puckhead95
Member
- :
- 2013 CX5 Sport
Howdy y'all. My wife has a 2013 CX5. It still had the original Panasonic battery with about 55 months on it. Cranking was weak and she was told on her last couple of oil changes that the CCA was low so I figured it was time for battery.
I put in the new battery and it seemed hunky dory. Started right up. That was Friday. She drove it Saturday and parked it for the weekend. Tuesday morning she tried to start... no go. What the hell?
I tried it again later and it cranked over but was very weak. So I let it run a bit in the driveway and it charged up enough to let me do some experimenting.
I went and ran an errand, basically a 1 hour round trip drive without using lights except daytime runners and no radio, fan, heat, etc.
After geting home, turned the car off, voltage at 12.65
Waited 15 minutes and checked again, voltage at 10.65
Left car off a bit longer and checked again, at 10.65
Started car, dropped to < 8v for a sec and then kicked up to 13.70
Ran engine at 1500-2000 rpm for 10 minutes with lights, defroster and fan all on at different times. Voltage dipped briefly to as low 13.1v when defroster turned but stayed at 13.7v until car warmed up and then started falling slowly to 13.1v
Turned car off and voltage fell to 10.9 within a minute.
Checked after 5 minutes, at 11.6v
Checked 20 minutes later, back up to 12.0v
WTF? When the battery had enough charge, the starter and engine kicked right over. The alternator must be charging it but the battery won't hold a charge. Bad regulator? I didn't test it before i put it in but maybe it's bum battery?
FWIW, I'm in SoCal. It hasn't been much below 50, maybe 45 at the lowest lately.
Thanks for any ideas on this one.
I put in the new battery and it seemed hunky dory. Started right up. That was Friday. She drove it Saturday and parked it for the weekend. Tuesday morning she tried to start... no go. What the hell?
I tried it again later and it cranked over but was very weak. So I let it run a bit in the driveway and it charged up enough to let me do some experimenting.
I went and ran an errand, basically a 1 hour round trip drive without using lights except daytime runners and no radio, fan, heat, etc.
After geting home, turned the car off, voltage at 12.65
Waited 15 minutes and checked again, voltage at 10.65
Left car off a bit longer and checked again, at 10.65
Started car, dropped to < 8v for a sec and then kicked up to 13.70
Ran engine at 1500-2000 rpm for 10 minutes with lights, defroster and fan all on at different times. Voltage dipped briefly to as low 13.1v when defroster turned but stayed at 13.7v until car warmed up and then started falling slowly to 13.1v
Turned car off and voltage fell to 10.9 within a minute.
Checked after 5 minutes, at 11.6v
Checked 20 minutes later, back up to 12.0v
WTF? When the battery had enough charge, the starter and engine kicked right over. The alternator must be charging it but the battery won't hold a charge. Bad regulator? I didn't test it before i put it in but maybe it's bum battery?
FWIW, I'm in SoCal. It hasn't been much below 50, maybe 45 at the lowest lately.
Thanks for any ideas on this one.