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 SERVICE and oil light came on simultaneously

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Eldo850
Montanarolo
Montanarolo
Eldo850


Posts : 14
Join date : 2020-01-28

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PostSubject: SERVICE and oil light came on simultaneously    SERVICE and oil light came on simultaneously  Icon_minitime1Wed Oct 06, 2021 6:10 am

Hi brains trust. Greetings from Tasmania.

So the “spanner” has been on the dash forever, the other day SERVICE and the oil light came on simultaneously. Coincidence or sequence? Bike has done 62km, 1200km since new oil, good level , no leaks or top ups between service. My addled brains thinks this has happened before and then went away. What say you .?

How do I get rid of the “spanner”  . Thanks in advance, cheers pete.
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Oz1200Guzzi
Don Abbondio
Don Abbondio
Oz1200Guzzi


Posts : 5623
Join date : 2014-03-13
Age : 67

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PostSubject: Re: SERVICE and oil light came on simultaneously    SERVICE and oil light came on simultaneously  Icon_minitime1Wed Oct 06, 2021 6:35 am

Pete, does this have the upper sump plate, between the sump and block? If so, it is probably the upper gasket. I really dunno of the 850 though. Pete Roper should be along shortly.

If it's the gasket, $25 for a pair of gaskets and 30 minutes should get it right.

Spanner can be gotten rid off by going into the dash settings - 12425 (like at the top of this page) is the code to get you into where these things are.

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Pete Roper
GRiSO Capo
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Pete Roper


Posts : 8584
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Age : 64

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PostSubject: Re: SERVICE and oil light came on simultaneously    SERVICE and oil light came on simultaneously  Icon_minitime1Wed Oct 06, 2021 7:51 am

OK. First thing. Do NOT start or ride the bike again until you get to the bottom of the issue. If the oil light has come on along with a service warning this is usually an indicator of catastrophic lubrication failure. Dodgy oil pressure switches do not usually trigger the light, just a memorised code in the dash.

The way to approach this is methodically and I'll start walking you through that tomorrow but the quantity of oil, the 'Level' is utterly irrelevant so discard that as a source of the problem instantly.

Gotta go to sleep now. DO NOT. Start or ride the bike.

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Eldo850
Montanarolo
Montanarolo
Eldo850


Posts : 14
Join date : 2020-01-28

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PostSubject: Re: SERVICE and oil light came on simultaneously    SERVICE and oil light came on simultaneously  Icon_minitime1Wed Oct 06, 2021 11:31 pm

Thanks mate, sleep well.
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Pete Roper
GRiSO Capo
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Pete Roper


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PostSubject: Re: SERVICE and oil light came on simultaneously    SERVICE and oil light came on simultaneously  Icon_minitime1Thu Oct 07, 2021 12:49 am

Right.coming back to this one.

Firstly, because it's easy, swap out the oil pressure sender switch. Go down to your local 'Wattalottacrap Auto' place and get a Tridon TPS 029 oil pressure sender. It has a bigger hex than the Guzzi switch but it fits, is readily available and is very cheap. If that cures it all well and good but in this circumstance I fear it won't.

The 2V bikes do have the sump spacer and gasket Tony mentions but on the earlier bikes they don't tend to give problems. If though the switch doesn't fix it then it's worth checking and replacing the spacer gasket 'Just because'.

The other thing that it could be that really gets my alarm bells ringing is the possibility of the oil pump rotor having broken up. Now this being a possibility will depend on what model oil pump it has and I don't know if the 850's went to the Gerotor type pump on later models or if they stuck with the spur gear pump? Anyway the best way to find out is to open the timing chest, pull off the camchain and sprockets, take the pump off and look.

If you flick me your vin and engine number I may be able to find out what pump you have.

Try the switch first though. My paranoia may be unfounded.

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Pawel Spoon
Carlotto
Carlotto
Pawel Spoon


Posts : 25
Join date : 2021-08-06

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PostSubject: Re: SERVICE and oil light came on simultaneously    SERVICE and oil light came on simultaneously  Icon_minitime1Thu Oct 07, 2021 1:14 am

Hi Pete,

sure it isnt a 039 ?
saw something in that post: [You must be registered and logged in to see this link.]

Pawel

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Pete Roper
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Pete Roper


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PostSubject: Re: SERVICE and oil light came on simultaneously    SERVICE and oil light came on simultaneously  Icon_minitime1Thu Oct 07, 2021 1:57 am

I'm going from memory, I might have one handy. Let me have a scrabble about...

Yup, you're right 039. Mea culpa.

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Eldo850
Montanarolo
Montanarolo
Eldo850


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PostSubject: Re: SERVICE and oil light came on simultaneously    SERVICE and oil light came on simultaneously  Icon_minitime1Fri Oct 08, 2021 2:34 am

Thanks all , for what it’s worth, this didn’t happen while I was riding , only after it sat for 6 weeks so hoping the pump didn’t self destruct on starting. Would I have heard anything? Anyway off to get an oil pressure switch tomorrow and work from there. I’ll let you know how I get on. Thanks again, pete
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Pete Roper
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Pete Roper


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PostSubject: Re: SERVICE and oil light came on simultaneously    SERVICE and oil light came on simultaneously  Icon_minitime1Fri Oct 08, 2021 3:12 am

Unlikely for the pump to suddenly go tits up while sitting. It wouldn't be likely to make an audiable noise if it did. It's sounding as though it is likely the switch, I'm just surprised by the light. Usually they just throw an error code.

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Bill Hagan
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Bill Hagan


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PostSubject: Re: SERVICE and oil light came on simultaneously    SERVICE and oil light came on simultaneously  Icon_minitime1Fri Oct 08, 2021 6:15 am


When my '07 Norge's oil pump failed -- lobes fractured -- the "Aladdin's Lamp" symbol came on. affraid

If you are not seeing that -- assuming such is also a feature of GRiSO's Shocked -- suspect it's "only" the switch.

Bill

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Eldo850
Montanarolo
Montanarolo
Eldo850


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Join date : 2020-01-28

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PostSubject: Re: SERVICE and oil light came on simultaneously    SERVICE and oil light came on simultaneously  Icon_minitime1Thu Oct 28, 2021 3:20 am

So, the problem was the oil pressure switch. To my relief. While the tank was off, replaced various hoses, cleaned connections. SERVICE and red light gone. Thanks Pete and the rest

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Pete Roper
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Pete Roper


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PostSubject: Re: SERVICE and oil light came on simultaneously    SERVICE and oil light came on simultaneously  Icon_minitime1Thu Oct 28, 2021 3:42 am

Clear the fault from the dash to avoid confusion in the future. Good news!

cheers

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