Oil tank sensor plug and harness on my engine not matching up(pic)

livewirei

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Mar 21, 2014
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i have a 1991 evinrude 70hp vro2....the alarm is going off whenever the key is in start, constant tone, my oil tank sensor is unplugged and the harness doesnt match, could i just splice the wires in? wiring harness on engine engine oil.JPG harness on tank tank oil fitting.JPG
 

seahorse5

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Re: Oil tank sensor plug and harness on my engine not matching up(pic)

Your oil tank and connector is for a 1996 and later engine that comes with the SystemCheck warning system.

The connector you show from the engine is not for the oil tank
 

livewirei

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Re: Oil tank sensor plug and harness on my engine not matching up(pic)

ok, so would my 1991 not have a tank sensor at all?..there is no other empty plugs on the engine and no lose wires connected to the vro.
the lose plug pictured wires go behind the fuel filter and i lose it with a bunch of other wires...any idea what its for?

thanks
 

livewirei

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Re: Oil tank sensor plug and harness on my engine not matching up(pic)

and the oil tank has 2 oil lines, one hooked up with a ball, and one capped, is this because its from a 1996? and will it cause any problems?tank.JPG
 

racerone

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Re: Oil tank sensor plug and harness on my engine not matching up(pic)

I think you need to verify that oil injection is in service and working properly before roaring away from the dock.----Is this a new to you boat / motor ?-------The tell tale for cooling system does it come off the top of the block ?---Model # of your motor is ??
 

livewirei

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Re: Oil tank sensor plug and harness on my engine not matching up(pic)

model is VE70TLEIE, its getting oil, i was trying to start it with the cold start injector off and flooded the carb bad with oil, yes i just bought it, thought i was getting a good deal and didnt look things over well enough... but atleast im learning alot
 

WernerF

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Re: Oil tank sensor plug and harness on my engine not matching up(pic)

You just bought the motor and have at least two independent issues with it. More will come. If you want to keep the motor, you should get a factory service manual.
The oil tank sensor is connected to your engine with two leads. One is ground, a nut on the exhaust cover plate. The second is a bullet connector with a tan wire on it near the VRO pump. But I don't know if the 1996 sensor can simply be connected to both.
 

175se

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Re: Oil tank sensor plug and harness on my engine not matching up(pic)

when you say alarm on constant with key in start do you mean key on(2 diff positions) if constant with key on check by unplugging tan wire near top of cyl head, that's temp sensor if you unplug it and stops going off you've located one problem.
 

livewirei

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Re: Oil tank sensor plug and harness on my engine not matching up(pic)

alarm goes off when the key is turn to start or run instantly, cold engine, i will unplyg the tan connection today and try...also the plug i thought was the engine side oil tank sensor only has 2 wires going to the 5 pin connector, could it be that somsone put an aftermarket one on?
and yes im ordering a manual, definatly over my head here, i appritiate all the help
 

daselbee

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Re: Oil tank sensor plug and harness on my engine not matching up(pic)

You have made some errors in you assumptions on what things are.
Slow down, read on here, and get some of the basics first.

Now, the four pin half round connector is the engine harness side of the VRO fuel pump. If that is disconnected, it usually means that someone has disabled the oil mixing function of the pump, and is mixing the oil and gas manually. That's what it USUALLY means.
It could be that someone unplugged the harness to shut that alarm off. UNplugging that harness disables the alarm system from detecting a NO OIL condition. You will see a tan/(stripe color?) which is the NO OIL sensor line.

At any rate, you should immediately begin mixing your gas with TCW-3 oil at a 50:1 ratio. Do that until you prove oit the oiling function of the VRO pump. Plenty of posts on here about how to test that.

Regarding the alarm system, disconnecting the tan sensor wires throughout the engine will not cause the alarm to sound. Disconnecting those wires disables the function and will never cause the alarm. If you have a constant alarm, one of the tan sensor wires is shorted to ground, either by wiring fault, or a bad sensor itself. Disconnect one at a time to find the bad line.
Other possibility is that the horn itself is bad. They fail in the ON state too.

Your factory service manual will show all the sensor wires, colors, etc. Tan or a combination of tan with a stripe are the sensor wires.

Now, the oil tank. That tank is a tank from a Ficht direct injection engine. They use an oil return line, which is that line that has the yellow stripe in it. It will work fine for you, just plug off the return.

Now post #6 you say "cold start injector"......nope. It is a primer solenoid. It is simply an electrically controlled valve that allows fuel to be supplied to the engine for cold start. The fuel shoots into the intake directly right behind the carbs. Function is equivalent to an old choke. The red lever must be aligned with the black solenoid body, the end pointing to the opposite end of the black solenoid body, for normal operation. That lever will NOT flood the carbs with oil. If you have nothing but oil in the carbs, look to the fuel pump not delivering gasoline to mi9x with the oil it is pumping.

You have alot of work to do. Don't run it without 50:1 in the tank!!!!
 

daselbee

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Re: Oil tank sensor plug and harness on my engine not matching up(pic)

Error in above post....possibly....I am not understanding that FIVE pin half round connector. Can you post the wire colors in that one? Probably not VRO connector. Need to see wire colors.
 

livewirei

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Re: Oil tank sensor plug and harness on my engine not matching up(pic)

I will check on the wires going into the engine side connection tonight and try unplugging the tan wire, ive ordered a manual for this and will start mixing gas....thanks alot for taking the time to type all that out saelbee, its a big help, i definatly got some work to do now
 

emdsapmgr

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Re: Oil tank sensor plug and harness on my engine not matching up(pic)

I have a 92 70 hp VRO model. Somehow, the prior owner has obtained the wrong model year oil tank. While the tank functions properly and is wired to the engine, the warning horn does not function as it should. Once my tank gets low on oil it does not signal an intermittent beep. I get a constant horn (similar to an overheat.) When the tank is low on oil. Once refilled, the horn silences.
 
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boobie

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Re: Oil tank sensor plug and harness on my engine not matching up(pic)

Emds, you're better off with that tank. The ones that had the electronics in them had too many problems. I think that old one is NLA.
 
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emdsapmgr

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Re: Oil tank sensor plug and harness on my engine not matching up(pic)

That explains how I wound up with this one! Guess that's a good thing. Thanks!
 
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