You have a misfire on #3 for code p0303 & misfire for code p0316
Start cheaply. Replace #3 cylinder spark plug. If not, replace #3 cylinder wire. Lastly, replace the coil. Luckily I just changed my spark plugs and problem solved.
I have an 02 Taurus and I get code P0316, P0305, P0306, and P0304. I have already change the plugs, coil, and plug wires but obtain the same results from diagnostic reader. The issue I'm having is my engine runs really rough at idol but seems to run fine at higher speeds. I put a stethoscope to my injectors and it seems my two front ones, I think injectors four and five seem not to have much sound. It seems like I might just be hearing injector 6 from 4 and 5. I saw on a youtube video that a mechanic had the same code P0316 and P0304 and had replaced everything I did but found out it was a bad injector.
Should I try and replace the injector next?
SOURCE: I have a 2003 Ford Explorer that is misfiring with a code of p0300, p0303 and p0316
The 300 is random misfires & the 316 is misfires on the first
1000 revolutions,such as when the motor is first started
Your only working on cylinder #3 the PO303
If you have individual cop coils,replace that one
If you have a motor with a module for several cyclinders,
then you may be best to have a shop diagnose,so as
not to waste money on the wrong parts
SOURCE: 12 codes; 90174, p0171, p0175,p0300,p0301, p0302,
90174 (guessing it should be p0174 = system too lean)
92198 (guessing it should be p2198 = Oxygen Sensor Stuck Too Lean / Rich)
p0171, p0175 = system too lean (usually related to MAF Sensor)
p0301= Cylinder 1 Misfire Detected (Coil related most likely)
p0302 = Cylinder 2 Misfire Detected (Coil related most likely)
p0303 = Cylinder 3 Misfire Detected (Coil related most likely)
p0316 = Cylinder Misfire Detected (Coil related most likely)
p0420 = Catalyst System Efficiency Below Threshold
p2195, p2196 = Oxygen Sensor Stuck Too Lean / Rich (most likely the rubber hose from valve cover to throttle body
You may want to have your MAF changed, Coils changed, and your O2 Sensor checked. Also any one of those faults can also trigger another fault. I.E your O2 sensor could be could, but since it's misfiring, it's being triggered because the exhaust gases aren't what it should be. Hope this helps
Testimonial: "Thanks, you was very helpful. Since I got the codes the engine lock up on me. The car light comes on but the car would not start. I had it towed. "
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