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Old 04-16-2009, 05:10 PM   #1
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Default Rev counter behaving strangly 4.3

My rev counter doesn't seem to be reading right it sits at about a 1000 for a while then jumps to 3000 anyone got any ideas why this is? its a new gauge, is the signal from the alternator or the coils on the 4.3?

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Gareth
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Old 04-16-2009, 05:57 PM   #2
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Default Re: Rev counter behaving strangly 4.3

check the connection in the back of the gauge........



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Old 04-16-2009, 07:54 PM   #3
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Default Re: Rev counter behaving strangly 4.3

Yea done that its all new any other ideas?
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Old 04-25-2009, 10:44 AM   #4
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Default Re: Rev counter behaving strangly 4.3

Just for the fun of it clean the terminals on the back of the tack and the connector anyways. They may look new but still give you your problem, it happened on our last boat
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Old 04-25-2009, 11:14 PM   #5
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Default Re: Rev counter behaving strangly 4.3

Its a brand new gauge

Does anyone know where the signal comes from is it from the alternator or the coil?
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Old 04-26-2009, 11:51 AM   #6
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Default Re: Rev counter behaving strangly 4.3

The coil.
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Old 04-26-2009, 09:13 PM   #7
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Default Re: Rev counter behaving strangly 4.3

Quote:
Originally Posted by Stressleave
The coil.

Is it just a feed from the live side then? I might run a temp one in see if it sorts it

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Old 04-28-2009, 01:00 AM   #8
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Default Re: Rev counter behaving strangly 4.3

I thought it comes from the neg side of the coil. You should be able to find a schematic on line.
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Old 05-27-2009, 05:16 AM   #9
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Default Re: Rev counter behaving strangly 4.3

My tach does the same thing, just starts floating to a higher RPM. Sometimes I can tap it and it will fall back to the correct reading. Mine's on a 5.0 MPI but sure sounds like the same issue.

I'm taking it in for some service this week and will let you know what they find. (still under warrranty, otherwise I would try to fix it myself :-)

Cheers,
-Greg
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Old 06-08-2009, 01:24 PM   #10
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Default Re: Rev counter behaving strangly 4.3

Hi mine did the same clean the connection on the tach and it did the trick easy fix
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