Damaged Rectifier?

[fgbutler]

Got a 71 Merc 800. Been running poor, kicks in sometimes. Tested the rectifier; one of the leads from the stator had good continuity, the other had very high resistence. Should the engine be able to run at all in this senerio?

 

[mellowyellow]

Re: Damaged Rectifier?

all rectifier does is convert ac to dc.<br />one side charges battery, other sends<br />signal to tach.

 

[CARLOS]

Re: Damaged Rectifier?

MELLOWYELLOW:<br /><br />I HAVE AN 3.4L MARINER 1990.THIS ENGINE HAS ONLY ONE TYPE OF RECTIFIER/REGULATOR ALL IN ONE MODULE.<br /><br />1- HOW CAN I PROTECT THE VOLT. REGULATOR FROM BRAKE OUT? SOME FRIEND TOLD ME THAT IF I REMOVE THE BATTERY TERMINAL WHILE THE ENGINE IS RUNNING, THE REGULATOR MAY HURT.<br />2- IF THE TACHOMETER DOESN´T WORK MEANS THAT THE REGULATOR IS NOT CHARGING THE BATTERY PROPERLY? (I´M SURE THAT TACHOMETER IS IN GOOD CONDITIONS)<br />3- WEAK BATTERY MAY HURT THE VOLT. REGULATOR? (SO, I MUST TO CHARGE BATTERY SEPARATELY WITH BATTERY CHARGER?)<br /><br />THANKS FOR YOUR ATTENTION<br /><br />CARLOS SCHEMEL<br />VENEZUELA

 

[mellowyellow]

Re: Damaged Rectifier?

your friend is right Senor.... good thing they<br />only cost $35. <br />BTW, I know this to be true for the 70's motor<br />posted here, but 1990 prob. has a lot more<br />electrical "boards" that can fry at same time.<br />keep this in mind.<br />weak volt doesn't hurt battery, it drains it.<br />a good rectifier will charge it automatically.<br />good luck,<br />M.Y.