After I flashed the sct tune in my volts have stayed around 15. What is going on?
After I flashed the sct tune in my volts have stayed around 15. What is going on?
My tuner did something to increase the output of the alternator in my tune and it gave me a higher reading as well. I also lost the feature when the field shuts off at WOT. Did you put it back to stock and see what it does?
2003 MERCURY MARAUDER 300A
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Mine reads just about there all the time, and I don't have a tune, or tuner, wasn't untill I cleaned the battery terminals.
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analog can be hard to read accurately. My xcal2 obd2 tool usually reads 14.1 to 14.2
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It read 12 before I did anything to it.
2021 F150 XLT Super Crew short bed - no chrome! - 3.5 Ecoboost 400hp/500tq - 36 Gal tank (600 miles) - 4x4 FX4 Offroad + Max Tow - 3.55 Locker - 10 Speed - Pro Power 2kva - 24mpg @ 80 Ford is still the best.
03 300A - Number 1727 - Super Touring - 10k in the best upgrades - 13.8@99 N/A - SOLD - STAP was so much fun, loved meeting you all and racing.
Why would I want it at 14-15? Isn't everything engineered to run at 12....since like 1950?
2021 F150 XLT Super Crew short bed - no chrome! - 3.5 Ecoboost 400hp/500tq - 36 Gal tank (600 miles) - 4x4 FX4 Offroad + Max Tow - 3.55 Locker - 10 Speed - Pro Power 2kva - 24mpg @ 80 Ford is still the best.
03 300A - Number 1727 - Super Touring - 10k in the best upgrades - 13.8@99 N/A - SOLD - STAP was so much fun, loved meeting you all and racing.
Sounds good. I rest assured.
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The tuner upped the idle RPM's that's all. 14.5VDC is OK. My MM has pullys and this helps with the voltage drop
"12 volts" is a nominal level, to distinguish between that and other battery systems. The open-circuit voltage per cell for a lead-acid battery is 2.1V, so with 6 cells you actually get 12.6V. With 2 batteries in series, like in some of the standby generators in my work sites, the open-circuit voltage is 25.2, but it's called a "24 volt" system.
To charge a battery, you need to have higher voltage than the open-circuit reading. 14.1 to 14.4 is considered optimum for a 12V system, while my generators run around 27.2 to 27.9.
You also can't depend on a gauge like the one in the car to be highly accurate...it's more of a "reference" so you can see if something changes a lot under normal operation, indicating a possible problem. You need a decent digital voltmeter to get a valid reading.
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Thanks for the explanation. I guess I was assuming the reading from the volt gauge would be after some sort of a voltage regulator. I just didn't want to start blowing fuses or something. I'm not super keen on electrical.
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