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Old 04-20-2018, 04:33 PM
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Question About Charging Voltage On Not Ford

I've been getting some spurious CEL's and other alarms on a Not-Ford, and have been reading that a low-voltage situation will cause some unusual alarms to show up. I have a brand new battery, and the alternator is original(127,000 miles). I'm wondering if the alternator is hit or miss.

I'm getting 14.0 volts at the battery when the engine is running at 1000 rpm. Is this an acceptable voltage produced from the alternator?

On edit, the battery voltage with the engine off is 12.5 volts.
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Old 04-20-2018, 04:36 PM
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To the best of my knowledge the minimum charging voltage for a 12v lead acid battery is 13.8 volts. Sounds like your alternator is fine in my unprofessional opinion
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Old 04-20-2018, 04:41 PM
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Thank you, Frank. Your "unprofessional" opinion counts.
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'78 F-150 Lariat

Quote:
Originally Posted by john112deere
I think the lens of time is required to differentiate between the real milestones, and the detours along the way.
Quote:
Originally Posted by mrxlh View Post
Strippers, ammo and SKS, wow, that is almost sig worthy!!
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Old 04-20-2018, 09:04 PM
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14ish is normal output. 12-13 is normal battery voltage. I know the wife 2017 wrangler threw a light from sitting all winter and the battery was low.
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Old 04-21-2018, 06:54 AM
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Battery volts and charge are fine.
Time to hook up a scanner and pull the codes.
post them, we will help figure out what's going on
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Old 04-21-2018, 06:55 AM
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Battery volts and charge are fine.
Time to hook up a scanner and pull the codes.
post them, we will help figure out what's going on
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Old 04-21-2018, 09:39 AM
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Quote:
Originally Posted by fatherdoug View Post
I'm getting 14.0 volts at the battery when the engine is running at 1000 rpm. Is this an acceptable voltage produced from the alternator?

On edit, the battery voltage with the engine off is 12.5 volts.
Normal. What are you working on? This because, I have an ELM327 adapter that's looking for a good home, the price is so right, and this + one of several available apps will allow you to pull the generic OBDII codes on your Android phone (tablet).
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Old 04-21-2018, 10:11 AM
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Thank you all. I have an OBD II scanner that came up with only one code which indicates a small evaporative emission leak (P0456). I'm thinking maybe gas cap, so I ordered a new one.

I might get banned, but the car is a 2009 Toyota 4runner with 4.0 liter engine. I am getting the check engine light, and also the "VSC Off"(Variable Skid Control) light at the same time. Some reading has indicated that the Toyotas will throw some unrelated codes that don't apply to the real problem.

I can clear the code via the OBD scanner and it will come back in a couple days later.
Thank yous guys for your help.
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'78 F-150 Lariat

Quote:
Originally Posted by john112deere
I think the lens of time is required to differentiate between the real milestones, and the detours along the way.
Quote:
Originally Posted by mrxlh View Post
Strippers, ammo and SKS, wow, that is almost sig worthy!!
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Old 04-21-2018, 10:37 AM
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Old 04-21-2018, 11:43 AM
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I swear to God, I thought it was a Ford when I bought it..........
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'78 F-150 Lariat

Quote:
Originally Posted by john112deere
I think the lens of time is required to differentiate between the real milestones, and the detours along the way.
Quote:
Originally Posted by mrxlh View Post
Strippers, ammo and SKS, wow, that is almost sig worthy!!
Reply With Quote
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