Cylinder # 3 has a misfire...#1) Defective coil on plug or the spark plug itself...#2) Contaminated fuel injector...See drawings below...The coil pack is the smaller of the two and sits to the rear of engine it is the most probable cause...Although the spark plug or the ignition wire (connection between plug and coil pack) could be at fault...so, before you invest in a new coil pack...Remove from both ends the wire from #3 and switch it with #2...if the fault code changes to p0302 that wire is bad...next Install a new set of plugs....Fault still present? replace the coil pack.....Unless recently changed new plugs and wires are a plus even if fault remains...saailer
Cost= about $90
I’m happy to help further over the phone at https://www.6ya.com/expert/david_6df67de3b14de867
SOURCE: does anyone know what the code po316 is on the
P0316 .... Engine Misfire Detected on Start-up (first 1000 Revolutions)
P0300b .. Random/Multiple Cylinder Misfire Detected
P0304b .. Cylinder 4 Misfire Detected
P0357 .. Ignition Coil G Primary/Secondary Circuit
P0353 .. Ignition Coil C Primary/Secondary Circuit
From codes you need new spark plus, Ignition Wires, and ignition coils
Testimonial: "this veihicle has the coils over the plugs so there is no ignition wires per say just a plug in with regular wires"
SOURCE: CODES-PO301-PO303-PO316- CHANGED PLUGS &
P0301 - Cylinder 1 Misfire Detected.
Causes:
- Improper spark plug at cylinder #1
- Insufficient compression at cylinder #1
- Incorrect fuel pressure
- The injector circuit is open or shorted at cylinder #1
- Fuel injector #1 may be faulty
- Intake air leak
Solutions:
- Perform Injector Service
- Replaced Spark Plug #1
- Replaced Injector #1
- Replaced Ignition Coil #1
P0303 - Cylinder 3 Misfire Detected.
Follow info from P0301.
P0316 - Misfire Occurred In The First 1,000 Engine Revolutions.
Causes:
- Damaged CKP sensor.
- Ignition System.
- Fuel Injectors
- Running out of fuel
- Fuel Quality
- Base engine
- Damaged Powertrain Control Module
Solutions:
Usually the P0316 is combine with a P03XX codes. The P03XX code indicates in which cylinder the misfire occurred.
SOURCE: Ford 2003 escape codes readed
Cauases or fault codes are not cut and dry, but here are the possible causes of codes P0316 and P0306 which are related codes.
P0316 - Engine Misfire Detected on Startup
Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
- Engine fails to start
- Engine runs rough
Possible causes
- Crankshaft Position (CKP) sensor harness is open or shorted
- Crankshaft Position (CKP) sensor circuit poor electrical connection
- Faulty Crankshaft Position (CKP)
- Ignition System
- Fuel Injectors
- Running out of fuel
- Fuel Quality
- Faulty Engine Control Module (ECM)
P0306 - Cylinder 6 Misfire Detected
Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
- Lack/loss of power
- Hard start
- Engine hesitation
Possible causes
- Faulty spark plug 6
- Faulty ignition coil 6
- Ignition coil 6 harness is open or shorted
- Ignition coil 6 poor electrical connection
- Clogged or faulty fuel injector 6
- Injector 6 harness is open or shorted
- Injector 6 poor electrical connection
- Improper spark plug 6
- Insufficient cylinder 6 compression
- Incorrect fuel pressure
- Intake air leak
Testimonial: "thanks , i will start with spark plug ,then the coil .or boot"
SOURCE: 2003 FORD ESCAPE CODES NEED TO KNOWN WHAT THEY MEAN PO316 ,PO306
PO316 is misfire on startup
PO302 is misfire on cylinder number 2
To find arc-over, start car at night, and look in the dark at the entire routing of the plug wire. I have seen where there was a faint glow the full length of a plug wire.
At a minimum replace the number 2 plug wire. Make sure it is seated on both ends and clean of corrosion.
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