Tachometer Needle Doesn't Move - 600RR.net
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post #1 of 23 (permalink) Old 10-10-2012, 12:03 AM Thread Starter
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Tachometer Needle Doesn't Move

Hey everyone, I recently bought a used bike and I'm already having problems...

The tach needle on my 2006 stopped moving. It stays put around 2,500 RPMs, even on startup. The bottom left LED on the revolution circle is also out. Everything else on the cluster is working (clock, speedometer, temp, fuel, indicators, etc.).

What's interesting is the LED sometimes flickers on/off when riding, and sometimes the needle flicks up randomly (but I haven't seen it do that in awhile).

I pulled some pictures from Google to help show the problem. The attached picture shows the LED I'm referring to.



Any ideas? I'm thinking if it was a fuse, more things would be broken than just the needle?

Last edited by daaango; 10-10-2012 at 12:12 AM. Reason: updated picture
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post #2 of 23 (permalink) Old 10-10-2012, 12:51 AM
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Perhaps the LED that has stopped working has come loose and is now blocking needle movement? Does the needle seem to want to move at all? And is it still stuck in the same spot while powered down?


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-'08 600RR (07 blue and silver with white lowers and tail) Stolen
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Quote:
Originally Posted by stormy View Post
To use it in a sentence
In other words displaying interest and or admiration or as you put it "leg humping" is so fouled by your judgement that you're statement is both dehumanizing and so lacking in morality that it brings shame upon you.

the rest of us who haven't committed such obvious acts of player hating are full of win, however.
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post #3 of 23 (permalink) Old 10-10-2012, 01:23 AM
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i've had worse when my gauge acted funny, first the tach needle stopped moving then all of the digital displays started screwing around until it no longer had any display & this was a couple of days before my race, tried to fix it by removing the gauge cleaning the internals & connections but still no luck so i just said fack it & left it alone, a couple of hours later the damn thing all worked again.

i thought i was going to buy a new gauge, very mystifying.


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post #4 of 23 (permalink) Old 10-10-2012, 01:59 AM Thread Starter
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Lately, the needle has been staying at the same spot, doesn't matter if it's on or off. It vibrates a little when riding, but not enough to move it. A few weeks ago it would randomly jerk up and down, but I haven't seen it do that in awhile.

It's weird because the needle stays around 2 even when powered off, instead of just hanging loosely at 0. The needle also doesn't even budge when starting up.

The LED doesn't look loose or anything, and it's definitely not blocking the needle.

Last edited by daaango; 10-10-2012 at 02:03 AM.
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post #5 of 23 (permalink) Old 10-10-2012, 11:14 AM
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Does the needle swing all the way up when you turn on the bike? The normal cycle through, as the speed goes all the way as well?

Try checking the back of the gauges to make sure everything is plugged in all the way then check each wire, maybe a wire got loose.

I had the same problem, the needle would swing all the way up then nothing when I rev'd the bike. It was an ECU issue for me, replaced it and worked fine. Try seeing if you know anyone and switch gauges and ECU.
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post #6 of 23 (permalink) Old 10-10-2012, 11:18 AM Thread Starter
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Nope, when starting up, the needle stays fixed :/
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post #7 of 23 (permalink) Old 10-10-2012, 07:26 PM
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ecu issue? damn i hope not because if it happened to me i'll have to replace the entire wiring harness & switches because i have HISS.


2003 CBR 600RR JDM
HRC ECU AMA spec
HRC radiator
WP 4618 rear shock
WP 1508 steering damper
Ohlins 0.90 N/mm fork springs
Overrev tuned fork cartridges
Akrapovic Evo Carbon FS
Dynojet PCV WB2 LCD200
AFAM 15/47 sprockets
DID VX2 520 gold chain
Brembo 19RCS MC
HEL brakelines
SBS RS pads
Euro Racing riser plates & lever
HM RL Annitori quickshifter
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post #8 of 23 (permalink) Old 10-10-2012, 07:52 PM
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As far as know the ECU is nearly indestructible! If its anything it's not that! So if it is you are a one of! The ECU is just a translator, if anything it would relate info incorrectly but even then it would manifest in other areas as well! For instance a rev needle error would also affect gas mileage and result in back fire etc.


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-'08 600RR (07 blue and silver with white lowers and tail) Stolen
-'10 Ducati 848 Dark (DARK)


Quote:
Originally Posted by stormy View Post
To use it in a sentence
In other words displaying interest and or admiration or as you put it "leg humping" is so fouled by your judgement that you're statement is both dehumanizing and so lacking in morality that it brings shame upon you.

the rest of us who haven't committed such obvious acts of player hating are full of win, however.
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post #9 of 23 (permalink) Old 10-10-2012, 11:01 PM Thread Starter
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Thanks for the help so far everyone!

Do you think maybe the ECU came a little loose? I won't be able to work on it until the weekend, but yesterday I took the windscreen off and tried to push the plug in on the gauge. No luck.

Might try to take off the front fairing to get a better looksie of everything...
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post #10 of 23 (permalink) Old 10-11-2012, 07:41 PM
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impossible for the ECU to get loose with how the sockets are connected, try getting a can of electronic contact cleaner & spray the connections going to the gauge & ECU, let dry & plug them in again, cross your fingers.


2003 CBR 600RR JDM
HRC ECU AMA spec
HRC radiator
WP 4618 rear shock
WP 1508 steering damper
Ohlins 0.90 N/mm fork springs
Overrev tuned fork cartridges
Akrapovic Evo Carbon FS
Dynojet PCV WB2 LCD200
AFAM 15/47 sprockets
DID VX2 520 gold chain
Brembo 19RCS MC
HEL brakelines
SBS RS pads
Euro Racing riser plates & lever
HM RL Annitori quickshifter
EVR CTS slipper clutch
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post #11 of 23 (permalink) Old 10-11-2012, 09:20 PM
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check fuses..similar think happened to my 03 and i figured out it was a fuse blown
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post #12 of 23 (permalink) Old 10-12-2012, 02:03 AM Thread Starter
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Quote:
Originally Posted by ceebeyar600 View Post
check fuses..similar think happened to my 03 and i figured out it was a fuse blown
would a blown fuse only affect a LED and the needle? I believe I was reading somewhere that the fuse related to the gauge controlled multiple things...

I'll still take a look tomorrow, and maybe take a look at the ECU :/
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post #13 of 23 (permalink) Old 10-12-2012, 02:37 AM
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a blown fuse would disable the gauge altogether.


2003 CBR 600RR JDM
HRC ECU AMA spec
HRC radiator
WP 4618 rear shock
WP 1508 steering damper
Ohlins 0.90 N/mm fork springs
Overrev tuned fork cartridges
Akrapovic Evo Carbon FS
Dynojet PCV WB2 LCD200
AFAM 15/47 sprockets
DID VX2 520 gold chain
Brembo 19RCS MC
HEL brakelines
SBS RS pads
Euro Racing riser plates & lever
HM RL Annitori quickshifter
EVR CTS slipper clutch
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post #14 of 23 (permalink) Old 10-17-2012, 07:15 PM
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Are the LEDs in your cluster stock(orange) or changed in color like the one in the picture? If they have been changed, it is likely they unsoldered the tach needle. May have not gotten a good solder joint when reinstalling.

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post #15 of 23 (permalink) Old 10-26-2012, 10:16 PM Thread Starter
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I asked the previous owner and looks like he changed the LEDs to red and white. I'll take a picture as soon as I get reunited with the bike. Damn... what a hassle lol
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post #16 of 23 (permalink) Old 10-27-2012, 06:58 PM
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Ok, keep us posted. If they have been changed, its either botched, or just not reassembled properly.

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post #17 of 23 (permalink) Old 10-27-2012, 10:10 PM
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Looks like it has been modified. I'm not sure how people change the color like that but if you have to solder LEDs to the board, that is very easy to **** up. Hehe I had a very similar issue, it ended up being that two wires were pinched in the middle of the harness. Honda uses incredibly cheap wiring.

- Christopher, 2007 Blue/Silver CBR600RR - Stock
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post #18 of 23 (permalink) Old 10-30-2012, 11:34 PM Thread Starter
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Sorry for the wait, but here's the picture of the cluster



Needle stays in that position no matter what now, but speedometer registers fine.

As you can see, the bottom left LED is out. It was working when I was about to take the picture, but went out right before I pressed the shutter. It seems to do what it wants.
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post #19 of 23 (permalink) Old 11-01-2012, 10:37 PM
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My first guess is the cluster board is messed up because it was improperly soldered. Those modifications have to be done extremely delicately. Other than that it could be wiring. Try taking off a couple fairings and wiggling the harness.

- Christopher, 2007 Blue/Silver CBR600RR - Stock
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post #20 of 23 (permalink) Old 11-02-2012, 07:58 AM
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Another thing to consider is that something on the circuit board may be shorting out. Check for any solder that might be shorting out two or more traces on the circuit board. The person that did this mod might have accidentaly gotten solder on the board where it shouldn't be.

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post #21 of 23 (permalink) Old 11-08-2012, 03:57 PM
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I had this happen to me with the needle after a cluster mod for LEDs. There are two ways to pull the needle off when you do the MOD. You can de-solder it or pull the needle itself off. Most people de-solder the needle. If the 4 solder joints are not redone correctly then the joints will come loose. This may be your issue. I have attached a link for reference.

DIY: Change Color of Guage Cluster 07-08

White 07 CBR600rr
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post #22 of 23 (permalink) Old 11-08-2012, 04:44 PM
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I run UsSpeedo a speedometer shop in flint Michigan. my guess is that whoever did the led swap either did a bad job desoldering the tach motor and broke one of the leads or pulled the needle off of the motor and pulled the metal stem out of it. either way the fix is to replace the motor. i can repair it for $125. ill fix or replace the leds that aren't working inside while i'm in there.

you can pm me or call our office and ask for Ray.
(810) 244-0909
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post #23 of 23 (permalink) Old 12-05-2012, 03:05 PM Thread Starter
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I finally took it apart this past weekend and found that the needle wasn't connected all that well... all I had to do with solder it back on. Found a lot of other problems, but they all seem manageable. As for the led, I put some solder on it but it's still flickering. Probably just going to try and replace it later down the road...

Thanks for the help everyone!

edit: Also, the hid ballast was pretty messed up, it shorted out my front left turn signal and was causing problems with my low beams. Not sure if it was a related problem, but meh

Last edited by daaango; 12-05-2012 at 03:08 PM.
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