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I have a 1996 r33 series 2.

Until today it has driven no probs.

Tonight whilst driving the factory tacho in the cluster started to jump around. At a constand 100k's on the freeway i the tacho would show anywhere from 3000 to 9000 rpm. The actual engine revs did not change.

Car has

Stock ecu, injectors etc

Boost controller

3.5" exhaust

r34 gtt smic

so it is a mild car. All mods have been on for a while and no work has been done lately on the car to cause this.

So, any idea's?

Any help would be appreciated.

Thanks

Usually an ignition fault will cause that, however you would have felt the car run shite, if that was the case.

You will have to put a scope onto the tacho output terminal on the ecu and check its output is o.k. If its o.k. it more then likely guage cluster itself. Check the guage ground wires first however. Could be a cracked track on the board, hard to say without looking at it.

Only thoughts I have, others might know more...

sounds weird. Maybe just try resetting the ecu. Un plug the batt terminal and let the car sit for a while, then atatch the the terminal again. I can't garantee that doing this will fix the problem, but it's something to try before taking the cluster out.

min has been having similar issues.

mine just kinda freezes.

like i'm accelerating to 100 but the speedometer stops at 60 and then after a few seconds it just jumps to 100

and while that's happeneing the KM's stop counting as well. The tachometer keeps working as usual however.

Hey dude,

I had very similar problem. (If you have done a search you most likely would have found my thread). The problem for me was within the tacho mechnanism its self, nothing to do with the signal from the ecu. I took the easy way and put a new cluster in, but there are many guage servicing companies out there. Have a look in the yellow pages.

Cheers

Cam

  • 5 months later...

hey,

mine does a similiar thing, try hitting the top of the dash, solves it 90% of the time, mechanic said its a screw that becomes loose if your dash has ever been taken out and not put back in poroperly.

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