Question about 2002 Harley Davidson XL 1200 S Sportster Sport

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Check engine light on momentarily

I changed my Ignition module, and coil, to a screaming eagle brand, my check engine light stayed on forever.

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You can rest the warning by unhooking the pos.+ batt. cable but it should be change in the programming so it does return. Mine does the same and keeps giving what HD calls a historic code miss fire on 1 coil. Some times it can be something as simple as aftermarket plug wires.

Posted on Sep 13, 2009

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My 1989 pontiac grand prix keeps stalling once it is warmed up after about 15 minutes of idle.


No, not the oxygen sensor. A couple of things you need to make clear. What light flickers, then stays on? That can't be a sensor light, it would have to be the "check engine light" or an engine temperature light (for like when your cluster has no temperature gauge, but just the "red light").
At any rate, the sensor you changed is not the engine temp. sending unit for the instrument panel. I believe on your '89 there would be two sensors for temp. One is the CTS for the engine computer, and the other is a sending unit for the dash, probably a 1 wire connector. It could be at fault, but it wouldn't cause stalling, I do not think anyway.
If it stalls and won't restart until cooled, this is a symptom of loss of ignition (spark) caused by either a faulty coil, or faulty Ignition Control Module (the coil controller), or last a faulty Crank Position Sensor (this sensor used by computer to determine ignition spark timing). You could test if ignition is lost, by checking for spark right after the engine warms and then stalls. If you have no spark to a spark plug right after it stalls, this is the reason for stalling. Usually it is the crank sensor, rather than the ignition control module or an ignition coil. Your car has 3 coils anyway in a "coil pack", so if one coil went bad, you'd still have two good coils, but engine would only be firing on four of the six cylinders-could easily stall a car.
You should check for trouble codes whenever you have a problem. A code might have been set. Easy to check for codes on your car, just ask if you don't know how-only takes a jumper wire or even a paper clip works. good luck.

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What make , model an year vehicle ? Is it coil on plug ignition system or dis ignition . Did you test for battery voltage at the coil or coils ? Is the powertrain control module controlling the coils ? Does it have a ignition control module ? Automotive Engine Ignition Coil Testing Repair How to test an ignition coil and ignition module with test light

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I have a 1988 harley davidson fxr superglide with a 1340 cc engine. It is equipped with a screaming eagle ignition control module. bike will crank but does not start. how can I know if it is in fact t


If you have the old ignition module, try putting that back in and go from there. I would also check my fuses. and coil and see if you have spark.

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I gotta '76 IronHead Sporty....How do I install an electronic ignition module (does away with fly weights & points) and a 3ohm Screaming Eagle coil?


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1 Answer

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No spark can result from a bad coil or bad ignition module. If there is electrical signals at the primary coil but no spark then there is a problem with a coil. if there is no electrical signal at a primary coil then there is a problem with the ignition module. Here is the image of your coil. The 2 metal screws sticking out for wiring are the terminals of the primary coil. Need to test that to determine the root cause of the problem. Good Luck.8cf6119.jpg

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How to check coil and ignition module screaning harley


Check the fuse for the "igniton" circuit. Make sure you've got voltage going to the coil. If not and the fuse is good, check the bank angle switch. The bank angle switch is on the backside of the oil tank. That's the only information that I have. Good luck.

Sep 29, 2009 | 2002 Harley Davidson XL 1200 S Sportster...

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2004 FLHTC- When air temperature gets above 80 degrees and after ridden about 30 minutes, idles rough, to the point of dying and backfiring. Have replaced MAP sensor, ignition coil and plug wires. Had a 95...


Is your check engine light on? If yes, get a HD tech to read the trouble codes or do it yourself if you have access to a service manual. It will give you a starting point. My best guess at this point would be a failing ignition module. Are your plugs the correct color? White center with a gray ring where the threads end shows correct air/fuel ratio. Check fuel pump pressure. Make sure it's not something simple like a plugged fuel filter, dirty air cleaner, etc. Unfortunately, HD fuel injection systems are not very reliable.

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1 Answer

Ultra Classic has miss when cold and a vibration


Hi Lcampeau12, and the usual suspects are:
1. Spark plugs in bad condition or partially fouled.
2. Spark plug cables in bad condition or leaking.
3. Spark plug gap to close or to wide.
4. Faulty ignition coil, module and or sensor.
5. Battery nearly discharged.
6. Damaged wire or loose connections at battery terminals especially the ground cable at BOTH ends, ignition coil, or plug between ignition sensor and module.
7. Intermittent short circuit due to damaged wire insulation.
8. Water or dirt in fuel system, carburetor or filter.
9. Fuel tank vent system plugged or carburetor vent line closed off.
10. Carburetor controls misadjusted.
11. Damaged carburetor or intake seals.
12. Loose or dirty ignition module connector at crankcase.
13. Faulty MAP, CKP, and or CMP sensors.
14. Incorrect valve timing.
15. Weak or broken valve springs.
16. Damage intake or exhaust valve.
For a prime suspect please visit website below and good luck:
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if you origionaly started running on one cylinder that's promising sounds like it your timing also check your magnito.... lisa

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