Unreliable Fuel Gauge & Odometer Countdown - Page 3 - Harley Davidson Forums: Harley Davidson Motorcycle Forum
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post #21 of 27 (permalink) Old 07-03-2012, 11:40 AM Thread Starter
The Black Knight
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No, I've been on the fence about picking up the service manual. With so much of today's product being on-board computer driven I don't know how much actual service the owner can do in this area.
I don't have any after-market items on the bike with the exception of my 'Old No. 7' gearshift peg.
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post #22 of 27 (permalink) Old 07-03-2012, 11:50 AM
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Not to sound like a jerk... but buy the manual.. look for a used one on Ebay or Amazon..

At the very least you can learn more about it and at least have point of reference even if you don't service it yourself.


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post #23 of 27 (permalink) Old 07-03-2012, 12:31 PM
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Originally Posted by jestoever View Post
Thanks, misin.
So now the plan to remedy the problems is...
I read somewhere that one way to "fix" the problems is to cycle the ignition control on and off 5 or 6 times waiting until the idiot lights go out each time before turning the switch back off. This sounds too easy and not mechanical enough to work.
It really is that simple. Cycling the ignition recalibrates the starting position for that and the idle air controller.

It may be that the only purpose for your life is to serve as a warning to others.

It may be that the only purpose of your life is to serve as a warning to others
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post #24 of 27 (permalink) Old 07-04-2012, 02:20 PM Thread Starter
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Well, I'm all for simple. Someone once told me "if the answer is simple then God is talking to ya' and I'll go with that.
I reset the OBDC codes and then cycled the ignition switch a half-dozen times. Then put about 30 miles on the bike on the highway. No problems and no new codes.

Thanks everybody.
(And, misinlink, the manual's on its way)
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post #25 of 27 (permalink) Old 07-18-2012, 08:54 AM
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Originally Posted by facn8me
I know them new fangled gas checker thing a ma jiggys are supposed to make life easier yet they don't. Here is what I have done on every motorcycle I have ever owned with a trip odometer. Reset it to zero at each fill up. I need a gas station at 160 miles, I'm desperate at 174...

I have always used that method since the gas guage is unreliable. I know that I can go 170 miles between fills ups so I always stop @ about 150 miles. However, I got fooled a couple weeks ago. At 130 mile light came on and by 145 I was out of gas! Luckily I coasted into the station..lol. Anyone who has rode across Idaho knows that sometimes fuel stops are far and few in between. Sure surprised me. I have owned this bike since new in 06 and have NEVER experianced this. Going to be going on a long trip here soon so I'm thinking about taking one of the gas cans for saddle bag. Hate to give up the room but it may be a good idea.
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post #26 of 27 (permalink) Old 11-11-2012, 07:35 PM Thread Starter
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Okay, so it's been 4 months since this problem, the P1511 and P2135, first appeared. Hasn't happened since except that today it happened 3 times. Each time when I went to start the bike the engine idiot light remained lit and starting the bike resulted in no throttle response.

I did the on/off cycle thing about 20 times until the idiot light went out and it ran fine, until the next time I shut off the bike.

I don't see anything out there as far as a recall notice or an advisory. Replacing the TPS would cost about $30.00 and I'm wondering if that might resolve the problem.

Any thoughts?
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post #27 of 27 (permalink) Old 11-21-2012, 03:13 PM
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Try disconnecting the Throttle control module and reconnecting it several times. Spray some contact cleaner or a little alcohol on the pins, add some dielectric grease, reconnect and see if problem comes back. Worked for me and problem hasn't returned.

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