Stalls at random

[Shawns]

09 replaced the IAC and TPS, with one off of spare throttle body assay. Runs fine then will stall. No check engine light. Did do the TPS reset after I replaced it. I replaced both when the bike refused to idle, had codes for IAC and TPS. Cleaned both and no change so I replaced.

 

[Matteson]

Im.sure you have checked most things. Just throwing it out there, ecm connections good? Grounding issues? Short to ground? Battery? I don't think I will be much help. Kinda looking forward to hearing what it is as I know you are too. Very strange

 

[gtp3800]

loose positive battery cable?

 

[rchuff]

you should take a look to see where your AFV % is at with either( ecmspy or tunerpro ). it should be around 100 + - a little.

 

[Shawns]

afv% front and rear ar 100. I just sent in for the full activation. I really don't know what i'm looking at. Everything changes values in the live data log. fuel pressure does decrease during run time. it starts at around 80 psi and goes down to about 60 psi at idle.

 

[Shawns]

Still doesn't idle well. I am thinking of adjusting the idle at the throttle body to bring it up a hair. Waiting for Ecmspy to get the donation noted so I can get more into the ECM. I have the race ECM and I know your not supposed to mess with it, but no codes and I am at a loss here.

 

[stamen]

so does it fire up with out hesitation? if it does how long does it run before it stalls? Do you blip the throttle or leave it alone? If you blip it does it keep it running or still die?

 

[Shawns]

Doesn't fire up cold without rolling the throttle a few times. It sometimes runs for a few seconds and stalls sometimes a few min. When I ride, sometimes at a stop it will idle sometimes it stalls. No rhyme or reason, not that I have found. Voltage is good, has fuel, has spark, air fuel values seem good. Hence the confusion of why she doesn't idle.

 

[Shawns]

Ok, was playing with the idle, runs for about 30 seconds and would slow down the idle and stall. Got it to idle longer and blip the the throttle and it would stall.

 

[04colly]

Sounds like a fueling issue

 

[Shawns]

Have good fuel pressure.

 

[buellerchris]

Definitely sounds like a fueling issue. How does it run while in motion? Is it choppy? Also did you have this issue prior to getting the race ECM? It may need re-flashed. If it did this prior to the race ECM, I would say you have a limp injector or dirt in the fuel filter or even yet a spark plug went sour.

 

[Shawns]

Runs great out on the road. Always had the race ecm, going to try some injector cleaner and see how that works. I just put new plugs in it at the start of the season.

 

[scottscott]

I'm having idle issues as well starts fine. Runs fine but riding up to stop it dies. As far as I know every thing else in good. Good voltage. Good fuel. I'm puzzled as well

 

[Shawns]

I changed my injectors out for a spare set i had, and it is idling now. waiting for a nice day to take it out and see if that was the issue.

 

[nicholas900]

Today is nice. A rare October day here in Cheektowaga. Just got back from a ride on my XB to look at an SX......

We gotta get a B-lo ride together some day.

 

[Shawns]

True story there. I would love an SX, just not the payments. Old lady's van died a few weeks back so now I have the new car payment syndrome.

 

[rchuff]

shawns how did you make out, did you ride the bike yet?

 

[Shawns]

Rode it yesterday and it seems fine. doesn't stall. I only took it out for about a mile before the weather turned.

 

[RedDevilWheezy]

Any update? Having the same issue and wondering if you fix held up.