STVA and discs knackered - repair?

[Red ones]

After 95,000+ miles I think I have worn my SK5 out!

This years list of repairs:
COMPLETED (wasted money I think)
Clutch adjuster and cable
Front tyre

TO DO
STVA has failed
Front discs



I hear the first item is megabucks, the 2nd item is c.£340.

[jambo]

I suppose if you want to buy brand new parts, at full retail money then things become rather expensive.

I'm assuming the STVA is the throttle body secondary valve motor. 2nd hand throttle bodies aren't that dear.

95,000 miles to a set of discs is pretty good going, and at £340 a pair I think the OE ones are pretty well priced. However, there are other companies selling new discs, and people on here sell wheels and discs with lots of life left in them on a regular basis for sensible money.

Jambo

[Owenski]

+1 Red one,

STVA - Secondary throttle valve assembly?
If thats the case buy one of these:
ebay link (http://www.ebay.co.uk/itm/SUZUKI-SV650-SV-650-SK6-K6-CARBURETTOR-CARB-CARBURETOR-INJECTORS-THROTTLE-BODIES-/160691004809?pt=UK_Motorcycle_Parts_13&hash=item2569ee2589)

As for the discs:
ebay link 2 (http://www.ebay.co.uk/itm/Suzuki-Bandit-600-GSF-RF-GSX-SV650-Wavey-front-Rear-discs-Blackshadow-Uk-/300900392321?pt=UK_Motorcycle_Parts_13&hash=item460f0f9d81)

There you go, £240 all in and the bikes hunky dory once again :)

[Owenski]

In fact RUNAKO has a set of discs available at £80...
http://forums.sv650.org/showthread.php?t=198954

[yorkie_chris]

Second hand bits, job jobbed.

Most of the bikes that get broken have 30k on them... this gives you 60k more miles :)

[squirrel_hunter]

Its not dead, just resting for a bit. The throttle bank from eBay and the discs from Runako are good value. Plus an afternoon to fit them and back on the road you are to clock up some more miles.

[Red ones]

It may well be resting.

Early this morning it was apart again. The STVA seems fine, but I now have a C29 fault and have found I have only 2.4Vas a sensor input voltage. So I'm guessing I have a short somewhere. I pulled the ECM connector off but there is nothing odd there.

Strange how all this started after I removed the airbox a few days again though. Being trying to trace the Red and Black/Brown wires but haven't found anything odd yet.

[Bibio]

have you checked all the rubber hoses and bungs. after 95k i would expect some to be a bit past it. pay attention to the bungs under the TB's as they like to perish and let air in. also check the crank case ventilation valve in the air box to see if it's gummed up.

ooohhhh and the TPS can read fine but in fact is fubar

[Red ones]

Would replacing the TPS be likely to resolve this issue? When the engine is behaving itself it doesn't matter how much I try to adjust the TPS I still get _C00, or it stalls!

[Bibio]

remember you have to adjust the tickover at the same time to keep the bike from stalling.

move the TPS and bike revs drop so increase tickover etc.etc

[Red ones]

Hmmm. I'll have to have another bash at it. Otherwise the fall back is to remove the STVA connector and move the STV to fully open by hand, and live with the fault indicator. The winter will be interesting!

[Bibio]

are you trying to set the TPS or STPS e.g. top censor or bottom censor

[Red ones]

TPS.

I have an intermittent C28 fault. In tracing that I came across the TPS maladjustment and have attempted to correct, but can't get it to settle even when the faults are not present.

I now have a C29 fault, and have found the voltage to the STP at just 2.4V. I ran out of time today and didn't get to measure the resistance across the STP.

Must say this is either a two man job or Suzuki designers have more hands than the rest of us!

[Bibio]

a brand new TPS is around £80 and an STPS is around £105

very unlikely to be STPS and you can only adjust with a multimeter. TPS is set by line on dash. if it's the TPS on the way out the bike will run like a pile of poo. fault codes can only point you in the general direction of the fault and it can be anywhere along the line.

if your TPS wont set then i would guess its fubar or you have a work hardened wire or corroded connector somewhere.

[Runako]

Edited: Haha, my goodness who knew people read my for sale thread. Thanks all. Well, I believe you've got all the options you need and whatever you decide, I hope you get it up and running again soon to enjoy some of this glorious weather :)

[Red ones]

I'm taking the plunge for a new TPS and hoping it will do the job.


The bike is handling like a large red turd. Although I get a _C28 or _C29 code with the service tool it feels like the bike is arguing over how much throttle I'm applying. With the throttle held steady on the handlebar the revs are up and down like a ****** drawers. Tick over is any thing random between 1200 and 4000 an acceleration is a lottery. The fault shown only changes to -C28 at about 4500 rpm.

So I'm ignoring the manual for the fault code and going with what seems logical!! (Could be an £80 mistake...)

[Red ones]

So, new TPS fitted and so far the problems have gone. I think the TPS was completely shot. As soon as the new one was fitted (which the guy at Franco's said he doesn't recollect ever selling for an SV before) the tick over settled, the fault code set straight away to -C00, the line moved up at between 1750 and 2000 rpm. I rode it today and the power was smooth and acceleration massively improved.

What with this and a new clutch adjuster mechanism a few weeks ago the bike feels completely different. Looking forward to my commute once again.

Keeping a close eye on my front discs and planning to replace when the pads are gone, or the MOT arrives - either way it is about September.

So far the nightmare bike has cost £130 for clutch and throttle work, with me allowing another £80 or so for some 2nd hand discs. Did research for new discs and found that (amazingly) OEM ones are the cheapest I can find, with patterns a little more expensive - how unusual!!!

[jambo]

Suzuki restructured their pricing a few years ago so it's always worth a go. for comparison Kawasaki quoted me £240 per disk a few years ago. Surprisingly they did not get my money...

Jambo
Sent from my thingie

[Red ones]

OMG. The commute was a pleasure. As Rictus said about the clutch adjuster, there is a huge difference between it working and it working right. Filtering is do much easier and the acceleration on the motorway is great.


Note to self - must check TPS more often.