I have replaced the crank sensor,ignition module,plugs/plug wires,coils,and o2 sensor.The light came on flashing this time.Mechanic says the computer shows 'random misfiring' but it's running fine.He sugests I take it to an electrical man to check wiring and computer.What else could it be?
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Your spark plug wires go to coils, coils sit on top of ignition module.You have two crank sensors, if crank sensor issue, check the 7x crank sensor, on back side of engine block, down low, two wire connector, wire colors, yellow and purple.
The ignition system on your 5.0L uses a distributor type system and will include the following components:
Ignition control module (ICM). Depending on the year of your specific Ford, it'll have a inner-fender mounted ignition control module or a distributor mounted ignition control module. hot sure which you have.
Ignition coil. you replaced it.
PIP (Profile Ignition Pickup) sensor. This is Ford's name for the crank sensor and is mounted inside the distributor. The most common name for this component is the pick up coil.
Distributor cap and rotor. you replaced
Spark plug wires. you replaced.
The thing to keep in mind about the ignition system is that all engine cylinders must get spark and the one thing that will stop the ignition system from creating spark on a wholesale scale is a BAD crank sensor.Have you pulled a plug then using some insulated pliers grounded it to the vehicle and turned it over to see if you have spark, that'll tell you alot.takes two people of course.Best of luck and hope this helps.
HI there code P0320 is ignition-distributor engine speed input circuit malfunction . IS your Engine Light ON or Service Engine Soon Warning Light if so check for lose wire connections At Crank Position Sensors =if OK Check for Arcing secondary ignition components,coil, wires and plugs.=if OK Check your battery for Low battery charge.=if OK Replace your crank position sensor .
The ignition engine speed sensor input signal to Powertrain Control Module (PCM) or Electronic Control Module (ECM) is continuously monitored. The test fails when the signal indicates that 2 successive erratic profile ignition pickup (PIP) pulses occurred.
Symptoms: - Engine Light ON (or Service Engine Soon Warning Light) - Lack/Loss of Power - The engine may be harder to start - The engine may stumble or stall
When is the code detected? The P0320 code is triggered when 2 successive erratic PIP pulses are detected.
Possible Causes: - Loose wires/connectors - Faulty Crank Position Sensors - Arcing secondary ignition components (coil, wires and plugs) - Low battery charge - Powertrain Control Module
Possible Solutions: - Resecure loose wire or connectors - If battery charge is low, recharge or replaced battery - Replaced crank position sensor - Replaced starter motor
is the your car engine cranking when you try to start, first check spark plugs ignition coils, remove one ignition coil and spark plug fix the spark plug in to the ignition coil then connect ignition coil to wiring and keep spark plug body touching on ground of engine head mettle parts, ask some one to crank engine then you can see is the plug sparking or not, do the same way to all the coils and plug otherwise you have to buy a ignition spark tester, is the all the coils and spark plugs are OK then check the fuel pump, it's sitting in under rear seat, before that do one thing disconnect oxygen (O2) sensor wiring and crank engine, the thing is if your oxygen sensor completely dead fuel pump will stop working, if engine start after disconnect O2 sensor, replace new O2 sensor, otherwise need to check fuel pump relay fuse and fuel pump. is this information helped you? please vote me and give a comment.
Had any check engine lights come on before you made any changes?
The ignition system uses an ignition coil, crankshaft and camshaft angle sensor along with the car's computer or PCM (power control module). This system can stop working due to a failed ignition module or crankshaft angle sensor.
Testing the ignition system is an easy job that takes about five minutes and can be done using a test light or an extra spark plug. Connect a test light to ground and with one of the spark plug wires or coils disconnected. Crank the engine over while holding the tip of the test light about 1/4 inch from the wire or coil terminal. Keep your hands clear of the test area to avoid accidental shock (non lethal). You can also insert a spark plug into the coil or wire and hold it against a metal ground. You should see a light blue spark in the gap .. which tells you the system is working. If no spark is present suspect that the crankshaft sensor needs replacing which is the most common problem.
But you could also check your relay/fuse box and see if any ignition related relays are bad. One way to check a bad relay is to find another one in the box that is exactly the same ans switch them ... and see what happens.
Good luck on your troubleshooting