Voltage drops and sticks

[joom 10+ year member]

Funny when I researched ho alts. Mechmans recommendation was to cover the sensor to ensure full voltage output. I can go out to my 13 truck right now cover the sensor an voltage will go from 12.5-over 14. But my truck is probally just special I guess.

 

[bigfluke 773]

It could be your pcm. I don't if you have one but if you do you will need a sensor to bypass it.

 

[noble brown]

Yeah I do have a PCM. @joom where is your sensor at? I just want an idea of what I'm looking for. I'll just cover it up and I guess we will find out then huh?

 

[noble brown]

@bigfluke 773, can I just jump out the sensor? I guess my lights would be on all the though huh?

 

[los33 10+ year member]

[quote name='bigfluke 773']It could be your pcm. I don't if you have one but if you do you will need a sensor to bypass it.[/QUOTE]

[quote name='noble brown']@bigfluke 773, can I just jump out the sensor? I guess my lights would be on all the though huh?[/QUOTE]
Google auto headlight bypass.

Using a 1.5k resistor between the bcm and the ambient sensor.

This will force you to use the manual light switch.
Your running lights will stay on till you turn the headlights on.

The BCM is under your steering wheel or under the truck.

Sent from my Z970 using Tapatalk

 

[bmk6795 10+ year member]

[quote name='noble brown']@bigfluke 773, can I just jump out the sensor? I guess my lights would be on all the though huh?[/QUOTE]

Search Google for a bypass. I'm sure there's one out there. There's quite a few for hondas. if you run your headlights 24/7 means more voltage drop. Not sure what you're running though.

 

[bigfluke 773]

You're pretty limited with a stock alternator. When you were banging did your voltage climb? If it got worse, you got other problems. You could try tricking the pcm by turning on the heat or A/C but that only worked on HO alts. It never really did anything on a factory.