CompuStar killed my Alternator?

Printed From: the12volt.com
Forum Name: Car Security and Convenience
Forum Discription: Car Alarms, Keyless Entries, Remote Starters, Immobilizer Bypasses, Sensors, Door Locks, Window Modules, Heated Mirrors, Heated Seats, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=53275
Printed Date: June 04, 2024 at 5:18 PM

Topic: CompuStar killed my Alternator?

Posted By: High4volts
Subject: CompuStar killed my Alternator?
Date Posted: April 05, 2005 at 12:47 AM

My alternator went out on my 2001 F150 Lariat. The Ford shop said "the Yellow and Black wire (alt. sense wire) connected to the alternator was preventing it from charging." This had been on my truck all winter and working fine until the alternator went out. has anyone had problems with this? The dealer said something about the "run sense" wire dropping the alternator wire voltage 1/2-volt. I know for a fact it's wired right so that is not the problem. My truck has 90k miles on it. Is this about the time it was going to go out anyway? Another thought i had was i have a high output amp that maybe this shortened the alternators life? Any idea's or thoughts? Is it better to use the alternator sense or plug coil sense?

Replies:

Posted By: Verto
Date Posted: April 05, 2005 at 8:34 AM

alternator going out at 90k miles? my truck has bout 140k on it and everything is still fine on it posted_image did u check the voltage coming from the alt? is it a 1 wire alt? it might require a ground... run sense wire may not be sending voltage to the computer?

Posted By: auex
Date Posted: April 05, 2005 at 4:56 PM

The dealership is full of sh*t.

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Certified Security Specialist
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Posted By: Velocity Motors
Date Posted: April 05, 2005 at 9:17 PM

auex]T wrote:

e dealership is full of sh*t.

I agree. Just like a dealership to pass the buck to the installer of a remote start. The YELLOW/BLACK wire is just an input wire and doesn't inhibit any electrical outputs that hte alternator has.

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Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA

Posted By: thepencil
Date Posted: April 05, 2005 at 9:52 PM

Sounds to me the only thing being charge here is you. Bring it somewhere else and get a second or third professional opinion. Not a bad idea bring it to a different dealership.

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Be careful whose advice you buy, but be patient with those who supply it. posted_image

Posted By: Captanham
Date Posted: April 06, 2005 at 12:47 AM

the only thing close to that i've EVER seen is on SOME fords there is a third ignition wire that hased to be hooked up or the alt wont give power to the batery (maybe a relay cut off or something?) i don't know how or why that would make your alt go bad, but check a few different sites for wireing diagrams, if you see any that say anything about additional ignition wires, try powering that up... maybe.. i still don't know how that would do anything to the alt, but whatever,

ps... dealerships pass the buck, like said up there, no one wants to have to do warentee work,, those a***oles

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Bad Boys Customs
audio - video - security

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