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Helldo

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Posts: 3
Reply with quote  #1 
2007 225
E225DPXSUA

First time posting anywhere (go easy)
I have a pair of 07 225 with tachs that are just analog with four lights. Very basic, I don’t know the models. I bought the boat used and the engines were not original to the boat.
The starboard engine has developed an intermittent problem with false readings. Sometimes it starts climbing all the way up. It bounces between the actual rpm and pinned. It happens at all throttle positions and rpms. Can anyone tell the best point of attack on this issue? My local evinrude “dealer” is useless.
Second question
I just purchased a Garmin Echomap and hope to integrate it with the engines, anyone have any good video link of the install?
Scottar

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Posts: 504
Reply with quote  #2 
Swap the Tach's. Fault will follow if the tach is faulty.
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Seafarer Victory with a 200HO
E200DHXSDS. 05137215
jimh

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Posts: 6,394
Reply with quote  #3 
From the description in the narrative, the tachometer sounds like it is an Evinrude SYSTEM CHECK TACHOMETER.

The SYSTEM CHECK TACHOMETER responds to the TACHOMETER SIGNAL.

The TACHOMETER SIGNAL is carried to the SYSTEM CHECK TACHOMETER via the MWS RIGGING HARNESS on a conductor with GRAY insulation. There are several connectors in the wiring path. Check all the connectors for any loose fitting, intrusion of water, or signs of corrosion.

At the engine the TACHOMETER SIGNAL is carried on the SYSTEM CHECK CONNECTOR to the engine wiring harness. 

The TACHOMETER SIGNAL originates from the ENGINE MANAGEMENT MODULE or EMM at Connector J1-A. Check that connector for fit and condition.

If the testing as recommended above by SCOTTAR shows the problem originates with the engine, the cause could be a problem in the wiring or connectors. If the wiring and connectors are sound, then the problem could be in the EMM.

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johnmcm1

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Posts: 4
Reply with quote  #4 
Also verify ground connections on gauge. The ground side is often overlooked as a culprit. You can run a separate wire from battery to gauge to illuminate your harness.
jimh

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Posts: 6,394
Reply with quote  #5 
Quote:
Originally Posted by johnmcm1
You can run a separate wire from battery to gauge to illuminate your harness.


If the device under discussion is a SYSTEM CHECK TACHOMETER, the connection to the tachometer is made via a multi-pin connector. To run a separate wire from the battery to the gauge would be difficult.

Also, when you write "to illuminate your harness" I do not understand what you mean. Do you mean to shine light on the harness? That is the usual meaning of "illuminate."

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jimh

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Posts: 6,394
Reply with quote  #6 
Quote:
Originally Posted by Helldo
I just purchased a Garmin Echomap and hope to integrate it with the engines, anyone have any good video link of the install?


If you need advice on how to use NMEA-2000 networking with modern engines, see

NMEA-2000 NETWORKS AND MODERN ENGINES
http://continuouswave.com/whaler/reference/NMEA2000.html

The above linked article gives specific advice for E-TEC engines. It contains no motion picture or sound recordings.

Usually marine electronic devices come with installation instructions included, either as part of the operating guide or as separate literature.

For advice on how to install GARMIN products, you should visit a GARMIN support website. This website discusses E-TEC engines.



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johnmcm1

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Posts: 4
Reply with quote  #7 
Sorry for the word “illuminate”. Auto fill got me. Meant to write eliminate.
Helldo

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Posts: 3
Reply with quote  #8 
Thanks for the advice. The boats out of the water right now so I will start at the engine with the connections and wires. If I don’t find anything I’ll try switching the wires on the tachs when I put it back in the water. Fingers crossed that it’s not the emm.
rickz

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Posts: 40
Reply with quote  #9 
On the back of your tach you will see a pot that has markings around it. Make note of where it is set, then take a small flat blade screw driver and turn the center of the pot back and forth several times and then set it back to where it was, your problem will be solved.
Helldo

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Posts: 3
Reply with quote  #10 
Wow that is an interesting solution. I will definitely try that. Do you think the emm readout will show all the times it was over 6k rpms? Or does that depend on if the emm is bad?
rickmcd53

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Posts: 2,495
Reply with quote  #11 
The speed profile in the engine report will show what percent of time that the engine has run in various rpm ranges.
jimh

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Posts: 6,394
Reply with quote  #12 
Quote:
Originally Posted by rickz
On the back of your tach you will see a pot that has markings around it. Make note of where it is set, then take a small flat blade screw driver and turn the center of the pot back and forth several times and then set it back to where it was, your problem will be solved.


This is very good advice, if the tachometer happens to have a pole adjustment switch. I am not certain the System Check Tachometer has such a switch. But, if it does, try the remedy suggested.

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rickmcd53

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Posts: 2,495
Reply with quote  #13 
The Evinrude system check tach has a pole setting switch on the back preset to 6 pole.
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