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► Modify message ( Re: oil and temp warning lights on together and don't go out when engine runs )

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I haven't checked the book yet either, but I read somewhere at some point that the 2 sensors share a circuit, so that if the oil light comes on, the temp light does too.  This seems odd to me, but possible; engineers do what they want to.  The explanation I saw was that if the OP goes low, they want both lights to get your attention.     I also read something else that said the 800 Vulcans are bad about getting an air pocket in the oil system if tipped over, or sometimes when the oil filter is changed.  This seems really peculiar to me - I rather tend to doubt it, but I have read it several places.  I learned a long time ago to say "that can't be right", because every once in a while I see something that doesn't seem like it can be right - but it is, LOL....  Anyway, what I read was that the oil filter needed to be burped, to get the air pocket out -- again this seems like an unlikely problem, but you might look into it.  I know it is quite common to have air pockets in cooling systems (many even have air bleeders to assist in the bleeding) but I've never (other than this) heard of an oil pump that was incapable of priming and "bleeding" itself.

But like Bucko said, better safe than sorry when it comes to OP.

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Posted by kw-retrorider

- January 17, 2017, 03:52:34 AM

Bucko - thanks for the input. This feels like something minor that just got out of place. Tracking down the sensors and their connections is a good start.

I will have to look at the wiring diagram to understand how the two warning lights relate to each other, if they do at all. Agree with you on how the sensors work...so don't expect that if I injured a sensor that it would "fail safe" and give you a warning light...but stranger things have happened.

Appreciate your thoughts.

Posted by Bucko

- January 16, 2017, 22:39:42 PM

Without reaching for the service manual....

I think both of the 'sender switches' provide a 'ground' to indicate a fault (in this case, either no oil pressure or high temperature). The first thing I would do is ensure the sender connections (wires) have not shorted to the motor or the frame (as a result of the fall over and pickup).

PS: I would not run the engine until you get the oil lamp problem sorted out first. It may be that you have no oil pressure.

Posted by CDNRatMan

- January 16, 2017, 20:36:59 PM

The wires under the left side cover are the same as in the headlight pod they are acc. wires.

I am just guessing at the oil level might need a burping, the rad I can see if an air bubble got moved around. But if we wait a bit and Troll comes on or someone smarter than us they will have the answer.

Posted by kw-retrorider

- January 16, 2017, 18:04:09 PM

Used my existing saddlebag brackets.....so OR_Seedman off the hook

I did not open the radiator to burp it...but can....but how does that relate to the lube oil system, which I can't imagine you can put a bubble in....

I did find a thread about those two warning lights not working...had something to do with the left side cover...I pulled that off, to find two wires not connected to anything and not able to be connected to each other...ie same type of terminals. So nothing out of place except two wires that can't be connected to anything or themselves.

Posted by CDNRatMan

- January 16, 2017, 17:16:56 PM

I realized it was bags nothing to do with the mounts.....perhaps he should buy new brackets from you.......

Posted by OR Seedman

- January 16, 2017, 17:09:33 PM

HEY!!??

Posted by CDNRatMan

- January 16, 2017, 15:32:26 PM

Going to have to do some reading on this for sure and get back to you.......

But after the hammering OR_Seedman gave me on another thread........did you buy the saddlebag mounts from him? If not then he is off the hook......

Did you check the rad levels or at least open it to "burp" it? Understanding the bike did not go over far but perhaps enough to create a bubble in both systems and you might need to "burp" them out.
Do not think we have a tip sensor on the 800.......

Posted by kw-retrorider

- January 16, 2017, 14:58:14 PM

Under the heading of the last thing you touched is the problem....I'm sure I had something to do with this, but don't know what. First:
- have never had either of these warning lights come on or stay on, much less together
- there is oil and coolant at the proper levels
- last time I rode the bike all was normal.
Now for the me part....
- Installed another set of saddlebags today
- while installing the left side bag, I had a block of wood under the kickstand, so the bike as level...so I could get the saddle bag where I wanted it
- while I was fooling with the left side saddlebag, the bike fell over on to its right side on the engine guard...not hard, just went over.
- picked it up; saw that some coolant had spilled...very little.
- went back and completed the saddlebag install.

Decided to go out for a ride. It started normally....I warmed it up...didn't notice both warning lights were on until I after pulled out and was riding a few minutes. Fan did not come on ever.
Drove the bike about two miles, thinking what are the chances both systems have a problem...must be an electrical gremlin. Then it stalled as I came to a light. It started back up and I got it back home without incident. The stalling is probably a red herring, but it made me get back home. It didn't stall again.

So temp and oil warning lights do not extinguish when engine starts. From what I can see, no fuses for these individually...so any thoughts from the group? Much appreciated.

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