Hey Guys

2007 96 Cube FI with High Flow AC and S&S Slip Ons. I dont run a controller.  I run nightrider fuel richening devices.  Exhaust flapper disabled.  Filled up Tank W/98 last night on way home.  Rode to work this morning and idle was up around 1800 I guess.  Did it all the way to work; about 20kms.  Annoying but the bike has been quirky like this with idle occasionally before and I didnt worry too much about it.  This morning was worse as it did it all the way there.  I get on it to go home tonight and the complete opposite.  I start it and it stalls right away.  Wont idle.  Have to crack throttle to keep it going.  Took the long way home about 40kms as you do and it would try to stall at every idle situation.  It got me close to home and I did finally let it totally stall.  Restarted and it started idling but way too low.  Barely running.  Any thoughts appreciated.  Engine light not on or anything.  Could it be like a Throttle Position Sensor going bad ?  O2 sensors dirty ??  Really appreciate a couple ideas on things to look for before starting to spend on it.

Thanks

My first thought would be bad fuel. If it was running okay, then ran like shit when you filled up.

Hey Bonkerz. Yea I thought about fuel too. And you could be right. I am fussy DH. Last time I had this stalling condition it happened the day after filling up as well. It lasted thru the whole tank. I ran out right as pulling one of those dodgy Metro fuel joints.. I usually only use Shell 98 which is what I filled up with the other night. I have never had an issue with Shell and using it is a hangover from boating as several Boat technicians recommended I use Shell only when I was having detonating issues with my engines. Will keep an eye on it. Will definately check the IAC tonight as well Hilly. Thanks

IAC was what I thought it could be too.

Also, when the speed sensor shits itself it can also cause the bike to lose idle control and it doesn't always light the check engine light.

Hi all...I had the exact same problem a few years back.It was a sensor.Was fixed under warrantee.

Thanks Fatbat. Hey OneBall You reckon it might have been the Speed Sensor as Fatbat was saying ??

I had a speed sensor fail and it resulted in a few intermittent problems. This included loss of idle control both up and down. Down was bad as the bike would stall. Up resulted in me looking like a goose when taking off. Indicators would auto cancel. The speed played up and eventually didn't work at all. The check engine light didn't light until the speed stopped working. Not saying the op's problem is the speedo but it's a possibility if some of the other more obvious things are ruled out like the IAC

Meant to say indicators wouldn't auto cancel. And I meant speedo, not speed. Bloody auto correct

Had AC off today and went after the IAC. Was clean and looking up into it with mirror the little motor was operating as it should up and down when turning kill switch on and off. All in all it was very clean in there. Gave everything a good dose of carb cleaner though including that little tonsil like looking sensor in the throttlebody. Took a run and still idling way too low and when I pulled clutch in to go in driveway she stalled.. So still looking. Will try to get at least half the tank burned this weekend; refill somewhere else and put a little fuel injection cleaner in the tank and see how it goes. If still no good, may look into the speed sensor Fatbat mentioned. Thanks for input so far.

Forgot to mention: After it does stall and I restart it it will idle fine !!

Hi all...jersey,I think it was a temperature sensor.

Thanks Oneball. Was just out there farking around and noticed the tailight was out; so hit the brake lights and nothing there either. Fat bat was saying speed sensor could cause several intermittants. Too many bourbons so goin to bed and check on tomorrow. . .

Speed sensor is possible but unlikely. Not easy to check without buying another one and replacing which may not do a thing.

There should be other things to check first.

If you have a tuner, plug it in to check fault codes. Or take to shop

Remove the nightrider stuff and see how the bike performs

Well I'm sort of Happy but also embarrassed to report that the bike is running great. No more stalling. It ran fine except at idle. More popping than usual as well, were the only symptoms. Went for a couple squirts Sunday and again to work Monday with same stalling condition. Took long way home again last night and had racked about 200Kms on the tank of fuel. Stopped and got about 13 litres of 98 in her and after 3kms no more stalling. Totally clear. Pisses me off I ran it as far as I did with a bad batch of fuel. Even worse I was wondering if the Taillight and Stop light not working were related. LOL I pulled the tailight lens off Sunday morning to see that the bulb had fallen out of its socket ! I should know it better than most always check the basics first guys. Strange thing is this is not the first time with this condition. Ive had the bike about 5000kms and it has happened twice before just not this bad. It was mostly a really low idle and occasional stalling. Is it possible the Harley FI systems are that sensitive to bad fuel and is there that much bad fuel out there. I never had a fuel problem with fuel injected cars.

The lean code on the front cyl is most likely the Nightrider enrichener as it fools the O2 sensor signal to the ECU. Is it p0131 or P0151 ?

The thing I'm wondering is that if you are running the nightrider plugs on both Cyl's you should have both p0131 & P0151 showing up, not just one?

I run them (XIEDS) on my bike and no probs (ove18 mths now) and I do have p0131 or P0151 showing on mine.

Given it seems like bad fuel caused the issue, you may want to try a little flashlube valve saver in the tank. I put about 15ml in with a full tank every couple of months and it helps clean / lubricate injectors and the fuel system.

As for the high / low idle, like others mentioned sounds very much like the IAC, if cleaning doesnt help you will need to replace it. They are a finicky little bugga of a thing and sometimes lose the plot completely in relation to where they should be for idle. .

 

Jersey,

have a read of this page from the manufacturer of the VIEDS / XIEDS

http://www.nightrider.com/parts/131_151_explained.htm

As long as the x/vieds are connected, the error code will appear even after clearing it. The ECM will not 'learn' the new resistance and adjust its tables / parameters accordingly. It just compensates for the new signal and richens the mixture.

I really think youre issue is the IAC has gone up the creek and not resetting properly.

IAc and any other electronic valve for that matter can bugger up. LPG Falcons use them to control the fuel delivery and I have had to change the one on my runaround a couple of times as they play up (stalling / low idle....similar issues

I think these are the answer http://www.oldschoolproducts.org/IdleKing_Control.php

rob