1998 Mercury 150 alarm, oil pump?

[ntarver0568]

The alarm stops when I disconnect the oil pump sensor, so I changed the sensor first. The alarm is still going off. I just want to make sure that the only other thing it could be is the pump before I spend more money on that. Thanks in advance for the help.

 

[jerry jr]

Re: 1998 Mercury 150 alarm, oil pump?

Hi try checking the float in the oil resolver the foam float sticks some times make sure it has oil all the way to the top this is if your motor is oil injected

 

[ntarver0568]

Re: 1998 Mercury 150 alarm, oil pump?

Thanks, but I have already changed the float and alarm module before getting to this point. I should have mentioned that earlier.

 

[CharlieB]

Re: 1998 Mercury 150 alarm, oil pump?

The alarm module compares the pulses of the pump rotation sensor to ignition impulses from one coil, alarms when there is a difference.

You need to check for pump rotation, check for a low voltage pulse produced by the rotation sensor, and check for any misfiring of the ignition.

The troubleshooting section of the factory service manual spells out each test.

Check these links to see if your manual is available for download.

http://forums.iboats.com/showthread.php?t=309079&p=2072211#post2072211

http://1manual.com/Mercury manuals/Service_Manual_Index.html

 

[ntarver0568]

Re: 1998 Mercury 150 alarm, oil pump?

Thanks for the help. I went to go check on that and now the alarm isn't beeping the 2 or 3 normal beeps when you turn the key to the on position. Any suggestions on that?