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Hi all. Been away for a few months on a job assignment, but back to solve my electrical charging problem. The main problem is that the voltage across the battery does not increase as I rev up the motor to about 4k (guessing since the GS450GA does not have a tach). In fact, the voltage falls when I rev it up. If I disconnect the battery, the voltage drops to about 6-7 volts.
So, we (my son and I) did BassCliff's stator check. It passed the passive resistance or continuity tests. Less than 2 ohms, but not zero. It passed the stator's continuity to ground test (essentially infinity on my meter). It passed the AC output test (well over 60 volts at high rev, approximating the revs by ear because again no tach).
Based on the above, we thought the problem was the R/R. Initial test indicates that the diodes seem to be working correctly (current flow in the right direction, and no reverse flow). We used both an ohm meter and a simple light bulb probe with a 12 volt motorcycle battery. So, perhaps the regulator since the rectifier seem ok.
Initially bought a old GS450 R/R from ebay, but it did not have the right wire plug plus one of the diodes seem to be burnt (allowing reverse flow when it shouldn't). Bought a new R/R and installed it. Didn't work.
The charger was not putting out the 14+ volt with the battery connected (reading only about 12-13 volts), and 6-7 volts without the battery. Same as the original problem. Bummer.
So, we got a little creative. We tested the DC output at the R/R with different combinations of stator connections. When all three are connected, only got about 9-10 volts when rev'd. Then we hooked only pairs. Below are the results (using Suzuki's wire coding Y=yellow; W/Bl=white with blue tracer; W/R=white with red tracer).
Y+W/Bl+W/R connected to R/R => 9-10 volts
Y+W/Bl connected to R/R => 13+ volts (but less than 14 volts)
W/Bl+W/R connected to R/R => 13+ volts (but less than 14 volts)
Y+W/R connected to R/R=> 1 volt at most !!
I know that the color of the wire doesn't matter, and in fact they all could be yellow. I am using the coding as a way to illustrate the problem.
So, some how when only the Y and W/R wires are connected to the R/R, they seem to cancel each other out. It could be some short between these two wires between the stator and the R/R so the current is offsetting. But, we tried the continuity test, plus additional test of the wires between the stator and the R/R. Could not detect a short.
At this time, I am at a complete loss about what may be the problem.
Any help, suggestions, advice, recommendations, or words of wisdom would be greatly appreciated, and save me from pulling out the few hairs I have left.
Many thanks in advance.
So, we (my son and I) did BassCliff's stator check. It passed the passive resistance or continuity tests. Less than 2 ohms, but not zero. It passed the stator's continuity to ground test (essentially infinity on my meter). It passed the AC output test (well over 60 volts at high rev, approximating the revs by ear because again no tach).
Based on the above, we thought the problem was the R/R. Initial test indicates that the diodes seem to be working correctly (current flow in the right direction, and no reverse flow). We used both an ohm meter and a simple light bulb probe with a 12 volt motorcycle battery. So, perhaps the regulator since the rectifier seem ok.
Initially bought a old GS450 R/R from ebay, but it did not have the right wire plug plus one of the diodes seem to be burnt (allowing reverse flow when it shouldn't). Bought a new R/R and installed it. Didn't work.
The charger was not putting out the 14+ volt with the battery connected (reading only about 12-13 volts), and 6-7 volts without the battery. Same as the original problem. Bummer.So, we got a little creative. We tested the DC output at the R/R with different combinations of stator connections. When all three are connected, only got about 9-10 volts when rev'd. Then we hooked only pairs. Below are the results (using Suzuki's wire coding Y=yellow; W/Bl=white with blue tracer; W/R=white with red tracer).
Y+W/Bl+W/R connected to R/R => 9-10 volts
Y+W/Bl connected to R/R => 13+ volts (but less than 14 volts)
W/Bl+W/R connected to R/R => 13+ volts (but less than 14 volts)
Y+W/R connected to R/R=> 1 volt at most !!
I know that the color of the wire doesn't matter, and in fact they all could be yellow. I am using the coding as a way to illustrate the problem.
So, some how when only the Y and W/R wires are connected to the R/R, they seem to cancel each other out. It could be some short between these two wires between the stator and the R/R so the current is offsetting. But, we tried the continuity test, plus additional test of the wires between the stator and the R/R. Could not detect a short.
At this time, I am at a complete loss about what may be the problem.
Any help, suggestions, advice, recommendations, or words of wisdom would be greatly appreciated, and save me from pulling out the few hairs I have left.
Many thanks in advance.
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