Question about 2001 Harley Davidson FLSTC - FLSTCI Heritage Classic

2 Answers

Idles high then dies and won't start

I have a 2001 88 twin cam. After riding for awhile when I come to a stop, my bike idles gigh for a few seconds then dies. I have to let it sit for about 5 minutes then it starts right up. I have already changed the fuel filter.

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  • Chris Campbell
    Chris Campbell May 16, 2016

    check your reeds, make sure the gaskets are good and not torn or ripped, and make sure the reed valves arent chipped, cracked or broken. also clean your carbs. start with that.

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2 Answers

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  • Harley Davidson Master
  • 43,096 Answers

Hi, Jimmy and the usual suspects are:
1. Throttle cables improperly adjusted or pinched.
2. Idle adjusting screw needs to be backed off.
3. Intake system air leak.
4. Fast idle choke ramp is not releasing.
5. Broken throttle return spring.
6. Damaged diaphragm or slide.
7. Faulty MAP, TPS, ATS, O2, VSS sensors or wiring/connector
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Posted on May 16, 2016

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  • Master
  • 409 Answers

Check for inlet air leak...

Posted on May 08, 2014

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Posted on Jan 02, 2017

wd4ity
  • 4565 Answers

SOURCE: High Idle On Start-up.

Most fuel injected motorcycles do start up in a "fast idle" mode. Although I don't know much about fuel injection on Harleys (H-D will not tell you much about it unles you are one of their technicians), I don't think the system is equipped with an engine temp sensor. Since the crank case sensor get it's pulses from pockets cut into the outer edge of the left side flywheel half, the sensor will have oil on it.

Posted on Sep 24, 2009

v2iper
  • 150 Answers

SOURCE: High idle on start-up

Its your idle senser sits on top of the manifold u will see it looking at u when u take off air filter cover. Little black plastic.plug in.

Posted on Dec 20, 2009

Foodcritic25
  • 7 Answers

SOURCE: Even after a 10 minute

Sorry but it's now all computer controlled. So, it's fuel injected! The Harley-Davidson ESPFI system is known as a Speed/Density, Open Loop, Sequential Port Fuel Injection system, that controls both fuel flow, and spark timing.

So the motor is cold, and you turn the ignition on, flip the start/run switch to run. The first thing you hear is the in-tank fuel pump pressurizing the fuel rail. If you listen real close, you'll hear the Idle Air Control (IAC) "stepping" into position. Even if you are real fast, the ECU already knows everything it needs to know from all of the sensors. You hit the starter button, the motor begins to crank over. The ECU sees the low RPM, and quickly goes to the Cranking fuel Table, increasing the Injector pulse width, allowing more fuel to get the motor started. At the same time, the ECU tells the IAC to open, allowing enough air into the motor for start and idle. (Throttle body blade is closed). The motor starts to run, and the ECU sees the higher RPM from the Crank Postition Sensor, and switches over to the Warm-Up Enrichment Table. This table eventually decays to nothing, as the motor comes up to full operating temperature. There's too much going on to put a finger on just one thing. Need to put it on a computer and have it checked out. Clear as mud, right! I've got a 1990 1200 FXR None of the above applies to mine.

Posted on Sep 15, 2010

wd4ity
  • 4565 Answers

SOURCE: when i start the bike

Black smoke indicates that your mixture is way too rich. Now, you didn't say what carb you're running, stock or aftermarket. But, what it sounds like to me is the needle and seat in the carb is leaking fuel and overfilling the float bowl. When you're running down the road, you'll using enough fuel so that the float bowl does not overfill. When idling, you don't use as much fuel, the bowl overfills, and fuel flows into the carb creating a very rich mixture. Is you overflow hose that connects to the bottom of the float bowl connected, clear and open? If so, turn the petcock on without the engine running. If the overflow is clear and the needle valve is leaking, you should see fuel start to flow out of the overflow hose. This is very important that it do this. If the overflow hose is blocked and you forget to turn your petcock off, you could wind up with a couple of gallons of fuel in your engine. It will leak out of the float bowl, into the carb past the intake valves, past the rings and into the engine. I've also seen it get into the primary drive case as well. I'd put a new needle in the carb and check the float setting according to the book. it's sets with the carb on an angle if the carb is the original Keihin CV.

Good Luck
Steve

Posted on Jan 30, 2011

wd4ity
  • 4565 Answers

SOURCE: i have a 2005 harley davidson sportster xl 1200

If the carb is adjusted correctly, the engine will not idle without the choke when cold. I will usually take at least 3 to 5 miles of riding to get the engine warm enough to idle by itself without the choke. If your bike is a full operating temperature, it should idle at about 1000 RPM. If it's idling higher than this, you need to slow it down a bit.

Remove the air filter cover and look at the top right side of the carb. You'll see a screw there . This is the throttle stop screw. Turn the screw counterclockwise to lower the idle speed to 1000 RPM or so. Blip the throttle and let it settle back to idle. Reset it if necessary. Once set, put the air cleaner cover hand on.

Posted on Mar 15, 2011

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