G
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·The Boxer is on the lift, and
The Boxer is on the lift, and I started on some simple tests. The safety switch was disconnected, so that I can run the pumps with the ignition on.......car not started.
Ignition on........I can hear the pumps. I felt them with my hand and both where working. Voltage across the pump terminals was 10.8 V each.
Ignition off.......I disconnected the ground wire from each pump, where it attaches to the frame. Ohm reading across the pump terminals was 0.5 Ohms each.
Things now get interesting! I thought of checking the votage, at the positive terminal of each pump, with ignition on, and ground still disconnected.
I turned on the ignition, and was surprised to hear the left pump working.........with NO ground. Underneath, I felt each pump, and the left one was on!!!!!! I measured the voltage and got: Right = 11.63V; Left = 11.33V (and running).
I then touched the ground wire to ground, of the right pump, and, as expected, saw a few sparks, and the pump started working........disconnecting the ground wire, the pump stopped.
I tried this to the left pump, even though it was running. I noticed a little difference in the sound, with wire grounded. However, the pump was running all along.
Is there a short in the left pump?
The Boxer is on the lift, and I started on some simple tests. The safety switch was disconnected, so that I can run the pumps with the ignition on.......car not started.
Ignition on........I can hear the pumps. I felt them with my hand and both where working. Voltage across the pump terminals was 10.8 V each.
Ignition off.......I disconnected the ground wire from each pump, where it attaches to the frame. Ohm reading across the pump terminals was 0.5 Ohms each.
Things now get interesting! I thought of checking the votage, at the positive terminal of each pump, with ignition on, and ground still disconnected.
I turned on the ignition, and was surprised to hear the left pump working.........with NO ground. Underneath, I felt each pump, and the left one was on!!!!!! I measured the voltage and got: Right = 11.63V; Left = 11.33V (and running).
I then touched the ground wire to ground, of the right pump, and, as expected, saw a few sparks, and the pump started working........disconnecting the ground wire, the pump stopped.
I tried this to the left pump, even though it was running. I noticed a little difference in the sound, with wire grounded. However, the pump was running all along.
Is there a short in the left pump?