Author Topic: Weird speedo problem (Read 2493 times)

rider123 · « **on:** May 07, 2007, 02:24:23 PM »

I seem to have a weird speedo problem. It seems that occasionally the speedo goes wonky. It's like when you have a sticky cable on a cable driven bike with the speedo fluttering up and down but since my bike is a 2G its an electronic speedo it not a cable. When the speedo starts going wonky. I can rev the bike and the speedo goes up with it so I'm assuming its an electrical problem. I'm wondering if I'm getting RF interference from somewhere. I've checked the speedo connection from the sensor to the main fuse connection under the left side cover and it seems fine. It still does it with the speedo unplugged from the wiring harness so it must be underneath the tank somewhere. Any suggestions? The speedo does it's sweep no problem when you turn on the bike so I'm assuming its fine, and as it still goes wonky when the sensor is unplugged I'm assuming the sensor is ok as well.

It seems that if I leave the bike for a while it takes longer to start going wonky then when its heated up. Could it be that the wiring as its getting hotter is jumping the signal, like when a computer CPU gets hot the traces jump signals and crash the computer? I'll wait untill it cools off and check the main wiring harness coupler.

rider123 · « **Reply #1 on:** May 08, 2007, 12:27:38 PM »

Well it seems that the speedo gets wonkier with more RPM so I'm assuming its a bad ground somewhere. THanks for looking.

longislandbandit99 · « **Reply #2 on:** May 08, 2007, 06:26:47 PM »

Maybe you just like to ride real fast and you don't realize it?

rider123 · « **Reply #3 on:** May 09, 2007, 06:43:14 PM »

Good one! But I kind of like it better when I know by RPM I'm going 180 K/ph and its fluttering around 50K/ph! I swear officer I was only going 50! It says it here on this them dial thingy!

I'll call up the dealer tomorrow and get it checked out at least its under warrenty thank god. Bummer too just when I was getting Dale's stage 1 tuned in nicely!

longislandbandit99 · « **Reply #4 on:** May 11, 2007, 12:25:14 AM »

That excuse worked for me once. I have an old Honda FT 500 Ascot and the speedo and tach are stripped out so they just bounce all over the gauge. I got pulled over once for "allegedly" doing 75 mph in a 40 mph zone. The cop asked me "what the hell my problem was" and I told him flat out, my gauges are not accurate. He asked me then, "How the hell do I have the nerve to ride the bike like that?" I told him that its only a piece of sh*t 500c.c. single cylinder with five gears. I know that full throttle in 5th gear will only get me up to about 80 mph and when he pulled me over I was not at full throttle I had just shifted into 5th so I couldn't have been going more than about 55 mph. His response was, "You expect me to believe that bullsh*t story?" My answer, "Yes I do since my father who is a policeman himself paced me in his car to verify my speed at whatever throttle and gear I'm in. Here is his PBA card and courtesy badge."

The look on a cop's face when he hears and sees that is worth the price of admission I have to say. He gave me the "turn around and go home now very slowly. I'll be calling ahead to warn the other cops on the road about you." My answer, "Ok no problem since your precinct border is three blocks that way." He stuffed my license and regi into my broken gauge cluster and stomped off to his car then proceeded to follow me three blocks to where his precinct ended. Needless to say I didn't see another police car for the next thirty minutes it took me to get home . . .

. . . full throttle in fifth gear.