Question about 1997 Yamaha YZF Thunder ace 1000 R

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I have a thunderace and the rev counter keeps jumping from 0 t0 7000 revs

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7000 rpm is a self diagnostic code that either your exup valve is not being detected or the valve is locked up and not moving. If you put a header on your bike and took over the exup valve servo motor, you are going to have to put it back on. It also changes the mapping of the ECU and will not let it rev to redline when the Exup servo motor is missing.

Posted on Nov 06, 2009

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Posted on Jan 02, 2017

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Revcounter keeps jumping up to just under 3,000 then down to zero all the time


Hi, Anonymous for this scenario you will need your service/owners manual if you can't find the first and best tool you ever bought for your Yamaha, despair not, for a mere $0 you can download another one. For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have a nice day.
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1 Answer

Thunderace rev counter goes up to 3000rpm and back to0rpm


Mine is a Yamaha YZF1000 1996
Taco code 3 fault is related to the TPS Sensor located on the RHS outter carburettor.
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Taco code 9 relates to the fuel level sensor & the cable under the tank unplugged.
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1 Answer

2000 XJ 900 S Diversion: REV COUNTER JUMPS TO 10000 REVS...


Hi, Anonymous for this scenario you will need your service/owners manual if you can't find the first and best tool you ever bought for your Yamaha, despair not, for a mere zero $ you can download another one. For more information about your issue and valuable "Free" downloads that you will need please click on the blue links below. Good luck and have a wonderful day.
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I'm having a problem with my yamaha yzf1000 thunderace when riding it, the rev counter is switching from the revs I am doing up to 7000, down to 4000 and back to zero, then to normal revs and repeating. I...


This is a diagnostic code telling you there is a problem with the exup valve and/or servo, cables etc. Take the little cover off the exup valve and check the pulley is rotating about 1/3rd of a turn when the revs hit more than 4000 revs. It might be partially seized or a broken cable or problems with the servo. The mechanical bits are easy to fix.

Feb 18, 2010 | 1997 Yamaha YZF Thunder ace 1000 R

1 Answer

I have a 96 HONDA CRV 156k's on the clock.Recently serviced and cambelt replaced. Driving yesterday at 100km/hr the ABS light flashed three times, then the speedo dropped to 0 km/h the rev counter dropped...


Check the wiring for loose or corroded insulation. Check also the terminals and the connections. Inspect the velocity sensor and the cam position sensor it may have been moved when changing belts

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could be needing replace best to check with the main dealer

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Rev counter jumps whilst idling and then engine cuts out


Your problem sounds as if the thermo sensor....which controls the air fuel ratio when engine is cold....is faulty. It is a common fault on this model.
This is not an expensive part, and takes only a short time to fit.
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1 Answer

Rev counter jumps when idling and then engine cuts out


sounds like the idle speed sensor,if your rpm's are idling up and down

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Jerking


Fuel filter or vacuum leak good place to start. Good luck and have a good day.

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