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probably a stupid problem

5K views 10 replies 5 participants last post by  PinoyRider88 
#1 · (Edited)
I searched and only could find cars (or older bikes) with the same issue and I'm not 100% sure it translates to my bike 1:1, so I wanted to ask you guys.

Anyway, I have a completely stock 2014 ZX6R and I was going down the highway and after a particularly annoying bump I noticed my abs light came on. I hit this thing all the time often so didn't pay it much mind at the time. However, a few minutes later I happened to notice the light. Came to a stop light, quickly turned the bike off and on again to see if that reset it. It did not, light was still on.

Wondering if it was just a glitch, I brake tested and sure enough, my ABS wouldn't activate(not a real surprise). I reached my destination and turned the bike off and let it sit for about an hour. Came back out, turned the bike back on and it went through it's normal starting diagnostic (where the rpm needle goes up and down) and came back fine. Started the bike up and ABS light is now off and as I come to my first stop, I feel the ABS activate on what I feel was NOT a needed ABS-assisted brake, but i figured it was in the process of resetting.

I start going and make it a few hundred feet and notice my speedometer keeps jumping between 15, 17, 18, and 19MPH. Then the ABS light comes back on.

I go a few more miles and suddenly speedometer goes to 0. A few moments after that, nearly every light on the dash lights up. Temp still reads normal, clock still reads normal, and gear indicator still correct.

Got it home, checked the fuses and they all looked good.

tl;dr
completely stock 2014 ZX6R. ABS light came on after bump, went off after extended stop. Speedometer was then jumping between low numbers, ABS light came back on, and then speedometer stuck at zero. Then all lights on dash came on. All fuses good.

Now, it sounds like my speed sensor failed. Am I correct in that thinking or am I way off? Also is there any danger of me riding the bike around until I can a minute to fix it? I'm mostly concerned that whatever the problem is, it is also controlling the flow of fluid to something and running it could seriously damage the engine.

Finally, anyone know how long does it take to replace a speed sensor once I have the part?
 
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#2 ·
Brake fluid has nothing to do with the engine. I don't think you can cause any damage.
BUT... knowing that you have an issue with braking...is somewhat important for your safety. So i would advise you not to ride it until you sort this out.
At first, i would guess an issue with the ABS/TC sensors at your wheels, but since your speedo is acting, its' sensor could also be the cultprit.
Is the sensor on your front sprocket cover like the 09? If yes, that shouldn't be hard to replace.
 
#4 ·
I'm actually not 100% where the sensor is, I think it is on the front sprocket, but I haven't found anything that says definitively yet. Does this have a different name, perhaps "Rear Wheel Rotation Sensor"? I'm looking at the 2013 service manual and "speed sensor" doesn't appear to be a thing.
 
#3 ·
I would look closely at both the front, and rear wheels, around the sensor rings...... the wheel speed is what the ABS and the speedometer use.... if one or both are not connected, you would get all sorts of faults.

Should have something in the stored trouble codes..... might tell you which sensor has come adrift. this sort of part should be covered for the life of the bike, or at least through your standard warranty. If you have coverage, I'd have a shop fix it rather than poke around.
 
#6 ·
HO. LY. SHIT.

Ok so after pouring through the service manual, I looked closely at this "rear wheel rotation sensor" and, as you mentioned RJ, it looked like it was a possible source of whatever the problem is... so I went down to my garage to locate it and see if there was anything obviously broken. I found it, touched it with my finger ...and it slid toward the bike by like a quarter inch. Seeing that there was a screw, I gave it a quick check and realized the damn thing was ridiculously loose.

Screwed it in tightly, started the bike up and went for a quick ride. ABS light went off, speedometer was hitting 30+ without an issue, and a brake test revealed ABS was fully functional.

All issues resolved.

Unreal. Thrilled that this was a super-simple issue, but flabbergasted that it was a super-simple issue that kept me from riding it for a few days. I can only imagine the cost it would have been to take the bike in to be serviced and them seeing THIS was the issue.

THANK YOU BOTH!!!
 
#9 ·
that should also indicate it may be a good idea to go over every screw you can see on the bike, and check to make sure they are snugged down. Don't go crazy -- look for ones that are obviously not as tight as they should be. Steel screws into aluminum can strip out if you go gorilla on the things.
 
#11 ·
Semi older thread but got my answer.

Was looking to go -1/+2(pitbull sprockets) and found my answer. Was concerned if it would eff with the speedo/tachometer(Refer to @THUG's -1/+2 thread) but it seems the 13+ reads of the rear speed sensor and is unaffected by sprocket change. D.I.D. 520 ERV3 and pitbull sprockets here I come!

Now who has a spare MotionPro PBR your bestest Pinoy friend can borrow in PA?
 
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