93 D250 charging system problem

[dodgeman999]

My 93 started not charging when you first start it up. {sometimes it would if you really reved it up} But now it won't even do that. I changed the cut out relay- {didn't help} I had a alternator rebuild shop take the alternator apart and check it-it was all good. I figured it must be the ECU since that's where the voltage regulator is. {Am I right?} I tried to get a used one on line -they said they needed the part number of the old one- the tag is so old, I can only read about 4 numbers. Is there anybody out there that can help me with a part number or a suggestion?

Thanks.

 

[DValentine]

Is your crank sensor set at about . 050"? The ECU get its signal that the engine is running and excites the alternator. Or so I remember. I would imagine the guys will correct me if I am wrong. Welcome to the site.
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Dave

 

[JGrefenstette]

this is a fairly comon issue. i repalced my alt. 3 times before i was dumb enough to realize it was my ECM the whole time! :-laf. we discuesed this in another thread, there i gave a link to site i got mine and the pricing info. im going to go find it then give you the info. give me a minute... ...

 

[Paychk]

Is your crank sensor set at about . 050"? The ECU get its signal that the engine is running and excites the alternator. Or so I remember. I would imagine the guys will correct me if I am wrong. Welcome to the site.

Fill out your signature so we know about your truck.



Dave

Correct! also check the wire harness at the front of the motor and the disconnect that is there.

 

[JGrefenstette]

Wholesalemopar - Genuine OEM Parts for Dodge, Chrysler, Jeep & Plymouth



heres the breakdown of the cost: $24. 30 for shipping... absurd?? Yes, but its worth it due to the good deal. $227. 50 before the core. Comes down to a total of $251. 80. when you send in your old PCM theyll refund you account $125. So after its all said and done, youre only spending $126. 80. not a bad deal i my opinion. ive had mine in for almost a year and who knows how many miles. no issues. hope this helps.

 

[dodgeman999]

Thanks Guys, I'll check out the crank sensor first and the connector.