Fi light flickering on

Hey,

So 4-6 months ago, the FI light on my '00 VFR came on. I ran the built-in diagnostic test, and it came back that one of the sensors (O2, I think) was faulty. I also found out that one of the ignition coils was completely disconnected, which meant that I was running on only 3 cylinders! I reset the error code, re-connected the coil, and went merrily on my way, happy to have the additional power. I never replaced the O2 sensor because the error never came back up after I reset it.

Then, a month ago, my R/R got fried because of corrosion in the connectors between the alternator and R/R. I replaced with an R/R from a ZX-14 (MOSFET), and again went merrily on my way.

A couple of days ago, my FI started flickering on and off. It seems that it goes on and off with one of the blinkers, and occasionally with the brake. It doesn't come on full power, but it is on, albeit dimly.

Should I be worried?
Edited by phendric, 06 August 2012 - 11:03 AM.

Search for the "orange block" grounding wire redo issue. Not uncommon problem and yours are the typical symptoms. There's a largish orange block on the left in front of the R/R wrapped in tape so you'll have to unwrap it. There are a lot of ground wires run through this block and they corrode over time. The fix is discussed in the other threads - some clean and go, while others hardwire the grounds and go.

Thanks for the tip.

Yeah...it looks like the problem I have will just get worse and worse until...

You're talking about threads like

http://www.vfrdiscus...hra-i-found-it/
http://www.vfrdiscus...st/#entry786445

?

Yeah, looks like I have some work to do...better go check my grounding block.

I just went through this, did the fixes and rode down from Vancouver to the Laguna Motogp with out a hitch. This Fi light issue can leave you on the road side. Many thanks for the guys that helped me on this site
http://www.vfrdiscus...71640-fi-light/
make sure you do our 3 egu grounds also.

Little video of the first lap turn 4

Attached Files

• [image: Attached File]  1st lap turn 4.MOV   33.2MB   55 downloads

Thanks for the tip.

Yeah...it looks like the problem I have will just get worse and worse until...

You're talking about threads like

http://www.vfrdiscus...hra-i-found-it/
http://www.vfrdiscus...st/#entry786445

?

Yeah, looks like I have some work to do...better go check my grounding block.

Also note the other possible issue mentioned in the threads and by maxredline here, and that's the direct-grounding of the ECU issue. Might be related to the grounding block issued, but not necessarily solved by messing with the grounding block, alone. I don't have any firsthand experience with the problem or solution - I just spend a lot of time on bike boards.

Hmmm, I checked out the orange ground block before seeing that I also need to check the ECU grounds. Orange ground block looks great - everything is clean and bright. How can I tell if there are issues with the wiring from the ECU? Visual inspection?

Hmmm, I checked out the orange ground block before seeing that I also need to check the ECU grounds. Orange ground block looks great - everything is clean and bright. How can I tell if there are issues with the wiring from the ECU? Visual inspection?

Sometimes there is no visible sign of any issues. The last guy with this problem just had to bite the bullet and wire his ECU directly to the frame ground. It solved his problem.

The last guy was me. Improved the ground block grounds (2) and installed (3) new ground wires from the ecu to the frame. No problems since.