The oxygen sensor on the '06+ includes a heating element which the earlier FJR sensors didn't have. This could be the reason for the lower fast idle rpm on the '06+. With the heating element the sensor can function properly while the engine is heating up to normal operating temperature.
Fast Idle unit on throttle bodies
- Thread starter RadioHowie
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mcatrophy
Privileged to ride a 2018 FJR1300AS
My '06 starts at about 1500 or 1600 on the dial. When new it never clunked, now it does clunk two or three times during its idle warm-up. (I like to get a bar on before moving off, the clutch engagement speed is embarrassingly high when cold.)
Due for a service, that may help.
RadioHowie
I Miss Beemerdons!
And that could be a simple side effect of plugs that aren't 100%, etc., that could be rectified by...
I'd be curious if the service eased the clunk.
big ears
Well-known member
My 08 cold fast idle is about1500 and it sometimes clunks a few times. I'll be trying that screw if I can find it, to raise the idle as Howie says. No hurry though, mine runs smooth as silk after about 20 seconds of warm up.
Interesting point. Which won't help those with PC III(V) units that have the O2 sensor unplugged.
mcatrophy
Privileged to ride a 2018 FJR1300AS
QUOTE (RadioHowie @ Aug 19 2009, 03:31 PM) <{POST_SNAPBACK}>
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QUOTE
Due for a service, that may help.
I'd be curious if the service eased the clunk.
I'll let you know next week (booked into my dealer next Wednesday).
Of course I'd service it myself, but SWMBO has me re-doingour her kitchen.
(Click any image for larger view)
...
QUOTE
Due for a service, that may help.
I'd be curious if the service eased the clunk.
I'll let you know next week (booked into my dealer next Wednesday).
Of course I'd service it myself, but SWMBO has me re-doing
(Click any image for larger view)
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Bustanut joker
Well-known member
For RadioHowie and all the others out there that may need to deal with the Clueless. Save this to your downloads file and print some copies to keep with you.
[/quote
This is perfect!!! Thanks Eric, I'm printing two off and taking them to Plant management and our owners tomorrow..
I'll have to let ya know how I works out :devil:
:jester:
mcatrophy
Privileged to ride a 2018 FJR1300AS
And the answer is ...
No clunking on the warm-up.
But it's quite warm (for the UK), and the mechanic says he checked the plugs, but didn't change them.
The fast idle isn't particularly smooth (never has been), always has had an irregular note, sounds like it's a bit too lean for perfect running, but better than before the service. I can't think of any reason why the idle should change after a "light" service, so I class the result as inconclusive.
Going to Scotland for a week on Sunday, I'll see how it runs in a colder, wetter climate.
Guess I missed this thread first time through.
I'm guessing that the Yamahar designers (they couldn't be engineers and still make so many mistakes) must have intentionally lowered the fast idle on 2nd gens to accommodate the automagic clutch version.
2nd gen non-AEs may like their bikes better with a faster high idle. Anyone find the screw and crank it yet?
Also, running fuel injection closed loop (with the O2 sensor) sooner is what a heated O2 sensor does for you. That would effect idle air/fuel richness, but have no effect on idle speed.
I'm guessing that the Yamahar designers (they couldn't be engineers and still make so many mistakes) must have intentionally lowered the fast idle on 2nd gens to accommodate the automagic clutch version.
2nd gen non-AEs may like their bikes better with a faster high idle. Anyone find the screw and crank it yet?
Also, running fuel injection closed loop (with the O2 sensor) sooner is what a heated O2 sensor does for you. That would effect idle air/fuel richness, but have no effect on idle speed.
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Excellent post Howie.
Now for the $64K question: Which way do you turn said screw, for a faster idle?
Now for the $64K question: Which way do you turn said screw, for a faster idle?
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mcatrophy
Privileged to ride a 2018 FJR1300AS
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Grumpy
Well-known member
that's the funniest thing I've seen in a very long time.....Thank You!For RadioHowie and all the others out there that may need to deal with the Clueless. Save this to your downloads file and print some copies to keep with you.
RadioHowie
I Miss Beemerdons!
just roy
Well-known member
i gotta pay more attention. i never noticed the threads with the idle complaints. when i got my bike it wasn't a problem but i ride as much as possible here in upstate NY. and it gets cold. 20 deg is my limit without heated gear. but when winter came last year the bike couldn't be ridden until it warmed up and i didn't feel that was normal for a fi motor. my high idle was 1400-1500 rpm. after searching i found that screw and turned it in one turn #2 Phillips now idle when cold is 2100 rpm and bike can be ridden as soon as it starts. although if its real cold i wait a few seconds for the oil to get going. i couldn't get to the screw without serious disassembly on my gen2.
Bam!!
Thanks for the confirmation, Roy.
Thanks for the confirmation, Roy.
GPRIDER
Well-known member
Roy, was your bike making the clunking noise when the idle was at 1400-1500 cold? Can you remember what all you had to disassemble to get to the screw? I may be trying this myself.
GP
SCRider
Well-known member
Try raising the idle to 2000 with the throttle before you go to the trouble of getting to the screw. I tried that the other day and it ran like crap! Much worse than the normal 1500 fast idle.
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Apples and Oranges. When you crack open the throttle you are also moving the Throttle Position Sensor (TPS), telling the ECU that the throttle plates are now open more. When you adjust the high idle it is moving piston that uncovers a port that bypasses the throttle plates (allows more air) and the TPS still tells the ECU it is at 0% open.
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RadioHowie
I Miss Beemerdons!
ridgerunner88
Well-known member
07 1300A, indicated 1300-1400 cold, 600-700 hot. Bike will die sometimes if I make a really quick stop. Where's that idle adj. at? I probably need to re-synch the throttle body as well.
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