Stevo7

Ok heres the problem the truck won't charge. I have re set the crank sensor at 50 thousandths re placed the alternator. And I have been getting a run around if it has a voltage regulator if it does then I will replace it it is a 93 3/4 ton LE diesel 5.9 if any answers it would help me out a lot

carrnutt

The Voltage is regulated by the computer. Could be a bad ASD Relay, there are a couple relays on the fender, swap the front (ASD) and rear (A/C) relays.

There is more info in the sticky.
https://www.dieseltruckresource.com/...82&postcount=7

Here is a work around if the PCM isn't doing it's job.
http://www.cumminsforum.com/forum/89...w-89-02-a.html

Onemoparnut

Fill out your signature so we know what you have.

carrnutt

But he does state it's a 93 250

Onemoparnut

Still will help us later to help him better if he fills it out.

wannadiesel

As was said, try swapping relays. Does the A/C, OD, and cruise work, if equipped? If all that stuff is out you still have crank sensor issues and you need to look over the worrying very closely, especially at the front of the head. You can also sneak the sensor gap a little tighter.

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Stevo7

No the a/c doesn't work nor does the cruise control and I have found the two relays and thought those my have something to do with it

Crossy's son

is it an automatic? Does the overdrive work?

bryson711

My bets the crank sensor is bad if your ac, and overdrive don't work, that is a really common sign that its your crank sensor, also make sure you check your asd relay, it cheap and alot of the time that's the problem

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Stevo7

No it's a 5 speed and when I get off work I will mess with the asd relay but if I have to I will get a crank sensor but I don't want to be a drug store mechanic and just start buying parts I would like to narrow this wiring night mare down and fix it

bryson711

You can switch the starter relay and asd relay on the left fender they are the same, that will tell you if its the asd relay or not, that's what was wrong with mine

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Stevo7

Ok cool I will switch them out and see what it does d

bryson711

If that's it the relay is about 10 bucks from car quest

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Stevo7

Ok well I will update you guys on it