My Tach needle is hopping all over the place. Not sure why.
In the video, Eleanor is on her centerstand, engine is warm. Neutral gear. I start her and close the choke.
This happens when I'm riding as well, in all gears. It's quite distracting.
Take the cable off the back of the tach and pour some oil down the cable. Run the engine with the cable off and add some more oil, maybe a tea spoon altogether. Let us know if that helps.
regards
mech
Ele is a 2004 GS500F. There is no Tachometer cable. There are three electrical wires that connect to the rear of the Tach.
I once had a tachometer in a 1976 Mitsubishi Galant that did that. With my issue, it turned out to be that the plugs were corroded in the engine bay. See if you can track the wires and find anything unusual.
And I even went out and checked my 89 to make sure it had a cable. :embarrassed:
regards
mech
Hopping electronic tach ... yup. . Check the wires and connectors... wires for suspicious looking mini bends or kinks and connectors for crud and heat malformations. .. tedious but necessary?
Pull the gauges, trace the wires into their respective plugs and clean check the connections
Orange + Black/white are on a dual plug and socket
Black/red is on a single connecter.
Also check and tighten the 3 screw connecters on the back of the tacho itself.
Orange is the permanent live, Black/white the ground and Black/red is the signal from the ignition module. Also check the Black/red back at the ignition module plug.
2 other points.
The tacho has some basic electronics in it that interpret the signals from the module. If cleaning/checking the connections doesn't fix it its possible the tacho itself has gone faulty.......and if the charging system starts to break down and lets some AC into the system or if the voltage in the system drops this will also effect the tacho so test the charging system also.
have you run a magnet over the tacho lately? I know that sounds weird, but my needle had flipped passed the RPM line, as was on the other side of that little pin... lol I used a magnet to get it to go back to its default place, but ever since I've had a little "bounce" in my tach. but not this bad.
Okay, Figuring to do the simple fix first, I took the meters off and inspected the back of the tach. It was dirty back there. All three connectors were loose as well. Two were only slightly loose and one was about to fall out of the threads. I wiped the rust and filth off the best I could, and hand tightened the 3 connectors. Gave it a test run and it seems to work flawlessly now. I'm going to hook it back up and take it down the road and see how it keeps up at high RPM.
One thing, something came loose off of my tach that was keeping it secured to the housing. It looked to be glued but now it is not... the only adhesive I have is griplock glue. Is that safe to use to adhere it back into its place? Here is a pic:
(http://i.imgur.com/A0Omop2.jpg)
Griplock seems a bit weak,but its better than nothing.JB Weld would be my choice cos i wouldnt want to repeat this disassembly again.
buy one off of ebay?
Put some griplock in there to secure the post and took Ele down the road to test out the tach function. Successful fix.
Thanks for the tips, everyone.
I would have gone with 2 part epoxy, something like Araldite or Double Bubble, much stronger than Griplock.
Might be a good idea to check it again in a few weeks say.
This stuff really is the dogs........I always keep a few sachets in the tool-roll :thumb:
http://www.amazon.co.uk/Genuine-Loctite-Double-Bubble-Adhesive-Bonding/dp/B00KQ2VMD6 (http://www.amazon.co.uk/Genuine-Loctite-Double-Bubble-Adhesive-Bonding/dp/B00KQ2VMD6)