07 and TPS

[Silent]

I've been having problems on and off with my '07 where I'd roll on the throttle and nothing would happen. Then in a flash it would kick in. This could be very dangerous in a corner situation where you're leaned well in. Now it doesn't do this all the time, just rarely.

My local dealer thinks it may be the TPS and I'm taking the bike in tomorrow morning to have the adjustment checked. My main question here is if any other '07 (or '06) owners have had problems with the TPS since the "fix"?

 

[Rickster]

have you farkled anything that may affect this?

can you describe the problem better? (like how far you're twisting the throttle with no response, and how long is a 'flash')

 

[Silent]

have you farkled anything that may affect this?
can you describe the problem better? (like how far you're twisting the throttle with no response, and how long is a 'flash')

Straight stock, warm engine. It acts like a hesitation. Throttle % is kinda hard to say, it's up in the 3k-4k RPM range usually. If the bike is shut down for 3-5 seconds to re-boot the computer it runs fine after. It feels like the computer is saying, as you roll on the throttle, no fuel, no fuel, no fuel, then catching itself and saying fuel now! The transition from hesitation to 100% of where the throttle is actually at is instantaneous. Makes for exciting twisties :dribble:

The bikes done it under 600 miles on the clock, and upwards of 3500 on the clock. Currently 4k. I've tried to ride through it, but it continues to act up until you stop and 'reboot'.

 

[TexBahn]

have you farkled anything that may affect this?
can you describe the problem better? (like how far you're twisting the throttle with no response, and how long is a 'flash')

Straight stock, warm engine. It acts like a hesitation. Throttle % is kinda hard to say, it's up in the 3k-4k RPM range usually. If the bike is shut down for 3-5 seconds to re-boot the computer it runs fine after. It feels like the computer is saying, as you roll on the throttle, no fuel, no fuel, no fuel, then catching itself and saying fuel now! The transition from hesitation to 100% of where the throttle is actually at is instantaneous. Makes for exciting twisties :dribble:

The bikes done it under 600 miles on the clock, and upwards of 3500 on the clock. Currently 4k. I've tried to ride through it, but it continues to act up until you stop and 'reboot'.

A fellow came in to the dealership the other day complaining of something similar. He hadn't had his first service, yet. Upon thinking about it and observing that itty-bit of hesitation, we deduced that it was most likely unsynchronized throttle bodies. Combine that with the lean conditions that Yamaha sends out the bikes in - and you may get some hesitation off throttle and less than optimal smoothness.

Did you have the throttle bodies synched at 500 miles? Have you opted for the CO adjustment (which did some amazing things for my '03 FJR)?

In case I'm not completely understanding your condition, I'd also like to point out that for emissions, the 4,000 to 5,000 range is the leanest RPM range for the bike, though it may have been remapped in '06.

The bike also does seem to produce a LOT more power once you pass 4,500 to 5,000 RPMs, even though it will pull pretty hard in any gear. You '06+ guys got taller gearing, and may make it feel ever so slightly less confident.

Also, what gear are you pulling this 3,000 to 4,000 RPMs in? Maybe you just need to run slightly higher RPMs (lower gears)?

 

[TruWrecks]

I have noticed a similar issue. I found mine getting the "no throttle" response pulling a slight hill. I was in both 4th and 5th gears, running between 2800 and 4000 RPMs. I would twist the throttle very slowly to add just a small amount of fuel. The bike would maintain the exact same speed until I added about 20% more throttle, then it would feel like something bumped the back of the bike and it would lunge forward! Not very good since I was riding in near freezing temps. :blink:

I'll be syncing the TB's this week. I don't think that's the issue, but I'll try it anyway. I'm also going to talk to my dealer tomorrow to see if they know what's going on.

 

[dean]

it's been nagging at me that when i took my 07fjr in to the yamaha dealer for the 600 mile service, the tech said a sync was not needed unless the idle was off or acting up; this despite my citing it in the maintenance schedule. i'm going to call yamaha corporate and see what their opinion is. i've already written in on my copy of the receipt that the service dep't refused to do the synch, but i'd like to hear more...

 

[greg97224]

My 07 is doing the exact same thing. I haven't had the TBS yet. The tec at my dealer talked to the Yamaha tec, (what ever that means), and was told TBS is very important first of all. Also right around 3500 RPM, is where the bike is leanest.

Also, PC III would help tremendousely with the situation.

 

[Silent]

Did you have the throttle bodies synched at 500 miles? Have you opted for the CO adjustment (which did some amazing things for my '03 FJR)?
In case I'm not completely understanding your condition, I'd also like to point out that for emissions, the 4,000 to 5,000 range is the leanest RPM range for the bike, though it may have been remapped in '06.

The bike also does seem to produce a LOT more power once you pass 4,500 to 5,000 RPMs, even though it will pull pretty hard in any gear. You '06+ guys got taller gearing, and may make it feel ever so slightly less confident.

Also, what gear are you pulling this 3,000 to 4,000 RPMs in? Maybe you just need to run slightly higher RPMs (lower gears)?

The TBS was preformed at 600 miles. I am thinking about checking it again myself tho. I wouldn't think the TBS would be the culprit since it's an intermitant problem.

I've done the Barbarian mod and ran at +7, then tuned it down to +4, and finnaly tuned it back to bone stock. The problem will rear it's head reguardless, but again only once or twice a week maybe. Gear doesn't seem to matter, it's done it in 2nd, 3rd, 4th, and 5th.

 

[dean]

well, today i called big mama yamaha in california, they redirected me to a customer service-type 800 number . **side note: is it just me, or do they make it pretty difficult to find a way to contact big mama yamaha? i couldn't find it on the yamaha motorcycle site, had to click on their "career opportunities", which gave me an address where to send in a job application, and googled that address to get their corporate phone number**

so i called the 800 number, and they were very pleasant and understanding. i advised my manual says at 600 miles one of the maintenance requirements is the throttle body sync; and when i took my fjr in to the yamaha dealer, the shop manager said that's not necessary unless the idle is off; i pointed out it was in the manual to do the sync, he said it wasn't necessary unless the idle was off. i said to the customer service person now that i have my bike back, i've thought abou this, and i didn't want to void my warranty by not doing what yamaha is telling me i need to do. i knew this wasn't completely accurate, as i felt that as long as i could state and show that i took it in for the 600 mi service, i couldn't be held at fault it that shop failed to do what they were supposed to, but it at least made me sound like a super concerned kinda guy. ( : i then used the improvised example that the manual says change the oil at 600 miles, and if i take it to the dealer, and he says "oh, you don't need to change it, it's not dirty", it's the same thing, i don't care if it's dirty or not, the manual says to do it, so do it! i pretty much said it with that much "animation'. they agreed, what yamaha says in the manual is what should be done. she then asked to put me on hold (800 number, remember) so she could contact the local dealer service manager to make this right; got back with me, and said he was out, but would speak with him tomorrow, make the arrangements to get this done right, and call me back tomorrow.

what i can't understand is why i'm fighting so hard to give a dealership more of my money (as i'm sure they're going to charge me more for this "extra" work); who knows, maybe corporate yamaha will squeeze them to make the customer happy and not charge me for it. regardless, i'll make sure to put those little marks on the bolts to make sure they've done the work. it'd be nice if corporate yamaha told them to be extry nice to me, and so when i bring the bike in, they let me watch to make sure they do it. um, yeah, right. ( :

 

[dean]

i spoke with yamaha corporate again today. the customer service rep said she called my local yamaha dealer, and confirmed the service mgr said they don't, and won't, do the throttle position synch unless it needs it; she said this was despite her pointing out it says it in the manual, she said he continually said they won't do it unless it's needed, otherwise they're adjusting something that isn't necessary. i said to her that my question would be "what are you using as a determination that it does, or does not, need to be synch'ed", she agreed she couldn't answer that question. i pointed out my receipt for the 600 mile service only indicated that they changed out the engine oil and filter, and the rear oil, that i had not even mentioned to the customer service yamaha rep on my original call that they apparently didn't lube the cables per maintenance schedule or check the cables, that that was something i could do, but it again showed this dealership really didn't care what yamaha said. she understood, and said they would cover the cost of my taking it to another dealership for the synchronization.

i then called another dealership, and asked at the 600 mile service if they did the tps, he said they did. i then explained to him my situation. he confessed that in a way, he did agree, that usually it's not an issue, and that it's more of something that yamaha puts in the manual because they're anal retentive. he said unless you're noticing an idle problem, it's usually something that's not needed to be done.

so who knows what the hell i'll do now...

 

[ionbeam]

When speaking with Yamaha and your dealer your terms were consistent and correct, right?

[SIZE=14pt] TBS[/SIZE] = Throttle Body Sync -- This is what is called out as part of the 600 mile service and should at least be checked during the service.

[SIZE=14pt] TPS[/SIZE] = Throttle Position Sensor -- This is a sensor that the ECU uses to tell what position the throttle plates are in and the rate of change. The sensor is adjustable but it shouldn't need checking or adjusting at any point. The TPS is a set and forget sensor, with the set being done at the factory.

From your recount of what was said, it almost sounds like they were talking about the Sensor and not the Sync.

 

[Silent]

My responses have all been about the TPS (Throttle Possition Sensor) However, I am still going to check my TBS (Throttle Body Sync)

 

[dean]

When speaking with Yamaha and your dealer your terms were consistent and correct, right?
[SIZE=14pt] TBS[/SIZE] = Throttle Body Sync -- This is what is called out as part of the 600 mile service and should at least be checked during the service.

[SIZE=14pt] TPS[/SIZE] = Throttle Position Sensor -- This is a sensor that the ECU uses to tell what position the throttle plates are in and the rate of change. The sensor is adjustable but it shouldn't need checking or adjusting at any point. The TPS is a set and forget sensor, with the set being done at the factory.

From your recount of what was said, it almost sounds like they were talking about the Sensor and not the Sync.

you're right, i got sidetracked when i called the second dealership. sounds like he was confused, too, as i initially spoke of the throttle body synch, and at some point he started referring to it as the throttle position maintenance check. i'll call them back on monday when they've opened for a clarification. thanks for the redirection.