Koso tach malfunction?

[burnt_toast]

I haven't ran my zip in a few weeks, and after redoing my intake setup I've noticed my koso tach isn't showing the right rpms anymore! It just jumps between random low numbers like 460 to 650 to 1500, 2300, etc.. but won't show my actual rpm.

I've tried re-wrapping the wire around the plug cable, but still same thing.

Any ideas?

[speedy_scooter]

Check the battery. It might be getting low.

[burnt_toast]

Check the battery. It might be getting low.

hmm, well normally when it does that the display just starts dimming, but its worth a shot i'll try a new one. this thing eats batteries like crazy as it is.. lol

[B.A.scoot]

Mine does too......................I keep spare batteries under the seat along with all the other spare crap I gotta carry.....................Anyone interested in buying this beast ???

[str8dum]

thats funny. i have not touched the battery since i got mine almost 2 yrs ago.

[speedy_scooter]

Which one do you have str8? The blue-backlight one or the non-backlight one? Mine goes through batteries pretty quick too.

[str8dum]

the backlit one.

[speedy_scooter]

Ahh, then you have it hooked up with the 3rd power wire right? If so the ones we have doesn't have that 3rd power wire. They run off pure watch batteries. lol

[str8dum]

your backlight is off the battery? how strange. mine doesnt backlight any more bc the LED shorted but it was powered by the scooter battery none the less.

[speedy_scooter]

No ours doesnt have a backlight at all. That's the difference. Your's is powered off of the scooter's battery and ours has a self contained battery.

[str8dum]

nah, only teh backlight was off the scooter battery. mine is 2032 battery powered as well.

[speedy_scooter]

Hmm, dunno. I wonder if the Koso engineers felt like putting more R&D into the more expensive backlight one... lol

Dunno what it is, I just know that I go for about 2-3 months on a battery and I gotta replace it. In the winter I just straight take it out because it just dies sitting there even not turning it on. Maybe different storage conditions like with temperature kill it. But 2 years vs 2 months seems extreme.

[burnt_toast]

Hmm, dunno. I wonder if the Koso engineers felt like putting more R&D into the more expensive backlight one... lol

Dunno what it is, I just know that I go for about 2-3 months on a battery and I gotta replace it. In the winter I just straight take it out because it just dies sitting there even not turning it on. Maybe different storage conditions like with temperature kill it. But 2 years vs 2 months seems extreme.

thats about same here, 2-3 months mixed riding. still no chance to try out new battery, but I REALLY hope thats it..

[StepVino]

I haven't ran my zip in a few weeks, and after redoing my intake setup I've noticed my koso tach isn't showing the right rpms anymore! It just jumps between random low numbers like 460 to 650 to 1500, 2300, etc.. but won't show my actual rpm.

I've tried re-wrapping the wire around the plug cable, but still same thing.

Any ideas?

Maybe it's the ground wire? The engine runs fine?

[B.A.scoot]

I had the same problem with the temp. reading.....................it started jumping around all over the place........................got rid of the sensor that hooks onto the plug, and went with the one that screws into the jug........problem solved. At any rate, your problem might be in the wiring for your RPMs...............

[burnt_toast]

well thing is I haven't touched the wiring for either sensor, and i'm already using the screw in temp sensor which is still working.

i dont think there is a ground wire.

[B.A.scoot]

I didn't touch mine either, I think they got too hot and failed..................whatever, I'll sell you mine cheap.....................but it comes with a scooter attached..............lol just kidding....................if yours is toast, Toast, make me an offer.

[burnt_toast]

I didn't touch mine either, I think they got too hot and failed..................whatever, I'll sell you mine cheap.....................but it comes with a scooter attached..............lol just kidding....................if yours is toast, Toast, make me an offer.

well if you do decide to part, there might be some other things I'd like to pick up from you ;) I'll pm you.

[B.A.scoot]

Roger that.................

[burnt_toast]

As of now, tach is still not working! And now, when I just want to monitor temp, it switches back to rpms periodically!!! _-_-_-

I've tried a new battery and rewired the rpm plug wire several times with no better results.. damn this thing is just frustrating now. ***potty m

[B.A.scoot]

50 clams plus shipping Bro....................think about it...............pm me