Throttle Position Sensor

1 reply to this topic
  • jdd123

Posted July 18, 2004 - 07:38 AM


While waiting for a leaner needle to arrive, I've been checking my electrical system and jetting. I am rich on the needle and none of the clip positions got rid of it. Piolt and main are ok. I read where someone disconnected their TPS. For grins, I tried it and the response improved significantly. There was still a little richness left over. What happened? What did the CDI do to make mid range run leaner?

I went through all the electrical checks and the TPS was only out of tolerance on the full throttle coil reading 3.88 kohms at full throttle rather than manuals range for 4 to 6 kohms. Since the bike is new, should I have the shop replace it?

I reconnected the TPS.

Visit the ThumperTalk Store for the lowest prices on motorcycle / ATV parts and accessories - Guaranteed
  • yamaharichey

Posted July 18, 2004 - 04:48 PM


Check out my post in the jetting forum, a lot of us WR 450 guys are disconnecting the TPS and what a difference were getting.

Related Content


Yamaha YZ450F 2017 by Chris.GVS

Yamaha YZ450F 2017
  • - - - - -
  • 0 reviews

yz250x vs 450 4t comparisons (preferably desert riding) needed by JakeNorthrupYZ450F

Dirt Bike   Make / Model Specific   Yamaha   Yamaha 2-Stroke
  • 9 replies

2016 YZ450 by CaptainKnobby

Dirt Bike   Dirt Bike Technical Forums   Suspension
  • Hot  59 replies

First Hare scramble tips by dhend8

Dirt Bike   General Dirt Bike Forums   General Dirt Bike Discussion
  • Hot  33 replies
WR Camshaft Swap Info - last post by jamesm113

WR Camshaft Swap Info

  • 0 replies

Join Our Community!

Even if you don't want to post, registered members get access to tools that make finding & following the good stuff easier.

If you enjoyed reading about "" here in the ThumperTalk archive, you'll LOVE our community. Come join ThumperTalk today!

The views and opinions expressed on this page are strictly those of the author, and have not been reviewed or approved by ThumperTalk.