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[xuraax]

Today I went out on my Delphi equipped 2014 GT250 for the first time in 15 days.

A few minutes into the ride I noted that the rev counter was reading about 6000 when normally it would be reading around 3500. Moderately revving up the engine,  the meter was reading well above the safe limit of 12000. I stopped the bike and I noted the counter settled at around 3000 at idle when normally this would be reading about 1750.

I then switched off the engine and the counter settled at about 2000 instead of 0000. At this point I thought I had a mechanical issue with the counter needle. The ride lasted about 30 minutes and when I got home and switched off and restarted the rev counter went back to normal.

In the afternoon I went out again and this time I faced a different issue. The F1 lamp had turned on. I continued cruising for about an hour and when I got home I tried the Delphi method of identifying the fault. I,e. I pressed the "select" button for >12 secs and expected to see an error number instead of the clock numerals. Although the "cHe" message was displayed, the clock kept reading the time.

During all this I did not note any difference in the engine performance.

Any ideas of what is happening in either case?

Thanks.

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[LX_SS]

A bad battery can cause lots of problems and the tacho incorrect reading your talking about.

[xuraax]

HI,

The battery is only about 3 months old and delivers a lot of thrust when starting. That said I will take a look at the cabling delivering power to the rev counter unit.

Since then I tried another method of identifying the error code which basically requires you to short the connector under the back seat and then press the select button for >10sec.

This gave the error 0171. Unfortunately this error code is not listed in my list of errors. Does anyone know what it is?

Yesterday I spent the whole day out on the bike and except having the display toggling between speed and "F1" the bike ran perfectly.

[LX_SS]

is your charge circuit working correctly, rec reg/stator

these go bad can cause your battery to go bad.

also bad earths will do it.

[xuraax]

is your charge circuit working correctly, rec reg/stator

these go bad can cause your battery to go bad.

also bad earths will do it.

When I installed the new battery I did check that the charging voltage was reaching a healthy figure, which right now I don't remember the value.

When I took off the tank, a while back, I did notice that a few connectors had some corrosion deposits ( the green stuff) . I treated these with electrical contact cleaner. I gave the same treatment to the other connectors in this area even those without corrosion. I guess I need to go through all of them.

I still would like to know what error 0171 stands for.

I also have not managed to erase the fault on the display. The methods known to me are:

1. Toggle the main switch rapidly at least five times.
2. Disconnect the battery terminal.

It seems, despite what people state, the ECU does manage to retain information after switching off and even disconnecting. Alternatively error 0171 is being triggered each time I turn on the the ignition switch.

[umop-ǝpisdn]

0171 = lean burn state detected in front cylinder.

Is there perhaps a vacuum leak somewhere?

[xuraax]

0171 = lean burn state detected in front cylinder.

Is there perhaps a vacuum leak somewhere?

Thank you very much for your input. I will check this out.

Can I ask from where you got the info about error code 0171? My list of error codes does not contain any number in that range.

Regards

[umop-ǝpisdn]

List of Delphi ECU generic error codes:

http://www.launchtech.co.uk/dtc-codes-list/

[xuraax]

List of Delphi ECU generic error codes:

http://www.launchtech.co.uk/dtc-codes-list/

That is an interesting list which I have seen before but have never linked it with Hyosung Bikes.

Which sensor would trigger this fault? Since The bike itself seems to be running normally I am wondering if this is  a sensor issue. Swapping the 2 sensors should confirm or rule out this.

[umop-ǝpisdn]

Good thinking.

The O2 sensor would trigger that alert.