Charging problem, I think???
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Postmaster
Joined: Nov 2003
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From: Middleton, ID
Charging problem, I think???
I need help, my 93' f-150 is acting up as of lately, every time I pull up to an intersection, or stop for that matter, the truck falls flat on its face, the engine surges and the voltage gauge peaks in the wrong direction, you know,
8 NORMAL 18 it usually sits on the L but in the last two or three days its moving towards the A, and today, its on the A about to the M.
Is this alternater or is it voltage regulator, or something completly different???
Thanks
Eric.
8 NORMAL 18 it usually sits on the L but in the last two or three days its moving towards the A, and today, its on the A about to the M.
Is this alternater or is it voltage regulator, or something completly different???
Thanks
Eric.
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From: Virginia
You have to decide what is happening first. Is the engine having trouble, which causes the alt rpm to drop and then the voltage to drop, or is the alt failing causing the engine to falter. I would lean toward the engine causing the problem unless you have noticed something else happening to consider the alt system being the culprit
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Postmaster
Joined: Nov 2003
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From: Middleton, ID
it's the engine, it'll drop revs drasticly and as soon as it starts it'll send the gauge bouncing from side to side, and I'm not making it sound bigger than it is it literally bounces the needle from 18 to 8 back to 18.
Also, I went for a drive right after I posted and the needle is now to the M of NORMAL.
if you use the power windows or locks it'll bobble the needle along with dimming everthing involved with the truck, i.e. head/tail lights, radio, dash, blower motor, etc.
Anyway, what would the engine be doing to cause this??? I'm stumpped, because I've never had this problem with any other vehicle.
Also, I went for a drive right after I posted and the needle is now to the M of NORMAL.
if you use the power windows or locks it'll bobble the needle along with dimming everthing involved with the truck, i.e. head/tail lights, radio, dash, blower motor, etc.
Anyway, what would the engine be doing to cause this??? I'm stumpped, because I've never had this problem with any other vehicle.
Postmaster
Joined: Apr 2000
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From: SD
Use a voltmeter on the battery posts. You should get 12.5 volts with engine off and 13-14.5 volts with engine running. Let us know what you find.
I'm not sure, but I think your alt has a internal voltage regulator, so replacing the alt replaces both.
Marty
I'm not sure, but I think your alt has a internal voltage regulator, so replacing the alt replaces both.
Marty
Junior User
Joined: Oct 2003
Posts: 89
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From: Central New York
Just had a similar problem...my needle was "bouncing" also. When it bounced...my headlights would flicker and blower surged up and down....It was the regulator...went to the boneyard, grabed a decent altenator.......problem fixed.
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From: Virginia
if you use the power windows or locks it'll bobble the needle along with dimming everthing involved with the truck, i.e. head/tail lights, radio, dash, blower motor, etc.
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