Tech
Thread Starter
Racer
Joined: May 2012
Posts: 303
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Tech
Yesterday I fired up my 03. Vert . Started right but did n't sound right.
After a few minutes I put it in Dr. And. the DIC. Tells me the engine is running on reduced power . Tried reset but no luck . Dis connected the battery for a reboot . No luck . When I prept it and put it way for the winter she was running perfectly . Anyone out there ever have this problem ??
John
After a few minutes I put it in Dr. And. the DIC. Tells me the engine is running on reduced power . Tried reset but no luck . Dis connected the battery for a reboot . No luck . When I prept it and put it way for the winter she was running perfectly . Anyone out there ever have this problem ??
John
Le Mans Master
Joined: Mar 2011
Posts: 6,835
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From: Columbia SC
My guess is you have low battery voltage. The C5 needs 12.5 to operate properly at startup before charging. The electronics are very sensitive to voltage.
A fully charged battery should be 12.6v or more. Sounds like weak battery.
It's not 12 volts it's 12.6 because each cell is 2.1 volts.
If the battery is
12.5 = 85% charged
12.4 = 65%
12.3 = 50%
12.2 = 35%
12.1 = drained
A fully charged battery should be 12.6v or more. Sounds like weak battery.
It's not 12 volts it's 12.6 because each cell is 2.1 volts.
If the battery is
12.5 = 85% charged
12.4 = 65%
12.3 = 50%
12.2 = 35%
12.1 = drained
Thread Starter
Racer
Joined: May 2012
Posts: 303
Likes: 0
Start up
Good place to start. Car will start with 12.2 volts or less but the electronics are NOT happy with 12.5 or less at startup. Many systems run diagnostics BEFORE you start the car and having voltage from the alternator AFTER the engine is running is too late for those systems.
