Surging and my fix

[Ratman]

It is now above 40deg F in Minnesooota, went and picked up my ride from the shop it's been at since Thanksgiving for surging.

The surge has been posted forever but I have a different fix. It appears that my kickstand switch was the problem. I don’t have many miles on it yet and it can’t get very hot in 40 deg weather, but for all appearances it’s fixed!!

 

[markjenn]

The surge has been posted forever but I have a different fix. It appears that my kickstand switch was the problem.

Sounds like a long shot to me. A very long shot. I can't conceive of an intermittent kickstand switch cutting in/out soft enough to be interpreted as a surge.

Surging is a problem that comes and goes with most bikes due to changes in tuning, weather, etc. Sounds like your is gone right now. It will probably return at some point.

I have a couple bikes (including the FJR) that I can find surging if I look hard enough. Life is simpler just to ignore it.

- Mark

 

[ahamlin01]

I will be surprised too - I hope for your sake it is gone forever! And Mark, about ignoring it? If your's surged the way mine does there is no way you can ignore it. When it happens really bad with a rider on the back it is nearly un-rideable. I think (know from the diag screen) mine is the TPS, just haven't had the funds to replace it yet. So it waits and I ride it anyway.

Ratman - you gotta let us know if it is in fact completely gone when you start doing the long miles in warm weather. I hope it is completely gone, for your sake. I know what you were going through.

Allen

 

[luvtoride]

mine is the TPS, just haven't had the funds to replace it yet. So it waits and I ride it anyway.

Have you actually talked with a mechanic about this, yet? When I had a TSP problem they didn't replace it. They did some sort of adjustment to it. Cost me less than an hours labor to have resolved. Might want to speak with the Yammy mechanic.

 

[ahamlin01]

I did mention it - did not discuss in detail with them. Do you remember exactly what they did?

In my case the change to a lower octane fuel made a big difference, but always with a rider on back, even on cool days, it can start surging like crazy when the throttle is barely open, just cruising at 2500k or so in 4th or 5th.

I did see an error doing the diag screen as described in this forum. The throttle numbers skipped around rather than being smooth when doing the diag (I pulled over when it was surging really badly and did the diag) which indicates a TPS failing it seems.

What was done in your case? A throttle body synch? TPS adjustment? What was your FJR "surging" like?

Thanks for any info.

Allen

 

[Bounce]

4th or 5th at 2500 is lugging the motor. it's also a well documented event to have some surging there as it's apparently right on the cusp between two parts of the fuel map, so the efi jumps back and forth between the 2. adjusting the CO with the Barbarian jumper mod or installing a Power Commander 3 has been the big resolution by allowing you to adjust the fuel map. Less expensive is to up the rpms to 3000 (down shift).

 

[ahamlin01]

That makes a lot of sense. I didn't know that that was 'lugging' it at that rpm. I did know about downshifting to relieve the problem, and have spent a lot more time riding with the bike at above 3000. That definitely helps to prevent/temper the surging. I have considered a PCIII. It sounds like it would resolve the whole issue for me.

Thank you - I appreciate your comments.

Allen

 

[Ratman]

Well it's snowing again, summer doesn’t last long in January.

I didn't believe it either I only got a hundred miles on it before the snow came again but it ran great. I still think I have at least two things going on. I’ve done the TPS check and the numbers are perfectly liner.

 

[luvtoride]

I did mention it - did not discuss in detail with them.  Do you remember exactly what they did?
In my case the change to a lower octane fuel made a big difference, but always with a rider on back, even on cool days, it can start surging like crazy when the throttle is barely open, just cruising at 2500k or so in 4th or 5th.

I did see an error doing the diag screen as described in this forum.  The throttle numbers skipped around rather than being smooth when doing the diag (I pulled over when it was surging really badly and did the diag) which indicates a TPS failing it seems.

What was done in your case?  A throttle body synch?  TPS adjustment?  What was your FJR "surging" like?

Thanks for any info. 

Allen

My problem wasn't surging... well, I did have some surging issues which I 80% resolved by doing the Barbarian Jumper & upping my mixture by 3 points each cylinder.

When I had the problem with my TPS I was getting a "check engine" light. The diag code was... um... I think that it was a code 15 or 16? I really don't remember. I took it to Yamaha & they did an adjustment... cannot tell you exactly what is was... but it was only an adjustment. The mechanic told me that it's extremely rare for a TPS to go bad... now, get out of adjusment??? That seems to happen quite frequently.

 

[ahamlin01]

Well it's snowing again, summer doesn’t last long in January

I understand that - here in CT we have had a much warmer than normal winter but I have only been able to go for one good ride a couple of week-ends ago.