525efi Tach reading high
05-30-2015 | 10:06 AM
#1
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From: Hollywood, MD, USA
525efi Tach reading high
2005 525efi, running on hose, idling just fine. The tach is saying anywhere between 2-3000 rpms. Smartcraft is reading normal 700-750 rpms.
What should I check, main ground on block? connections on the back of the tach? what else?
What should I check, main ground on block? connections on the back of the tach? what else?
05-30-2015 | 04:01 PM
#3
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No, I have a regular tach AND a smartcraft sc 1000 guage which show rpms, water temp, pressure, oil temp, pressure, etc. Smartcraft is acting normal, the tach is not. Tomorrow, I'm going to check the main ground, and the connections on the tach.
05-30-2015 | 04:32 PM
#4
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From: Ft. Worth TX
AGI convertor box = analog gauge interface - for digital engines to convert digital signals to analog signals.
More info - Check all plugs in and check for dark and or corrosion issues at pins and or connections
Tach is PCM driven hence AGI box for convertor of digital signals to analog read outs.
Also grey wire and location main harness Pin 2.
Check for bad or loose grounds within the circuit., and check back side engine ground(s)
More info - Check all plugs in and check for dark and or corrosion issues at pins and or connections
Tach is PCM driven hence AGI box for convertor of digital signals to analog read outs.
Also grey wire and location main harness Pin 2.
Check for bad or loose grounds within the circuit., and check back side engine ground(s)
Last edited by BUP; 05-30-2015 at 05:25 PM.
05-30-2015 | 04:37 PM
#5
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So you do not have this - especially for the TACH it can display both dig tach read out and the analog needle tach reading Just making sure. Click on link to see image.
http://www.blackdogmarine.com/images/79-889223K32.jpg
These are SC 1000 Tach and MPH gauges
http://www.blackdogmarine.com/images/79-889223K32.jpg
These are SC 1000 Tach and MPH gauges
05-30-2015 | 04:44 PM
#6
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From: Ft. Worth TX
maybe a good for whomever of the Smartcraft SC 1000 tach and MPH vid from Merc themselves. These are Smartcraft SC 1000 Tach and MPH gauges
Video link
https://www.youtube.com/watch?v=-jIzNPzxhX8
Video link
https://www.youtube.com/watch?v=-jIzNPzxhX8
Last edited by BUP; 05-30-2015 at 05:26 PM.
05-30-2015 | 04:52 PM
#7
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You must have monitor version 1.01 or 1.02 or monitor 2.00. I understand what you have now.
I would check the AGi convertor box and the connections could be POSSIBLE bad AGi box
Again AGi convertor box = analog gauge interface.
I would check the AGi convertor box and the connections could be POSSIBLE bad AGi box
Again AGi convertor box = analog gauge interface.
Last edited by BUP; 05-30-2015 at 05:26 PM.
05-31-2015 | 07:21 AM
#8
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Yes, that is what I have, not the gauges in the link above.
05-31-2015 | 02:32 PM
#9
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From: Ft. Worth TX
Yes sir I had to think for bit of what you exactly had. Then the bulb went off in the head. I know what you have as I listed versions.
Check easy stuff first - grounds , wires . connections, plug ins, Any of the plug ins I would disconnect check closely and reconnect to see what happens. if no progress then possible AGI convertor or tach itself.
Check easy stuff first - grounds , wires . connections, plug ins, Any of the plug ins I would disconnect check closely and reconnect to see what happens. if no progress then possible AGI convertor or tach itself.
