Hello Fellow C34 Owners,
I hesitated to post this question knowing the extent to which the general topic is already covered within the MB, but this specific diagnostic is driving me nuts, and I can't seem to find anyone who can help identify the likely culprit. So I'm appealing to the experts and taking a risk that while I did a thorough search of the MB to find this problem already posted, I didn't miss something. So, here goes...
I have a 1997 MkII #1357 and had no power to the engine panel at the helm when I first tuned on the ignition while "on the hard" this spring. The engine breaker (mounted on the engine - whose idea was that?), and engine panel breaker were fine. It turned out that wiggling the positive terminal leads on the battery resulted in the power being restored. I assumed I had a bad wire crimp, bad wire terminal or dirty leads, etc., but everything looked good seemed to work fine after my discovery. Fast forward three weeks and it had happened only one other time with the same remedy. However, last weekend, when I tried engaging the glow plugs, the power went out at the engine panel again. I needed to completely remove and then reconnect the battery wires (either positive or negative) for about 30 seconds to restore the power to the engine panel but when trying again, engaging the glow plugs caused the power to go out. This now happens consistently.
I've opened up the engine compartment and checked for any loose wires. My mutimeter says I have about 13.4 volts coming out of the batteries and with the engine panel face removed, I was able to measure about 11.6 volts at the ignition switch before trying to engage the glow plugs. Out of desperation, I tried just engaging the starter before trying the glow plugs and the starter worked, after which the glow plugs would engage without loosing power and get the engine started. Once running, the tachometer was not working and the ammeter on the engine panel read barely above 12 volts regardless of the engine RPMs. I assume isn't quite right.
My theory after reading more about this (and unfortunately getting myself more confused), was that somehow the alternator is involved in the problem and may have faulty components that are causing the power supply to be interrupted when the power draw increases to engage the glow plugs. If true, I don't know why the starter would work given that is huge draw as well.
I'd really appreciate any advice or guidance on what might be causing the problem or what else I should be checking.
I'm so grateful to the C34 community and have learned a great deal from other's experiences and expertise.
Thanks in advance and hope everyone is well and having a great sailing season.
-Mark Stein, SteinWay IV #1354
Milwaukee, Wisconsin
I hesitated to post this question knowing the extent to which the general topic is already covered within the MB, but this specific diagnostic is driving me nuts, and I can't seem to find anyone who can help identify the likely culprit. So I'm appealing to the experts and taking a risk that while I did a thorough search of the MB to find this problem already posted, I didn't miss something. So, here goes...
I have a 1997 MkII #1357 and had no power to the engine panel at the helm when I first tuned on the ignition while "on the hard" this spring. The engine breaker (mounted on the engine - whose idea was that?), and engine panel breaker were fine. It turned out that wiggling the positive terminal leads on the battery resulted in the power being restored. I assumed I had a bad wire crimp, bad wire terminal or dirty leads, etc., but everything looked good seemed to work fine after my discovery. Fast forward three weeks and it had happened only one other time with the same remedy. However, last weekend, when I tried engaging the glow plugs, the power went out at the engine panel again. I needed to completely remove and then reconnect the battery wires (either positive or negative) for about 30 seconds to restore the power to the engine panel but when trying again, engaging the glow plugs caused the power to go out. This now happens consistently.
I've opened up the engine compartment and checked for any loose wires. My mutimeter says I have about 13.4 volts coming out of the batteries and with the engine panel face removed, I was able to measure about 11.6 volts at the ignition switch before trying to engage the glow plugs. Out of desperation, I tried just engaging the starter before trying the glow plugs and the starter worked, after which the glow plugs would engage without loosing power and get the engine started. Once running, the tachometer was not working and the ammeter on the engine panel read barely above 12 volts regardless of the engine RPMs. I assume isn't quite right.
My theory after reading more about this (and unfortunately getting myself more confused), was that somehow the alternator is involved in the problem and may have faulty components that are causing the power supply to be interrupted when the power draw increases to engage the glow plugs. If true, I don't know why the starter would work given that is huge draw as well.
I'd really appreciate any advice or guidance on what might be causing the problem or what else I should be checking.
I'm so grateful to the C34 community and have learned a great deal from other's experiences and expertise.
Thanks in advance and hope everyone is well and having a great sailing season.
-Mark Stein, SteinWay IV #1354
Milwaukee, Wisconsin