90 hp evinrude vro problem ?

[mcafa]

I have a 1987 90 hp v4 evinrude. while out on the h20 my overheat alarm went off. the shop replaced both thermo's, the alarm in the remote contrl. (because it was not sounding loud enough) and checked the water pump. they water tested the motor and the overheat alarm did not come on. BUT when they tested the wiring by grounding it to the block, rapid beep's were heard and would only go away when the VRO wiring was disconnected. t<br />hey replaced the pump w/a used VRO claiming the wiring was bad in the old one. My first time out the no oil flow alarm sounded. when it sounded i primed the oil res. ball and the alarm shut off. this happened several times within an hour of running the motor between idle and 8 mph. the pressure and vacumm tested ok on the pump. the tech says the wiring is faulty and that the motor is getting oil even when the alarm goes off because the vro test ok... ANY INFO WOULD HELP GREATLY

 

[clanton]

Re: 90 hp evinrude vro problem ?

What happens when you disconnect the vro harness, remote oil tank and ground the temp sensor? Check blocker diode in engine harness. New horn could be bad.

 

[mcafa]

Re: 90 hp evinrude vro problem ?

THANK YOU FOR THE REPLY,<br /><br /> I'LL HAVE TOO TRY THE TEST, BUT I DO NO THE DIODE IS MISSING BECAUSE THE TECH FIRST TRIED TO REPLACE IT BUT NEVER FOUND ONE IN THE HARNESS. HOW WILL I KNOW IFF THE ALRM IS BAD. IT SOUNDS OK ?

 

[mcafa]

Re: 90 hp evinrude vro problem ?

ALSO, WHAT IS THE PROPER WAY TO DISCONNECT THE VRO ? CAN I UNPLUG IT FROM THE OIL RES AND CAP IT THERE OR DOES IT HAVE TO BE AT THE PUMP ITSELF ?? THANK YOU !!!!!!!!!

 

[Bear]

Re: 90 hp evinrude vro problem ?

"I'LL HAVE TOO TRY THE TEST, BUT I DO NO THE DIODE IS MISSING BECAUSE THE TECH FIRST TRIED TO REPLACE IT BUT NEVER FOUND ONE IN THE HARNESS."<br /><br />Try this: <br /> http://marinemechanic.com/new-images/j_ediode.html <br /><br />I hope that helps.