I have an alternator in my '69. I was cruisin' the other day and the generator light came on. I finished driving where I had to go, the light faded off, so I drove her a few more times with the light coming on more often than not... till it died.
She's on a trickle charger now so I can get enough juice to work with. My wiring under the dash is a mess and several things have shorted out recently. Although those things are fixed, it's still a mess. Other than all of that, is there a better place to start looking for the problem?
1969 Bus - Generator Light Was On For A While....
- coilette
- I'm New!
- Location: betwwen san jose and inuvik
- Status: Offline
1969 Bus - Generator Light Was On For A While....
everything has a balance
- Sluggo
- Wishin' I was Fishin'
- Location: Portland, Or.
- Contact:
- Status: Offline
Make sure the belt is not broken and that it is spinning the fan.
Start by making sure all of your connections are good and then move on to testing the battery, then the alternator.
Start by making sure all of your connections are good and then move on to testing the battery, then the alternator.
1977 Bus with Sunroof - "Lucky '77"
2000cc Type IV w/Dual Weber 36s,
Aircooled.net SVDA w/Compufire,
Redline Weber Fuel Pump,
Holley Regulator,
Half Ass Brush & Roller Rustoleum Paint Job,
Incomplete Custom Interior,
Dual Batteries,
Crunched Slider Door.
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- Amskeptic
- IAC "Help Desk"
- Status: Offline
Re: 1969 Bus - Generator Light Was On For A While....
This is a classic symptom of a grounding rotor IF the light comes on at higher rpms, then starts slowly coming on at lower and lower rpms until finally it is on even at idle.coilette wrote:I have an alternator in my '69. I was cruisin' the other day and the generator light came on. I finished driving where I had to go, the light faded off, so I drove her a few more times with the light coming on more often than not... till it died.
She's on a trickle charger now so I can get enough juice to work with. My wiring under the dash is a mess and several things have shorted out recently. Although those things are fixed, it's still a mess. Other than all of that, is there a better place to start looking for the problem?
Colin
BobD - 78 Bus . . . 112,730 miles
Chloe - 70 bus . . . 217,593 miles
Naranja - 77 Westy . . . 142,970 miles
Pluck - 1973 Squareback . . . . . . 55,600 miles
Alexus - 91 Lexus LS400 . . . 96,675 miles
Chloe - 70 bus . . . 217,593 miles
Naranja - 77 Westy . . . 142,970 miles
Pluck - 1973 Squareback . . . . . . 55,600 miles
Alexus - 91 Lexus LS400 . . . 96,675 miles
- jeb1978
- Getting Hooked!
- Location: Northern Illinois
- Status: Offline
OK, I'll bite... what is a "grounding rotor"? I've been having intermittent generator-light-on issues on my '69 Bus as of late. It would come and go for about two weeks, be on solid for a key cycle, then off again. Then it was off at idle, but on at 3000 RPM and higher. Now it's on all the time.This is a classic symptom of a grounding rotor IF the light comes on at higher rpms, then starts slowly coming on at lower and lower rpms until finally it is on even at idle.
All the testing I've done per the Bentley says my generator is bad (30 amp). I noticed that one of the wires from commutator is broken off when swapping the brushes around. I would assume this is the problem.
1969 Westfalia 1600cc single port
- Amskeptic
- IAC "Help Desk"
- Status: Offline
Grounding rotor symptom is specific to alternator-equipped cars.Bartoli wrote:OK, I'll bite... what is a "grounding rotor"? I've been having intermittent generator-light-on issues on my '69 Bus as of late. It would come and go for about two weeks, be on solid for a key cycle, then off again. Then it was off at idle, but on at 3000 RPM and higher. Now it's on all the time.This is a classic symptom of a grounding rotor IF the light comes on at higher rpms, then starts slowly coming on at lower and lower rpms until fiunally it is on even at idle.
All the testing I've done per the Bentley says my generator is bad (30 amp). I noticed that one of the wires from commutator is broken off when swapping the brushes around. I would assume this is the problem.
Broken wire on commutator? Yes.
Colin
BobD - 78 Bus . . . 112,730 miles
Chloe - 70 bus . . . 217,593 miles
Naranja - 77 Westy . . . 142,970 miles
Pluck - 1973 Squareback . . . . . . 55,600 miles
Alexus - 91 Lexus LS400 . . . 96,675 miles
Chloe - 70 bus . . . 217,593 miles
Naranja - 77 Westy . . . 142,970 miles
Pluck - 1973 Squareback . . . . . . 55,600 miles
Alexus - 91 Lexus LS400 . . . 96,675 miles