMPERATURE |
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Can twirl me spanners and did alright rebuilding the carbs, but am stuck now.
Why doesn't my temperature guage rise, stays at very bottom.
Thermostat or sensor?
The bottom sensor of two on my '94 Foxeye RU is connected okay 'cos when I connect and disconnect, I notice a little 'flutter' at the bottom on the gauge, so it's getting power at the gauge.
I'm guessing thermostat stuck open?
What does the bigger top sensor do?
In fact, why two?
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IF IT AIN'T BROKE - FIX IT 'TILL IT IS. |
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| Fatdog
Test Rider
 | | Joined: 12 Jun 2013 | | Posts: 295 | | Location: East Yorkshire |
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| Posted: Tue Nov 12, 2019 1:01 pm Post subject: |
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Bigger sensor controls when the fans kick in.
Smaller one is for the temperature gauge.
Has it suddenly stopped working or just after working on the bike?
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1993 YZF750R
EXUP - Knee Down |
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| BONLY1
Test Rider
| | Joined: 06 Oct 2005 | | Posts: 303 | | Location: Ormskirk Lancashire |
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| Posted: Tue Nov 12, 2019 2:54 pm Post subject: |
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Thanks Fatdog.
Bike was off road for some years, 'till last year or so.
Hardly ridden since, only very short journeys (MOT and back) and to be truthful gauge has hardly ever moved from its lowest position,
although I can see it moves (barely) 'specially when I remove and refit wire at the lower sensor.
If I'm going to use it more, need to sort soon. (well, over winter anyways) 
Can't say I've ever heard fan cut in either, while my FZS1000 fan is on and off loads within minutes of starting.
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IF IT AIN'T BROKE - FIX IT 'TILL IT IS. |
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| Teego
More Rabbit Than Sainsbury's
 | | Joined: 14 Mar 2006 | | Posts: 2416 | | Location: On the road again. Distance is the drug. |
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| Posted: Tue Nov 12, 2019 5:31 pm Post subject: |
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Start the bike. Go and make a pot of tea. Drink tea. Go and check temp. Drink more tea. Go and check temp. Drink more tea. Go and check fan. If no fan - kick the bike.
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| YAMAEXUP
Commentary Team
 | | Joined: 09 Dec 2009 | | Posts: 923 | | Location: NW Kent |
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| Posted: Sat Nov 16, 2019 12:37 pm Post subject: |
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I had a similar problem not so long ago. As I said in my other post, i'd had a problem on a car I owned many years ago where the thermostat was opening slightly as soon as the water warmed up, shoving it through the rad. On my car I replaced the thermostsat & was good.
On my Exup I looked up how much a new thermostsat was & was astonished to see a new one was £40 or so. Instead, I found one in a housing on that well known selling website & got it for £17. Once I had the item I drained the coolant & removed the thermostat. On first inspection there was a small piece of debris stuck in the valve seat, so I cleaned it up & dangled both in a saucepan of water & slowly brought it to the boil. Both worked perfectly.
Having put everything back together again it runs as it should.
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Bikes-they're in the blood.
www.blood.co.uk |
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| nuggitt
Moderator
 | | Joined: 22 May 2009 | | Posts: 5601 | | Location: North Yorkshire |
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| Posted: Sun Nov 17, 2019 9:32 am Post subject: |
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If you ever want to replace your coolant sensor then get one of these. I bought one of these a while back from China. Old school gave me the heads up on it and I was the Guinea pig in doing the testing work. Looking back in my records I fitted it in June 2018 and it worked fine then and it still is today.
When I bought the sender unit the price back then was about £9 and I made the seller an offer of £8 and it was accepted, it took about ten days to arrive in the post. I did cut off the plastic prong part because that wasn't needed.
SENDER UNIT
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Bit of advice. Buy a good bed and a good pair of shoes, because if you aren't in one you'll be in the other. |
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| BONLY1
Test Rider
| | Joined: 06 Oct 2005 | | Posts: 303 | | Location: Ormskirk Lancashire |
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| Posted: Wed Nov 20, 2019 8:27 pm Post subject: |
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Still drinking lots of tea - thanks Teego
Yamexup - looks like I'll be stripping out the 'stat then - thanks.
Ordered one of them Nuggit, £9.99 (my offer) was accepted and expected at end of month,
Thanks all.
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IF IT AIN'T BROKE - FIX IT 'TILL IT IS. |
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| oldskoolexup
Motormouth
 | | Joined: 19 Jul 2009 | | Posts: 1217 | | Location: THE place...some are born here, some drawn here...Manchester |
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| Posted: Sun Jan 12, 2020 10:12 am Post subject: |
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| nuggitt wrote: | If you ever want to replace your coolant sensor then get one of these. I bought one of these a while back from China. Old school gave me the heads up on it and I was the Guinea pig in doing the testing work. Looking back in my records I fitted it in June 2018 and it worked fine then and it still is today.
When I bought the sender unit the price back then was about £9 and I made the seller an offer of £8 and it was accepted, it took about ten days to arrive in the post. I did cut off the plastic prong part because that wasn't needed.
SENDER UNIT |
Hi Nuggitt.....pleased to hear the temp sensor is still working as it should......
Unsure if the query regarding low temp running is still an issue but....
the sensor controls the temperature at which the fan kicks in and there are other options available which may mean that the fan comes on at too low a temperature.
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Life begins at the end of your comfort zone,
Learn from the mistakes of others.............................
You can't live long enough to make them all yourself
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Carpe Diem - seize the moment. Don't dream... Do! |
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