Author Topic: new strom cuts out/backfires/stalls on pull away (Read 63937 times)

oddbod · « **Reply #20 on:** May 23, 2014, 15:27:25 »

I don't think its a case of the TPS going wrong as it were, as its been like it since I purchased the bike. More a case of it has not been right from the outset. Suzuki GB have implied this may be the cuplrit and may resolve the fault if adjusted. If after adjustment the issue is still there I have agreed with Suzuki and the dealer that the bike will stay with them until it is fixed. However, I did also say that I do not expect them to take the michael and keep it for ages. They have a week!

greywolf · « **Reply #21 on:** May 23, 2014, 15:56:41 »

The TPS is basically a potentiometer. If it gets dirty, the wiper rubs the contact material off or it isn't right to start with, the ECM doesn't get the correct information on the throttle position and feeds the wrong information to the fuel injection system. Typically, a bad TPS will cause stalling at idle and uneven power at low throttle openings, especially when hot. The TPS spends most of its life with the throttle closed when the bike is not being used or is at idle so that's the point where more damage is likely to occur.

oddbod · « **Reply #22 on:** May 23, 2014, 16:05:02 »

Excellent description of the TPS function. kind of sums up the problem I've been having since purchase.

Quote from: "greywolf"

Typically, a bad TPS will cause stalling at idle and uneven power at low throttle openings, especially when hot.

Fingers crossed that's the fault then!!

oddbod · « **Reply #23 on:** May 23, 2014, 16:07:12 »

its a shame the mechanic at the dealers couldn't provide me with that answer last week, esp when I suggested it maybe the TPS!!

greywolf · « **Reply #24 on:** May 23, 2014, 17:45:54 »

Mis-adjusted throttle body air screws will do the same thing.

oddbod · « **Reply #25 on:** May 23, 2014, 20:09:19 »

The mechanic was of the opinion there were no adjustment screws on the injector system whatsoever as I had prev asked him to adjust the tick over to compensate for the rev drop.

I also suggested the possibility that the throttle body sleeves may have popped off but he dismissed the idea and said the bike wild rev at 4000rpm if they were loose or popped off.

I disagreed but he stood firm with his opinion.

I appreciate your technical pointers and will go loaded with these tmrw morn.

greywolf · « **Reply #26 on:** May 23, 2014, 22:39:15 »

Quote from: "oddbod"

The mechanic was of the opinion there were no adjustment screws on the injector system whatsoever as I had prev asked him to adjust the tick over to compensate for the rev drop.

The idle rpm is not adjustable. There will be air screws on the throttle bodies to synch them at idle. That's a totally different procedure from what you asked about.

oddbod · « **Reply #27 on:** May 23, 2014, 22:46:24 »

Well tomorrow is the big fault find and rectify day so it will be interesting to see whether its fixed.

Will keep this post updated as soon as I have some news

oddbod · « **Reply #28 on:** May 23, 2014, 22:47:52 »

Thanks again!

oddbod · « **Reply #29 on:** May 24, 2014, 09:22:51 »

Greywolf,
Is the throttle position sensor adjustable or would it have to replaced/repaired?

SimonW · « **Reply #30 on:** May 24, 2014, 10:24:42 »

Adjustable

oddbod · « **Reply #31 on:** May 24, 2014, 10:36:19 »

Thanks. I just you tubed it and seen how its done. Thanks all the same

greywolf · « **Reply #32 on:** May 24, 2014, 12:50:12 »

Quote from: "oddbod"

Greywolf,
Is the throttle position sensor adjustable or would it have to replaced/repaired?

It's adjustable if it is working properly. If it isn't working properly, it would need to be replaced. A TPS adjustment, a TBS synch at idle speed and an ISC valve reset are probably called for here.

oddbod · « **Reply #33 on:** May 24, 2014, 13:19:27 »

The bike is in the dealers now so guess I will just have to wait and see how they get on with it.
Will keep this post updated.

Timmo · « **Reply #34 on:** May 24, 2014, 21:50:36 »

With 434 views tell them to bloody hurry up . It's like who killed Tina here, the vstrom community are waiting. Direct them to the site it might help them out! Can't wait for the ending,good luck.

Jacko · « **Reply #35 on:** May 24, 2014, 21:52:53 »

Big audience.

tallpaul · « **Reply #36 on:** May 24, 2014, 22:45:32 »

It never ceases to amaze me as to what gets us all excited on here. This is nearly as nail-biting as waiting for Juv's bike to start! Come on oddbod, what's the verdict?!

Gassoon · « **Reply #37 on:** May 25, 2014, 09:24:59 »

I bet they're keeping it over the bank holiday...

Or oddbods blasting aboot on his now-perfect Vee...

oddbod · « **Reply #38 on:** May 25, 2014, 11:09:10 »

Sorry fellas. No update to report on yet.

Dropped it off yesterday lunchtime. No quick fix in mind as far as dealer was concerned.
They had already spoken to Suzuki GB technical bloke who had suggested it maybe the TPS.

When I said l'll hang around while you check it they were insistent they wanted to ride the bike until they recreate the fault themselves, then check the TPS and any other possibilities, then re-test the bike until they are happy the fault has been fixed.

"Assuring me they are working in my best interests", they asked if they could keep the bike for a few days, which I agreed to, on the previso it is fixed by next sat at the latest otherwise I will have no choice but to contact Suzuki, inform the bike is not fit for purpous and have a refund.

To be honest I'm not overly convinced with their technical capabilities. When I suggest possible reasons for the fault, I am met with a certain amount of negativity or a reason why I am wrong. Perhaps they don't appreciate customers trying to help them establish what the fault could possibly be or is it they are simply not bothered and hope I will get fed up with their excuses and take the bike home without having it fixed?

The saga continues....

gnewso · « **Reply #39 on:** May 25, 2014, 16:46:46 »

Where can I buy a new/used tps? I've got the issues talked about here, bike is great at speed and doesn't use much fuel going to leeds, but around town it's a pig and stalls loads and uneven idle. It's spoiling a great bike. I've tried to adjust it, keeps moving loads, but didn't seem to so,be the issue