com3

APS part number for the 2015 FJ09 = 1MC-85884-00-00
TPS part number for the 2015 FJ09 = 13S-85885-00-00

my question is why are they different part numbers?  it APPEARS as though they're the same part with different numbers... 

also, that same part looks to be the same part as the R6, R1, FJR, and all the 09 makes/models.  

can anyone verify this info?  is the APS and TPS interchangable? thanks!

3 hours ago, skipperT said:

Glad to hear you're not a noob, but I’m going to point out the obvious anyway - you need a digital volt-ohm meter (VOM) to test both sensors. 

If you’re going to take the risk, buy one sensor and install it in each position and test to see if it makes a difference in your running condition. 

Did you remove the camshafts during your other work? Touch the air screws for the sync at all? have you gone back over your other work? Is your fuel fresh? Have you performed a fuel pressure test?

are there any trouble codes stored?

-Skip

The problem arose before ever doing valves and throttle bodies.

It's had this issue for over 10,000 miles. 

I was really hoping there was a resolution to this... I too have the 2500rpm high-idle-hang that happens at random. 

If I cycle the key, it fixes it. If I wait it out, it usually fixes itself after a minute or two. 

On 4/20/2020 at 12:14 PM, skipperT said:

Sure, if you want to throw parts at a problem you haven’t diagnosed yet. But I would start by reading this thread:

 

oh, i read that before i posted.  i'm not a n00b.  (with forums OR wrenching)    

i adjusted the APS the other day....  changed values to 15/14 on diag 14/15 respectively.  no notches on roll-on anywhere in the diag (not to say there isn't an ohms issue [that i don't have a tool for])... surging issue still exists. 

just gonna do it the old fashion way and throw 80 bucks at a freshie and swap em out. *le sigh*

I've been having a lurch issue on my bike the last 10k miles. Did valves, throttle body synch, etc... 

Basically, when I go from 50%+ throttle to 0%, it'll sometimes throw a little extra fuel in and surge forward very briefly. 

Sometimes, if I pull the clutch in when it's having that issue, it'll have a sustained high idle (even well after being fully warmed up) at about 2500rpm. If I cycle the key, it'll go back to normal idle... Usually it'll just correct itself in a minute or two.

The problem has been intermittent...lots of times one ride, no times another ride...

Sometimes I'll go from 0% throttle to 5% throttle and nothing will happen at all for about 1 second, then POW, it feels like 15% throttle.

I suspected TPS/APS...using your diog info on here, it looks as though there are no flat spots, no jumps in numbers... My stock 14 numbers are 17-101 (on the high end of what this thread says it's stock). 15 is 16-100. 

I'm back to being baffled again...should I just buy new tps/aps ?

2 hours ago, betoney said:

I also read the FZ09.org forum daily and there are a few posts with similar issues, either decelerating and the rpms surge or coming to a stop and the bike dying.  The popular belief is a faulty TPS. 

Coincidentally, the same happened with my truck (5-speed) not too long ago, come to a stop light and the rpm would fluctuate +/- 500rpm above or below normal idle.  Swapped the TPS and it idles smooth as silk now.

Mine will sometimes have a high idle too...like, 2200rpm. Sounds like that's in issue! Thanks! 

What ever happened? Tps the culprit? 

I haven't checked mine yet, but in assuming this is my issue as well... 

While riding hard, occasionally I'll go from 50% or more throttle to 0% and the bike will surge/hiccup while slowing as if the throttle had been opened up again briefly. It's driving me crazy. I'm guessing a faulty APS or TPS. 

On 11/26/2019 at 4:30 PM, chitown said:

Noticed that yesterday. The superior red! 

❤️

Thanks! Yeah, I'm Joe. Can you post a picture of the catalog? 

I freggin love my aerostich. Definitely the best street gear I've ever owned (and I've even had a klim badlands suit). 

no trouble codes. it's done it for at least 20 tanks of fuel.  i'll check the hoses when i get a chance...  the tank had NEVER been off prior to when it started doing it... the tank has since been off twice since it started surging.

38K miles, 2015.

46 minutes ago, koth442 said:

Time to flash the ECU?

Throttle body sync?

Valves in spec?

valves and throttle body synch done recently. it was surging before and after.  

Anyone ever have surging issues? 

When romping around, several times per ride lately, I'll go to 0% throttle and I'll get a small hiccup that surges forward a little bit. 

I've also noticed that I'll pull over, clutch in, and I'll have a high idle at times as well too...sitting around 2k rpm. 

Once, about a week ago, I went from 0% throttle to 5% throttle and it almost felt as if the engine died for about 1 second before responding to my throttle input. 

Thoughts? 

3 hours ago, mike said:

It sounds like you are not going to the track with the FJ given your experience. I weigh 260 lb and can ride my GT rather aggressively without problems. The stock suspension definitely could use upgrading but for normal use I would think you would be OK until you can afford the improvements. It all depends how hard you are going to push it.

This was while not even riding aggressively... 100% due to terrible suspension:

@betoney I'm in norcal all the time. Currently I'm at Laguna Seca raceway...Weds I'll be in Sacramento...this weekend I'll be at Oregon raceway park...next weekend I'll be at Pacific raceways in Washington...after that back to norcal for a week or two 

The stock suspension isn't even adequate for me alone @ 225lbs. It's terrible.

You're looking at around $1500 for a decent setup. 

I feel like I'd destroy those

3 hours ago, koth442 said:

Here for the comments, I don't have any cool pics on my FJ. 

Best go get some! 

no biggie...if you over fill it, it'll spooge out excess into your air box for safe keeping later.

of all the bikes i've ever owned, the FJ has the LEAST amount of ground clearance.  i feel like i start hitting hard parts at about 30 degrees of lean.  it's gotten better over time, as i've worn out most of my center stand. haha. 

what the heck is a "damped sprocket"?  in my 28 years of riding motorcycles, this is a term i've NEVER heard before.

99% of the riding i've done in the last 2 years (even on the racetrack) is 2 up with my girlfriend. i'm 6'3 225lbs and she's 5'7 130lbs... stock springs on the FJ DO NOT cut it. i put a penske shock on the rear set up for 460 lbs (i always have a top case on and i ride like a damned hooligan)...i needed it stiff. i also put stiffer springs up front and revalved the forks.

37 minutes ago, foxtrot722 said:

I must agree also, 

My personal experience says "highly disagree". 

7 hours ago, koth442 said:

@com3, ever triggered your TCS at speed?

Honestly, I turn tcs off every single time I start the bike. The few times I've actually had it on (two up at the track in the rain), it feels very rudimentary when it kicks in. There's definitely a delay. It's not refined like bazzaz units or whatever on race bikes that I ride all the time. 

Also, in slow speed nasty conditions (lots of water on the ground or dirt or ice), the tcs is actually detrimental. I almost pitched it away while two up when a flash flood of 6 inch deep water/hail came down hwy 4 over the Sierra Nevada while doing 15mph around a steep uphill hair pin.  Tcs caused the motor to stall completely. I had to put both feet down, front tire locked, and slid backwards about 15ft to the edge of the road by the cliff before I got it stopped.