After I flashed the sct tune in my volts have stayed around 15. What is going on?
Sea Lawyer
After I flashed the sct tune in my volts have stayed around 15. What is going on?
Sinister with style
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
Build Date
5/31/02
Sequence#
#363 of 7839 Black Marauders
Dyno tested power
450 RWHP & 405 RWTQ on 93 octane
Best 1/4 mile time to date
12.456@109mph
Visit my Garage
Blackened300a's Garage
Sea Lawyer
Not yet. Will try that.Originally Posted by Blackened300a
SSDD
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.
"A street walking cheetah, with a heart full of napalm."
"If You can keep Your Head About You, While Others are Losing Theirs and Blaming It on You..."
"Sometimes it is wiser to remain silent, and seem a fool, than to speak, and remove all doubt."
"We've been looking for the enemy for some time now. We've finally found him. We're surrounded. That simplifies things."[5]
Sea Lawyer
Well, I did disconnect the battery when I put the cai on. Maybe I didn't get a good connection afterwards. But the terminals were really clean.
Super Touring
analog can be hard to read accurately. My xcal2 obd2 tool usually reads 14.1 to 14.2
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.
Sea Lawyer
It read 12 before I did anything to it.
Super Touring
14 to 15 is where you want it, 12 is actually low. Problem solved!
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
Sea Lawyer
Why would I want it at 14-15? Isn't everything engineered to run at 12....since like 1950?
Super Touring
12 is more like the minimum you ever want to see. You want the vlt to be average at 14, so when other systems in car engage you never drop below 12. Trust me 14 volts in a panther is what you want
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
Sea Lawyer
Sounds good. I rest assured.
Everything Marauder, LEDs & HI
The voltmeter is measuring the OUTPUT of the alternator. If it says 12 volts then your alternator isn't working.
“When you can’t make them see the light, make them feel the heat.”
Ronald Regan
"The only way to deal with the Islamic State - these blood thirsty, blood-drunken, terrorists -
is to kill them, keep on killing them, until you kill the last one, then you kill his pet goat."
Lt. Colonel Ralph Peters
“Be polite, be professional, but have a plan to kill everybody you meet.”
"I come in peace. I didn't bring artillery. But I'm pleading with you, with tears in my eyes, if you **** with me, I'll kill you all"
General James Mattis
Senior Member
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
73 is the best number.
"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.
The Blackbird
Trilogy #61
Driveway Queen
The Spruce Goose
2004 Grand Marquis LS Limited Edition
Daily Driver
Sea Lawyer
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.
There are currently 1 users browsing this thread. (0 members and 1 guests)
Posting Permissions
Reply With Quote