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Buell Forum » Old School Buell » Archive through January 30, 2013 » X1 will not idle/ run without AFV at 150 « Previous Next »

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Orngm2
Posted on Wednesday, December 05, 2012 - 03:57 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Here is my situation:
1999 x1 with forcewinder intake and force exhaust. The bike will not run unless the AFV is set to 150. checked intake, exhaust and fuel injectors with MAPP and no change in ther idle. while bike is idling i the only thing i see on ECM that seems out of wack is the TPS setting jumps from 5.1 to 4.7 and back to 5.1. i have a stock ECM on the bike with what looks to be a map that has been played with. i also have a race ecm but the bike will not even start with this installed. anybody want to take this on?
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01x1buell
Posted on Wednesday, December 05, 2012 - 05:47 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

well , have you done a TPS reset on it??
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Orngm2
Posted on Wednesday, December 05, 2012 - 06:19 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Did the tps reset and checked timing.
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01x1buell
Posted on Wednesday, December 05, 2012 - 06:30 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

how is your cold start enrichment ?? or does it do this when warm also.
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Orngm2
Posted on Wednesday, December 05, 2012 - 06:52 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Does this also when warm.
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01x1buell
Posted on Wednesday, December 05, 2012 - 07:05 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

well i wish i could help you out here, but i have no idea. Someone will chime in and have some ideas for you.
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Two_seasons
Posted on Wednesday, December 05, 2012 - 07:21 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

O2 sensor fail? Are your plugs black and fuel fouled?

Could be an engine temp sensor too. I had one fail and the bike would buck under load, run better at steady throttle state, then buck and backfire when hitting the throttle again.

Any DTC's showing? That would be Diagnostic Trouble Codes.

Is your battery fully charged? How old is it? Load tested recently?
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Two_seasons
Posted on Wednesday, December 05, 2012 - 07:23 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Have you changed fuel sources recently? Are they running e15 in your neck of the woods?
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Hootowl
Posted on Wednesday, December 05, 2012 - 07:37 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

What fuel map are you using?
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Orngm2
Posted on Wednesday, December 05, 2012 - 08:21 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

No codes... I have a stock ecm with what I think is a map that has been played with. I bought a race ecm and the bike will not start with it.
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Firemanjim
Posted on Wednesday, December 05, 2012 - 09:49 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Suspect fuel pump/ fuel filter causing lack of pressure so injectors not getting enough fuel. Should see about 55 psi and it should not drop off after key is off.

Was bike running before or has it sat for awhile.
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Orngm2
Posted on Wednesday, December 05, 2012 - 10:01 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

It was bought as a parts bike. I rebuilt the motor and here is where I am. Fuel pump and fuel injectors are my next place to look.
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Orngm2
Posted on Thursday, December 06, 2012 - 10:29 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

played with the bike today:
bike started with the AFV at 135.
watched cold start enrichment start at 130% and work its way down to 100% when engine was at 160-165 deg cel. also monitored EGO voltage and it went lower as cold start enrichment went down with it. when cold start enrichment hit 100% the EG0 was at .6. One thing that does not sound right is the fuel pump when it primes. per the service manual i turned the ignition key several times on and off in a row and listened to the pump as it primed and it seemed like it labored each time a little more... bad fuel pump?
plugs look tan by the way.
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Natexlh1000
Posted on Thursday, December 06, 2012 - 10:56 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

If it was sitting for a while, perhaps it just needs to be run to dissolve out the gummy crap in the fuel line.
Give it some exercise and see if it improves a little.
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Hootowl
Posted on Thursday, December 06, 2012 - 10:58 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Bike won't start at all, or it won't stay running with the new race ECM?

Try flashing the race map into the stock ECM. The intake and exhaust you're using will make it run lean with a stock map, which would cause your AFV to go up. And who knows what tweaks the PO made to the map.
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Orngm2
Posted on Thursday, December 06, 2012 - 11:33 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

could somebody send me the race ecm eeprom with maps as it came from the factory? the map in the race ecm probably is not stock

(Message edited by orngm2 on December 06, 2012)
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Orngm2
Posted on Thursday, December 06, 2012 - 01:11 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Just checked fuel pump pressure 50psi, rock steady at idle and above. next step get the injectors cleaned/replaced?
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Hootowl
Posted on Thursday, December 06, 2012 - 01:40 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I've never used ECMspy before, but I understand it has an injector test option. Can you pull an injector and see if it sprays?
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Orngm2
Posted on Thursday, December 06, 2012 - 03:29 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

okay, pulled the injectors and noticed a few things: the front injector was not seated all the way in the intake manifold. when i removed both injectors to look inside i noticed lots of little rubber particles in the fuel rail and around the injector for the rear cylinder. i then removed the fuel line from the fuel pump to the fuel rail and cut it open... the inside is all dried, cracked and flaking. i think i have found the reason the AFV needs to be at 135 to 150 for the bike to idle... clogged injectors!!. next step is to find a suitable sub at autozone or get these cleaned and calibrated.
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Firemanjim
Posted on Thursday, December 06, 2012 - 04:15 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Should be easy to find a place to clean them. We use RC Injection in Socal.
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Two_seasons
Posted on Thursday, December 06, 2012 - 06:56 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Great follow up. Thanks for sharing.
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Orngm2
Posted on Friday, December 07, 2012 - 11:41 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Injectors sent to injector connection in ga for a clean and cal ... I need to replace fuel line and get a new fuel filter and all should be a go. Stay tuned!!!
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Kalali
Posted on Sunday, December 09, 2012 - 09:13 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Technically, the reason for the high AFV was poor injector seals not clogged injectors.
Make sure you replace the o-rings before putting things back together.
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Orngm2
Posted on Sunday, December 09, 2012 - 12:41 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

WRONG kakali...
My injectors could not flow enough fuel because they were clogged, the ECM compensated with a higher AFV. seals were all good with no leaks.
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Orngm2
Posted on Sunday, December 23, 2012 - 07:46 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Latest...
fuel injectors cleaned, tried several different maps from various people on this board (thnx), and it seems when i run the STOCK RACE ECM with the force winder and force exhust is the answer!! bikes starts and runs like normal and the flat spot at 3000-3500 is gone with the AFV at 100, just wanted to update.
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Hootowl
Posted on Monday, December 24, 2012 - 12:05 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Beautiful. Glad you got it figured out.
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Mrsandman
Posted on Friday, January 18, 2013 - 06:27 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I am having a similar problem with my bike. I had the motor rebuilt about 2 months ago and got new injectors for it and at first it seemed fine (for 10-15) miles, but I cannor figure out why when under load it wants to die. HD sayed my fuel pump and pressure are good. they did a TPS reset and put a new O2 and air intake sensor and it seemed fine for a while (for the second time) and once again, i get the popping and sputtering at expressway speeds (under 55 at 2500 rpm). When on freeway at 65-70@ 3,000 rpm, it seems to run fine. I am also using a race only ECM. any thoughts.
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