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08-31-2013, 02:30 PM,
#1
Erratic idle - I'm so confused!!
I have a 2007 V-Star 1300. I purchased it in 2009 from Simi Valley Yamaha. After 2 months I put Bug Jug Hugger Pipes on it. Since then it has been a nightmare...
It started backfiring & running terrible, then wouldn't start. The dealer said it needed to have a Power Commander installed. So PC III USB was installed. It still has intermittent erratic idle & backfiring on upshift & downshift in low gears. I was using premium gas for years, then read owner's manual & started using regular unleaded 6 months ago. And that helped a little bit. The idle problem only happens when it is hot and only sometimes. I can come up to a stop light & the idle will be so high I think it might explode. Nothing I do will lower it. Then all of the sudden it idles down (sometimes). At the next stop light it might idle so low it dies. At the next stop light it will idle so high that I don't have to give it any gas to take off, just let the clutch out & it can drive itself. I have learned how to curtail the backfiring by adjusting the amount of throttle I give it during shifting. Also the power commander is re-mapped every time the dealer does my oil changes. The sad thing is that the dealer says there is nothing else they can do, and that is after I have taken it in 3 times for that problem alone. Also the cover for the air filter gets screaming hot. I found a leak in my exhaust pipes last night. Heading out there now to remove pipes to check out where the leak is coming from. If anyone has experienced this kind of situation, please let me know what to do...before I shoot my bike!!
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08-31-2013, 03:24 PM,
#2
RE: Erratic idle - I'm so confused!!
I can't be of any specific help but I think I would be looking for another dealer / mechanic...

It does sound like possibly you have an intermittent vacuum leak somewhere but there are a lot of other things it could be, too.

John
===========================
2011 V-Star 650 Custom (new in fall 2013)
V&H Cruzer Pipes, Memphis Shades Bat Wing, Floorboards, Highway Bars,
Locking Bags, Tail Rack, LED Signals & Aux Brake Lights, Headlight Modulator,
Brake Light Modulator, 5/8" Gel Pad Under Upholstery.
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08-31-2013, 04:10 PM,
#3
RE: Erratic idle - I'm so confused!!
ditto on the check with another dealer/mechanic, everything can be fixed, they are just either done with it or just plain ignorant and the kinda money you are giving them they should fix it right.
2006 VStar Stratoliner, Freedom Performance split dual exhaust, Mustang seats, Sissy bar with back rack, bolted saddlebags to mounts.
Life's tough .. it's even tougher if you're stupid. - John Wayne

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08-31-2013, 04:18 PM, (This post was last modified: 08-31-2013, 04:19 PM by Mr RCOM.)
#4
RE: Erratic idle - I'm so confused!!
adjust the amount of throttle your giving????? im sure you should be off the throttle all the way, shift, then roll on throttle while letting of of the clutch. not still on the throttle while pulling the clutch in and shifting

http://tech.bareasschoppers.com/exhaust/...solutions/

and im sure your PC should only be set once...after you find a map that works for you. only changing it after adding mods or if you were to go from a road map to track configured map
LoLrcycle rider Cool
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08-31-2013, 05:41 PM,
#5
RE: Erratic idle - I'm so confused!!
Thanks so much guys!! I ended up putting my original pipes back on and I'll see what that does. Gona run to the store for a couple of bolts. Do you think I should hook the 02 sensor back up? Do you think I should keep the Power Commander connected & re-map it or should I disconnect it completely & be back to OG style??!!

This is so great to be able to get this info & keep the "Stealership" out of the loop!
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08-31-2013, 05:58 PM,
#6
RE: Erratic idle - I'm so confused!!
well would say sounds like a good experiment, go back to stock, hook up the o2, no programs, etc, so its all like it was originally, see how she does then.
2006 VStar Stratoliner, Freedom Performance split dual exhaust, Mustang seats, Sissy bar with back rack, bolted saddlebags to mounts.
Life's tough .. it's even tougher if you're stupid. - John Wayne

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08-31-2013, 06:56 PM,
#7
RE: Erratic idle - I'm so confused!!
Thanks so much Keith! I'll let you know what happens.

I used to live in Farmers Branch...

Don't mess with Texas!!
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08-31-2013, 09:05 PM,
#8
RE: Erratic idle - I'm so confused!!
certainly the exhaust leak could be contributing to the popping. and I agree with Mr RCOM why would the commander need remapping after an oil change. I suspect your mechanic is useless. @SnaykByte @Gibbo so your air filters get hot.
I am not sure about you actual posted problem with erratic idle
Jmck
Two wheels moves me body and soul Cool
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08-31-2013, 09:58 PM, (This post was last modified: 08-31-2013, 10:04 PM by Mr RCOM.)
#9
RE: Erratic idle - I'm so confused!!
Yeah. I totally wasn't trying to be a dick... i reread what i posted when going to see what jmck said and I hope I didn't come off that way.

But I'd do what keith says... just go back to stock and hook that O2 back up. You need it for fuel injection. Hell you could even check it to see if its working... also I know in the car world they can get dirty and you can clean them a bit. I'm sure there's gotta be an ohm value or some data you could use to test it out there.

Hey also just a thought. Have you tried some injector cleaner fuel additive?

Welcome to the forum!
LoLrcycle rider Cool
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08-31-2013, 10:42 PM,
#10
RE: Erratic idle - I'm so confused!!
I am going to try the injector cleaner tomorrow.
Thanks so much!
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08-31-2013, 11:37 PM,
#11
RE: Erratic idle - I'm so confused!!
I echo what other people have set. Get back to stock, clean things up, and then see how things look.
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09-01-2013, 01:26 AM,
#12
RE: Erratic idle - I'm so confused!!
Regardless of @jmck posting a link to my handle, I don't know squat about what you are trying to do. @Gibbo is incognito for a few days, but I'll bet he knows how to address this problem. Wait 'til he gets back online.

However, you are in the RIGHT forum for help with any VStar problem.
Cheers!
There is great need for a sarcasm font.
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09-01-2013, 03:07 AM,
#13
Re: Erratic idle - I'm so confused!!
Let me add one thing after I have read this again. There is no need to, as Mr rcom wrote, have a tune done after an oil change. They are either dishonest, incompetent, or some combo. Once you find a good map you only modify it for different mods. Not oil changes. As others have said get back to 100% stock and then we can look at each mod. I'd never visit that dealership again and once we figure this out I think a Google review may be in order.

Sent from my MB886 using Tapatalk 2
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09-01-2013, 10:27 AM,
#14
RE: Erratic idle - I'm so confused!!
(08-31-2013, 02:30 PM)wiglbug Wrote: I have a 2007 V-Star 1300. I purchased it in 2009 from Simi Valley Yamaha. After 2 months I put Bug Jug Hugger Pipes on it. Since then it has been a nightmare...
It started backfiring & running terrible, then wouldn't start. The dealer said it needed to have a Power Commander installed. So PC III USB was installed. It still has intermittent erratic idle & backfiring on upshift & downshift in low gears. I was using premium gas for years, then read owner's manual & started using regular unleaded 6 months ago. And that helped a little bit. The idle problem only happens when it is hot and only sometimes. I can come up to a stop light & the idle will be so high I think it might explode. Nothing I do will lower it. Then all of the sudden it idles down (sometimes). At the next stop light it might idle so low it dies. At the next stop light it will idle so high that I don't have to give it any gas to take off, just let the clutch out & it can drive itself. I have learned how to curtail the backfiring by adjusting the amount of throttle I give it during shifting. Also the power commander is re-mapped every time the dealer does my oil changes. The sad thing is that the dealer says there is nothing else they can do, and that is after I have taken it in 3 times for that problem alone. Also the cover for the air filter gets screaming hot. I found a leak in my exhaust pipes last night. Heading out there now to remove pipes to check out where the leak is coming from. If anyone has experienced this kind of situation, please let me know what to do...before I shoot my bike!!
IF a Power Commander is a module to work with exhaust and intake mods, then I would look at that unit itself. I did not read if you had an intake mod. Also I am not exactly sure of what a Power Commander does, but it sounds like it is the fuel/air adjuster and it sounds like it is not doing it's job.
I am a heating/AC tech and this comes from combustion theory.

If I am wrong sorry for the possible wrong input.
Doc
2012 1300 T Highway Bars, Passing Lights, Passenger Floor Boards, K&N Filter, LED Brake light module, Power Point, Ram Mount GPS, Mustang Vintage Seats, Luggage Rack, Bucks Lowers, Screaming Banshee Horn, LED Fogs, Volt Gauge, Saddle Bag Guards, Radiator Cover, Boss Bags trunk, Kurykin Longhorn pegs
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09-03-2013, 07:03 AM, (This post was last modified: 09-03-2013, 07:09 AM by Gibbo.)
#15
RE: Erratic idle - I'm so confused!!
(08-31-2013, 02:30 PM)wiglbug Wrote: I have a 2007 V-Star 1300. I purchased it in 2009 from Simi Valley Yamaha. After 2 months I put Bug Jug Hugger Pipes on it. Since then it has been a nightmare...
It started backfiring & running terrible, then wouldn't start. The dealer said it needed to have a Power Commander installed. So PC III USB was installed. It still has intermittent erratic idle & backfiring on upshift & downshift in low gears. I was using premium gas for years, then read owner's manual & started using regular unleaded 6 months ago. And that helped a little bit. The idle problem only happens when it is hot and only sometimes. I can come up to a stop light & the idle will be so high I think it might explode. Nothing I do will lower it. Then all of the sudden it idles down (sometimes). At the next stop light it might idle so low it dies. At the next stop light it will idle so high that I don't have to give it any gas to take off, just let the clutch out & it can drive itself. I have learned how to curtail the backfiring by adjusting the amount of throttle I give it during shifting. Also the power commander is re-mapped every time the dealer does my oil changes. The sad thing is that the dealer says there is nothing else they can do, and that is after I have taken it in 3 times for that problem alone. Also the cover for the air filter gets screaming hot. I found a leak in my exhaust pipes last night. Heading out there now to remove pipes to check out where the leak is coming from. If anyone has experienced this kind of situation, please let me know what to do...before I shoot my bike!!
Welcome to the Crew, as @SnaykByte says you have joined a great mob of people. Thanks to my mates @SnaykByte and @jmck for the tag, my apologies for not getting back to you sooner.

Okay, first of all do not shoot your bike........ go and shoot your dealer/mechanic because they are taking you to the cleaners! You have a fantastic bike in the 1300 and by fitting up the Power Commander 111 and the BJ Hugger exhaust you have gone 2/3rds of the way to making a great bike better all you need is a BAK (Big Air Kit) to make it breath in better!

Now, as to the problems you're having with idle. This all comes down to the tune of the engine I suffered the same drama!!

The cure:-
Because of the Big Jug Hugger exhaust system is dual pipes (not two into one) and the Power Commander is designed to tune each cylinder individually the bike really needs to be placed on Dynometer. This is THE ONLY way the problem can be fixed.

My 1300 has individual tuned length pipes with the O2 Sensor discarded, a Power Commander IV fuel processor and a Barons BAK fitted up. A five hour dyno session and the end result was a huge improvement in power and acceleration, much smoother running at low speeds & improved fuel economy!! This was all achieved because each cylinder was tuned separately. The backfiring on gear changes was eliminated as was the intermittent rough and erratic idling.

My air filter gets hot because it is bloody close to the exhaust system (it is also close to the cylinders) and I think that the Huggers have a very large external diameter so the front one is probably running very close to the air filter!!!


To recap, my advice to you is to fit a BAK preferably a Barons - they are one of the best around for the 1300 and are reusable as the filter itself is basically a K&N, have the bike dyno tuned and you will be able to enjoy one of the best cruisers on the road today!

Gibbo
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