87 3.0 starter solenoid question

[Kovacic]

In reading other posts about the difference between auto starter solenoids and marine I have determined that I indeed have the wrong solenoid on my starter. This means that I am not utilizing the extra voltage to the coil after running a while and it has left me stranded twice. I have found a new marine solenoid for the starter for $40.00. Is it wise to just change the solenoid or should I change the entire starter package? I don't have any other trouble with the starting of the boat otherwise. 1987 3.0

 

[Don S]

Re: 87 3.0 starter solenoid question

The entire starter needs to be marine certified. Not just the solenoid.

 

[DHPMARINE]

Re: 87 3.0 starter solenoid question

K not too sure about your starting problem,but this maybe related.<br /><br />Most OMC (cobras) have a circuit to supply 12v to the coil when cranking.Some Mercruisers also need this.<br /><br />The 12v comes from the "other" small terminal on the starter solenoid.<br /><br />We had a batch of "remanufactured" starters last year that did not put out 12v on that terminal.They were all hard starting.<br /><br />DHP<br /><br />*took a while to find this problem*<br /><br />also use marine because of the 'spark' factor

 

[waterone1@aol.com]

Re: 87 3.0 starter solenoid question

Kovacic, I think you may have this backwards. The full 12V is supplied directly(to the ignition coil) from the solenoid at start-up, not after a while. After you let go of the key, the voltage is supplied through the "on" terminal of the ignition switch through a dropping resistor (resistor wire). As the others have said, make sure you have a marine starter and solenoid.