2003 Harley Davidson FLSTF Fat Boy no spark

03 Harley fat boy no spark, I tested my coil and the primary is 0.6 and the secondary is 6,200. crank sensor volt positive ac volt, power to the coil from the switch but not power, could it be ignition mod.

5 Related Answers

hosea malika

80 Answers
Posted on Aug 18, 2008

SOURCE: ignition coil for 1993 civic

best way to test is connect to car and see if it gives spark with engine turning, because it gets ground pulse from the distributer,if pulse id not coming to ignition coil, then you need to change distributor.

Colin Stickland

22516 Answers
Posted on Sep 08, 2009

SOURCE: 2001 ford mustang 3.8, standard. no secondary

not sure on this because no mustangs in spain but from the symptons described ??had similar with escort and focuses and the only soloution was the dealer ,its the factory immobilisor playing up now i know how to by pàss it ,but not every customer wants it by passed so then its dealer job with dealer prices and i just smile when they tell me how much they paid

Marvin

85242 Answers
Posted on Sep 27, 2010

SOURCE: have 2005 tribute it quit

U have a defective wiring harness or a blown fuse for the coil circuit, check all fuses replated to the electronics for the engine in both the fuse boxes

Anonymous

79 Answers
Posted on Oct 31, 2010

SOURCE: 1990 buick lasabre with a

1. Monitor the 5v reference, Gray wire to the Throttle Position Sensor (TPS) with a Digital Volt Ohm Meter (DVOM) set to the MIN/MAX setting.

2. Monitor the TPS signal circuit, Blue wire with a DVOM. Voltage should range smoothly from approximately 0.44 to 5.0 volts as the throttle is opened.

3. Tap test the Electronic Control Module (ECM) and see if the codes come back or if the engine reacts.

possible causes wiring or Powertrain Control Module (PCM)

Anonymous

2382 Answers
Posted on Apr 20, 2011

SOURCE: What is the spark plug

The spark plug gap is between .038 to .043

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2003 Harley Davidson FLSTF Fat Boy only runs with the choke on

Duplicate question already answered

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Jul 09, 2018 • 2003 Harley Davidson FLSTF Fat boy

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I shut of my 2000 Fat Boy and 20 mins later tried to start it but no fire. Turns over but no spark?

Ignition Coil Primary Circuit Test
Remove the coil. THEN set your ohmmeter scale to RX1 and place ohmmeter leads on the primary coil windings A (front of coil) to B (middle of coil), B to C (front of coil) and check for primary coil winding resistance which normal resistance range is 0.5-0.7 ohms. If primary resistance is not within this range check out test results below.

Ignition Coil Secondary Circuit Test
With the ignition coil removed from the motorcycle and the ohmmeter set to the RX1K scale place the ohmmeter leads on the secondary coil windings B (middle terminal) to
R (rear secondary terminal/socket), B to F (front secondary terminal/socket) and check for secondary coil winding resistance which normal resistance range will be 5.5-7.5K ohms. If secondary resistance is not within this range check out test results below.

Test Results
A low resistance value indicates a short in the coil winding which requires coil replacement.

A high resistance value might indicate that there is some corrosion/oxidation of the coil terminals requiring the coil terminals to be cleaned and the resistance test then repeated and if after the test is repeated the resistance is still high after the terminals were cleaned the coil must be replaced.
If there is an infinite ohms or no continuity) resistance value the coil is open and must be replaced.

If you have spark, it sounds like either the sensor in the timing cavity of the engine is bad or the electronic ignition unit is bad.

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Apr 30, 2014 • 2000 Harley Davidson FLSTF Fat boy

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