Truck Lost Power and Stalled

Charging, starting, lighting, gauges, HVAC

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hdman90
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Truck Lost Power and Stalled

Post by hdman90 »

Last night my wife and I took the truckntona wedding. I noticed earlier in the day that the truck seemed to start somewhat hard (but wasn’t positive).
On the ride home, all was fine, until about 10 minutes from home, I noticed the lights starting to get dim, then the truck started missing... about 200 yards from home, I lost all power and th me truck slowly stalled out and gave out.
The ALT gague was reading normal, and the only changes I’d recently made were with the bottom two most fuses the day before (nothing that I think would effect the charging system).
Any ideas?
1969 F-100 LWB 2wd 240 3spd manual
1969 F-250 LWB 4wd 360 4spd manual
1976 F-250 Supercab LWB 2wd 390 4spd manual
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jzjames
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Re: Truck Lost Power and Stalled

Post by jzjames »

The alt guage would be suspicious to me. Or could the coil be shot?
How new is the alternator? I know there is a high failure rate for the alternators you get at Oreilleys, etc.
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Nitekruizer
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Re: Truck Lost Power and Stalled

Post by Nitekruizer »

Could be the voltage regulator too. Sometimes they die and the system overcharges. Sometimes they die and there's a no charge condition, eventually the battery goes dead and everything quits.
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Re: Truck Lost Power and Stalled

Post by DuckRyder »

Agree this sounds like a charging/battery issue.

First step - charge battery

Then: http://www.fordification.com/tech/charging.htm
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Re: Truck Lost Power and Stalled

Post by Thipdar »

hdman90 wrote:Last night my wife and I took the truckntona wedding. I noticed earlier in the day that the truck seemed to start somewhat hard (but wasn’t positive).
On the ride home, all was fine, until about 10 minutes from home, I noticed the lights starting to get dim, then the truck started missing... about 200 yards from home, I lost all power and th me truck slowly stalled out and gave out.
The ALT gague was reading normal, and the only changes I’d recently made were with the bottom two most fuses the day before (nothing that I think would effect the charging system).
Any ideas?
Are you still running points, and have you changed/set them recently? Your description sunds like what's happened to me in my truck when the points gave out.
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hdman90
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Re: Truck Lost Power and Stalled

Post by hdman90 »

Did a test this past weekend, charged the truck, started it, and let it run for awhile... The battery voltage just kept dropping, but the truck ran fine. So, yesterday, I removed the alternator and took it in to get tested this morning to try to isolate my issue. Alternator tested bad, they weren't even able to get a spark between the two contact points.
So, it is in getting repaired and should be done by the end of the day!
1969 F-100 LWB 2wd 240 3spd manual
1969 F-250 LWB 4wd 360 4spd manual
1976 F-250 Supercab LWB 2wd 390 4spd manual
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jzjames
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Re: Truck Lost Power and Stalled

Post by jzjames »

hdman90 wrote: The ALT gague was reading normal,
So do you need to check out your alt. guage?
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bluef250
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Re: Truck Lost Power and Stalled

Post by bluef250 »

The Alt gauge probably will not help as it compares voltage of Alternator to the Battery. The alt gauge for the most part is pretty poor.

You can add a voltage gauge, which would help.
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hdman90
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Re: Truck Lost Power and Stalled

Post by hdman90 »

bluef250 wrote:The Alt gauge probably will not help as it compares voltage of Alternator to the Battery. The alt gauge for the most part is pretty poor.

You can add a voltage gauge, which would help.
Good to know, I guess I never really understood how it worked. Thanks!
1969 F-100 LWB 2wd 240 3spd manual
1969 F-250 LWB 4wd 360 4spd manual
1976 F-250 Supercab LWB 2wd 390 4spd manual
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Re: Truck Lost Power and Stalled

Post by Ranchero50 »

Yeah, ignore or replace the alt gauge with a top pivot Sunpro voltmeter like I did. Wasn't too difficult and gives an honest reading.
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hdman90
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Re: Truck Lost Power and Stalled

Post by hdman90 »

Ranchero50 wrote:Yeah, ignore or replace the alt gauge with a top pivot Sunpro voltmeter like I did. Wasn't too difficult and gives an honest reading.
Ranchero, do you happen to have a write up on how you did that??
1969 F-100 LWB 2wd 240 3spd manual
1969 F-250 LWB 4wd 360 4spd manual
1976 F-250 Supercab LWB 2wd 390 4spd manual
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Ranchero50
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Re: Truck Lost Power and Stalled

Post by Ranchero50 »

It's in my build thread in the projects subforum.
'70 F-350 CS Cummins 6BT 10klb truck 64k mile Bahama Blue

Contact me for CNC Dome Lamp Bezels and Ash Tray pulls.
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hdman90
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Re: Truck Lost Power and Stalled

Post by hdman90 »

Ranchero50 wrote:It's in my build thread in the projects subforum.
Thank you, I'll have to look it up!
1969 F-100 LWB 2wd 240 3spd manual
1969 F-250 LWB 4wd 360 4spd manual
1976 F-250 Supercab LWB 2wd 390 4spd manual
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