Lobo1
Junior Member
A buddy of mine called me yesterday. He has an 05 T C. He said he noticed his headlight going dim and brightening back up the other morning on his way to work. Said his indash bolt meter would be at 14-15 volts when idling but when he gives it gas it drops to 10-11 volts. Then it quit when he was about 1/2 way to work. No more fluctuations until yesterday morning it started doing it again. Did it all the way to work and all the way back home.
I went onetime there and here's what I have checked so far:
Checked battery voltage with Fluke 87 DVOM: 12.7 volts with switch off.
Charged battery for an hour and a half at 10 amp setting on his charger. Rechecked voltage still reading 12.7 with switch off.
Started engine and checked voltage at idle (1000 RPM). Read 14.8 volts
Revved engine and voltage at battery posts dropped to 10.4 volts but immediately went back to 14.8 when went back to idle. Revved and HELD at 2000 RPM and voltss would drop back and forth from 14.8-10.4 ish constantly.
Checked ground between regulator and frame. Good (0.0 on meter)
Checked AC voltage on stator output wires: 26.8 at 1000 rpm idle, 53.7 at 2000 rpm.
That's all I checked so far. Had to get home, shower and bed. Getting late. Work today. Put his battery tender on all night and he is carrying battery to be load tested today.
Anyone ever seen this problem??
Oh yeah, he bought battery new last month. ( but that don't really mean nothing)
Any suggestions greatly appreciated.
Ride safe
I went onetime there and here's what I have checked so far:
Checked battery voltage with Fluke 87 DVOM: 12.7 volts with switch off.
Charged battery for an hour and a half at 10 amp setting on his charger. Rechecked voltage still reading 12.7 with switch off.
Started engine and checked voltage at idle (1000 RPM). Read 14.8 volts
Revved engine and voltage at battery posts dropped to 10.4 volts but immediately went back to 14.8 when went back to idle. Revved and HELD at 2000 RPM and voltss would drop back and forth from 14.8-10.4 ish constantly.
Checked ground between regulator and frame. Good (0.0 on meter)
Checked AC voltage on stator output wires: 26.8 at 1000 rpm idle, 53.7 at 2000 rpm.
That's all I checked so far. Had to get home, shower and bed. Getting late. Work today. Put his battery tender on all night and he is carrying battery to be load tested today.
Anyone ever seen this problem??
Oh yeah, he bought battery new last month. ( but that don't really mean nothing)
Any suggestions greatly appreciated.
Ride safe