What causes no spark in the ignition module?
Specifically: You have a No Spark Condition from all of the spark plug wires. No fuel injector pulses from any of the fuel injectors. This is usually caused by a bad crank sensor or a bad module. Your starting point is TEST 1. You have spark from all of the spark plug wires.
Why does the timing of fuel ignition change?
In order to have the same result, the fuel must be ignited much sooner in the compression stroke. As a result, the timing moves to 32 degrees before top dead center which allows the fuel to be ignited early enough so that it is burning while the piston is rising and completely burnt when the piston reaches top dead center.
How to troubleshoot a Ford 3.0L no start condition?
The PIP Sensor (which is what Ford calls the crank sensor) is functioning correctly. The ignition coil is good. The crank sensor is functioning correctly. Your next step is to verify fuel pressure. Go to: No Start 2: Checking Fuel. CASE 2: Spark was NOT present in all of the cylinders.
What causes no fuel injector pulses in the ignition module?
No fuel injector pulses from any of the fuel injectors. This is usually caused by a bad crank sensor or a bad module. Your starting point is TEST 1. You have spark from all of the spark plug wires.
Can a Ford PowerStroke 7.3 no start be fixed?
For the 7.3 it is cheap/easy to change as a first measure to rule out. Worst case its not your problem and you have a spare for the glove box because eventually you WILL need one.
The PIP Sensor (which is what Ford calls the crank sensor) is functioning correctly. The ignition coil is good. The crank sensor is functioning correctly. Your next step is to verify fuel pressure. Go to: No Start 2: Checking Fuel. CASE 2: Spark was NOT present in all of the cylinders.
Why does my Ford OBS 7.3 not start?
At least on the OBS 7.3 the fuse for the PCM and the fuel bowl heater are on the same circuit so if the heater for some reason shorts out it blows the fuse for the PCM. This would cause the WTS light on the dash to not come on so if you have that symptom this is one major culprit.
Where to find ignition coil on Ford 3.0L?
You can find the ignition coil here: How To Test The Ignition Coil (Ford 2.9L, 3.0L, 3.8L). If the PCM is not activating the ignition coil, this usually means that the ignition control module is fried. Test the ignition control module.
What makes the ignition coil fire off spark?
If you’re wondering what the heck is a switching signal: It’s the turning On and then Off of the Ground of the Primary Voltage (the fancy mancy name for 12 Volts) flowing thru’ the ignition coil. It’s this Switching On and Off of the Ground that makes the ignition coil fire off spark.
What causes a car to not start test 3?
Fuel injector pulses are present for the fuel injectors. This is usually caused by a bad module not providing the PIP signal. Your starting point is TEST 3. The car starts and runs but runs with 2 dead cylinders.
Why is no spark coming out of my spark plug?
If you Ford (or Mercury) car or truck still has NO SPARK coming out of any of the spark plug wires, this could possibly due to three things: Bad spark plug wires. Bad coil pack.
Can a bad coil pack cause a misfire?
CASE 2: You got spark from only one coil pack tower. This result confirms that the ignition coil is bad. Replacing the ignition coil pack will solve the misfire condition and the misfire code lighting up the check engine light (CEL) on the instrument cluster.
Why is no spark coming out of coil pack?
CASE 1: If the test light lights up. This result lets you know that the coil pack is receiving power and that the power circuit requires no further testing. If you Ford (or Mercury) car or truck still has NO SPARK coming out of any of the spark plug wires, this could possibly due to three things: Bad spark plug wires. Bad coil pack.
If you’re wondering what the heck is a switching signal: It’s the turning On and then Off of the Ground of the Primary Voltage (the fancy mancy name for 12 Volts) flowing thru’ the ignition coil. It’s this Switching On and Off of the Ground that makes the ignition coil fire off spark.