TPS Recall

[goose]

Hey folks,

I got my 03 recalled for a TPS replacement the other day. It started playing up on the way back from the GeePee at Phillip Island, y'know, cutting out at anywhere on the rev range. Pretty interesting when cranked over on a mountain road! Anyway, got it replaced and the bike sounded different. The only thing I can compare it to was when I owned a warmed over car that used to tick over 'on-cam' as it were. It also seemed to run warmer than before. These problems I could live with but she has also started to do what i would call 'pre-firing' (not sure if there is a technical description), sounds like the donk is firing before the piston gets to the top of its stroke. And it surges worse than it did before, to the point that the girl wont ride with me.

I've taken the beast back to the shop but the mechanics say its all OK. I dont believe them! Has anyone had this problem after getting the TPS replaced under factory recall? I want my girl back on the bike, my back is getting cold.

 

[ionbeam]

There is a rubber seal for the TPS shaft that is supposed to prevent a vacuum leak, if not placed correctly could cause your symptoms.

 

[tontofjr]

Since my TPS recall was done the bike sounds rough . Took it back to dealer and he said no problem found .

Today went to another dealer and guess what ,first thing he says is TPS is set outside the tolerance .

When throttle is wide open in diagnostic mode limit should be 100 mine came up 102 .

Now all my work will be done at 2nd dealer , the other one was just a fitter not a mechanic.

 

[radman]

The TPS is set at idle, should be 15-17 at idle, 97-100 at WFO. A 102 at WFO doesn't necessarily indicate a problem. The closed throttle setting is the more important of the two. A 15 at idle could mean a 97 wide open, a 17 could mean a 102. Check it.

 

[ionbeam]

When throttle is wide open in diagnostic mode limit should be 100 mine came up 102

Yes, 102 is out of spec but that amount of adjustment error is very trivial and should not make any difference in the way your bike runs. To correct the reading the two screws that hold the TPS have to be loosened and the whole sensor gets rotated an imperceptible amount. If you bike runs better after the adjustment it is because something else inadvertently got bumped or tweaked in the process. IMO

The TPS should read ~16 on the low end and 97-100 on the top end. The ECU takes this to mean 16% of max throttle opening (idle) to 100% throttle opening (throttle pulley is on the stops). Your reading of 102 would be interpreted by the ECU as 102% percent throttle opening and would effect you bike only when the throttle is pinned open. Even at that I'm pretty sure that the ECU would clip the reading to 100%.

Edited: Dang, that Rad is a fast typin' fool with a hot web connection! I was typing while he was posting. At least there is a consensus in our answers.

 

[goose]

Thanks guys,

I've checked the settings and they look like they're inside tolerance. I'll have a look at the seal though. I've spoken to the dealer and he says that he has a few Effys doing the same thing after replacement of the TPS and that he's spoken to Yamaha who said it was a mapping issue. I'm thinking I got the brush-off. either way, I'm thinking that the bike should at least come back better than it went in. I've even thought that as the symptoms are an exageration of what the recall was supposed to fix, perhaps they put in the wrong sensor (although the readings look OK).......

 

[Bounce]

Just got the bike back today from TPS replacement. Only about 50 miles on it while going to customer sites today. So far, so good.

 

[sgoat]

Got about 300 mi. after TPS replacement and all is well. Noticed my idle was about 200 RPM higher when I got it back, but the bike runs very smooth throughout the RPM range.

 

[JJones]

Had my 03 TPS replaced two weeks ago. Have about 100 miles and everything seems great. First time I used the dealership in Shreveport, LA. They were great and knowledgeable about the bike. The only thing that sucks is that they are 100 miles from home. Oh well, it is an excuse to ride and go to the casinos!!

 

[Constant Mesh]

One of the many differences in the pre-06's and the '06 is the idle adjustment. On the pre-06's the idle setpoint was achieved by adjusting the closed position of the throttle valves. If the idle rpm was too high you'd turn the knob and the throttle valve stop would move to a more closed position. For a low idle the stop would be moved to a more open throttle valve position. Obviously moving the throttle valve idle position would also move the TPS idle position. Would it vary the TPS signal up or down 2 or 3% for a given idle setpoint? I don't know.

On the '06 the idle rpm is adjusted in a different way. The closed position of the throttle valves is fixed -- not adjusted. The idle is changed by adjusting an external air valve which feeds filtered air to each of the throttle bodies. So the signal from the TPS is unaffected by adjusting the idle rpm.

 

[RTSR1/FJR]

Last Sun. (New Years Eve) the FJR started acting up again (acted up every so often), so today I called Orlando Yamaha to see if they could do it today. They told me to bring it in right away and had the TPS changed out within an hour of arriving from a 35mi. ride to get there. The bike runs much smoother and more power everywhere! Moral of the story here is if you live in Orlando or Central Fla. you won't get a hassel from these guys and you'll get your bike fixed right. Well at least they did me right. Now I got to get the R1 over there for the same thing.

 

[goose]

Folks,

After checking the Seal and harrasing Yamaha and the dealer, looks like the dealer is getting all the bikes in that are playing up on Tuesday. I'll let you know how it goes.