Forums
New posts
Search forums
What's new
New posts
New media
New media comments
Latest activity
Media
New media
New comments
Search media
Members
Registered members
Current visitors
Log in
Register
What's new
Search
Search
Search titles only
By:
New posts
Search forums
Menu
Log in
Register
Install the app
Install
FJR Motorcycle Forums
Technical & Mechanical Problems
Altitude issue -
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Help Support Yamaha FJR Motorcycle Forum:
This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.
Message
<blockquote data-quote="ionbeam" data-source="post: 795128" data-attributes="member: 277"><p>LOL, I know what you mean about Mt Washington! That is well outside of the range of 'normal'.</p><p></p><p>KD has already had the ECU recall done so there should have been no need to either vary the throttle or reset the ECU by means of key off/on again to force the ECU to re-read the intake pressure sensor.</p><p></p><p>The ECU should automatically compensate for altitude so that the engine does not run rich and the fact that it did not compensate is really the conundrum here. One reason the ECU may not have compensated and the most straight forward is the intake pressure sensor circuit had a glitch someplace. Followed by our speculation the the ECU barfed the reading due to the pre-recall software glitch. Followed by the gonzo suggestion that the ECU read the wrong coolant temperature and was running the Cold Run FI map. All three scenarios can lead to a very rich FI trim and the failure symptoms are consistent with a rich condition.</p></blockquote><p></p>
[QUOTE="ionbeam, post: 795128, member: 277"] LOL, I know what you mean about Mt Washington! That is well outside of the range of 'normal'. KD has already had the ECU recall done so there should have been no need to either vary the throttle or reset the ECU by means of key off/on again to force the ECU to re-read the intake pressure sensor. The ECU should automatically compensate for altitude so that the engine does not run rich and the fact that it did not compensate is really the conundrum here. One reason the ECU may not have compensated and the most straight forward is the intake pressure sensor circuit had a glitch someplace. Followed by our speculation the the ECU barfed the reading due to the pre-recall software glitch. Followed by the gonzo suggestion that the ECU read the wrong coolant temperature and was running the Cold Run FI map. All three scenarios can lead to a very rich FI trim and the failure symptoms are consistent with a rich condition. [/QUOTE]
Insert quotes…
Verification
Post reply
FJR Motorcycle Forums
Technical & Mechanical Problems
Altitude issue -
Top