Question about 1999 Yamaha YZF-R6

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99 r6 carb model- Rev counter sticks at 3000rpm and 0rpm

99 r6 carb model- The rev counter sticks at 3000rpm for a couple of seconds, then it drops to 0rpm for a couple of secs then it performs at the normal revs but then repeats this fault procedure as soon as you alter the throttle input. The bike performs perfectly throughout. It does this all the time hot or cold. ive tried to do some research myself and ive heard it could be a possible throttle position fault, im a car mechanic myself but its a different gravy. ive got me a workshop manual and read about adjusting the TPS and my uncles gonna balance the carbs. do you agree with this course of action? any help or advice would be much appreciated. thankyou very much

regards wayne

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  • ffgg9 May 11, 2010

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  • Yamaha Master
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Hi, Wayne your ECM is generating an engine fault code via the tachometer 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.
http://www.r1-forum.com/forums/101-98-99-r1-mechanical-help/211207-98-r1-rev-counter-error-revs-go-up-3000rpm.html
Yamaha Fault Codes motorcycle manuals
1999 2002 Yamaha YZF R6 Service Manual R6 Moto Data Project
OEM parts for Yamaha
http://mybikemanuals.com/yamaha/yamaha-yz-owners-manuals

Posted on Sep 28, 2016

6 Suggested Answers

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  • 2 Answers

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Posted on Jan 02, 2017

  • 190 Answers

SOURCE: my 1999 r6 doesnt go when its hot.

sound to me that fuel not vented causing a lean sitution lack of power

check the fuel cap is working proper by allowing air into tank but not out

can try when engine dieing open fuel cap to see if regains power?

Posted on Apr 02, 2009

  • 1 Answer

SOURCE: Rev Counter indicating fault code

been told its something to do with the fuel sender in the tank. i think a wire come adrift, hope this helps, Uni. From Unitracmotorcycles.

Posted on May 22, 2009

  • 3567 Answers

SOURCE: tps part number for yamaha r6

SKU: 4TV-85885-00-00
THROTTLE POSITION SENSOR ASSY Approximately $203.00

Go to the site below where you can see a parts diagram for your specific bike. You will select the actual brand, year, model, etc., once you go to the site. Part numbers and prices are also shown. You can order parts from this site. In the event no price is shown on a particular part, the part is not in stock. I checked and the TPS is in stock.
www.babbittsonline.com/pages/parts/viewbybrandand/parts.aspx

You could Google " motorcycle salvage yamaha " For about $100 they will sell the entire carb ( assuming one is available ). Before I did either option, I suggest you let the shop have a look at the bike. If the TPS is not the problem, you just wasted $200.

Posted on Jun 01, 2009

MakisRC51
  • 408 Answers

SOURCE: yamaha dt 200 won't rev off idle

You should measure the combustion ratio.Maybe piston rings failed.

Posted on Jun 03, 2009

  • 311 Answers

SOURCE: While driving the engine stays at 3000rpm for 2sec and drops

hi,just a thought,if you have had two sets of carbs on it and they have been tuned/balanced and still does it,then it is probably not the carbs causing the problem.check your throttle cable,check it is in good condition with no kinks or tight spots,also check it is not jammed between any other component causing a sticky spot,also,check the freeplay in the cable,you should have around a 1/4 " freeplay at the carbs,with the engine running turn the steering lock to lock,the engine revs shouldn't change..s aticky cable can cause the problem you describe.hope this helps...cheers

Posted on Apr 16, 2010

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Hi, Tom 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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While driving the engine stays at 3000rpm for 2sec and drops


hi,just a thought,if you have had two sets of carbs on it and they have been tuned/balanced and still does it,then it is probably not the carbs causing the problem.check your throttle cable,check it is in good condition with no kinks or tight spots,also check it is not jammed between any other component causing a sticky spot,also,check the freeplay in the cable,you should have around a 1/4 " freeplay at the carbs,with the engine running turn the steering lock to lock,the engine revs shouldn't change..s aticky cable can cause the problem you describe.hope this helps...cheers

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Yamaha dt 200 won't rev off idle


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My 1999 r6 doesnt go when its hot.


sound to me that fuel not vented causing a lean sitution lack of power

check the fuel cap is working proper by allowing air into tank but not out

can try when engine dieing open fuel cap to see if regains power?

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