Charging question
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From: Perry Georgia
Charging question
I have a 1987 F250 Diesel N/A with a C6. When I bought the truck a few years ago the tach never worked even though I changed the sender unit but I could never find a dash with a tach. I finally found a dash with a tach and bought it. The question I have is after the dash change the volt meter shows it's only charging about 12 volts and the gage shows that's all it's doing. Before the dash change the gage would show a lot more movement in the gage and when I checked with a hand held meter it shows I"m only charging 12 volts idleing or reving the engine. I thought I messed up by not unhooking the batteries so I bought another alternator, a 130 amp alternator which is what I"ve been running for the last 2 or 3 years. Before the dash change everything was charging fine but after the change it looks like the alternator is only putting out 12 volts with both alternators. On the back of the dash there is a small, 1" by 2" ic card held on by 2 small screws. I"m wondering if it has something to do with the charging circuit.
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Thread Starter
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Posting Guru
Joined: Aug 2006
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From: Perry Georgia
Well just fyi, I ended up replacing the old cluster with the working voltmeter and swapped the tach in the old one with the new one. That's fixed. Niow the WTS light isn't coming on. I can see the gloplugs after they cycleing by watching the voltmeter.
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