I changed the plugs & wires & I still get codes PO 316, PO 300, PO 301, & PO 305, What does this mean & what could be the sollution?
These codes are making me lean towards the ignition coil pack.My stepson's 2001 Sable 3.0 v6 had one cylinder misfiring(5-code P0305),which shares a coil with cylinder 1(code P0301).I diagnosed it by trading wire 1 and 5 at the coil,and the code changed to P0301.You have codes for the two cylinders on the same coil,so this is most likely it.(these codes would also trigger P0300(Multiple Misfires Detected) and P0316(Misfire Detected First 1000 Revs)).
SOURCE: po 305 misfire
it is a misfire on cylinder 5 it can be caused by low fuel pressure or a defective coil or bad injector, it could also be valve adjustment on that cylinder. Please rate me for the help I have given and if you need more info just post and I Will answer.
SOURCE: my check engine light came on 2004 ford taurus had
P174 means Oxygen sensor was slow in switching Single, Right
or Rear HO2S - Fuel control
P171 means Oxygen sensor not switching - system was at adaptive
limits - Single, Right or Rear HO2S - Fuel control
Visit http://www.troublecodes.net/Ford/
for a comprehensive code listing for your car.
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SOURCE: 2005 Taurus Program Codes PO 300 and PO 316
May need to clean the egr valves because if one is stuck then the other bank would be enriched to make up the difference .In order to reset the computer when your done is unhook battery and then reconnect. But realize some radios are subject to needing a code to make them work again because of a theft sensor. Here are some a few sensors and what happens when the don't work right.
ECT sensor
symptoms
Potential Symptoms
Symptoms of a P0118 could include:
* Very poor fuel economy
* A no start condition
* Vehicle may start, but run very poorly, blowing black smoke, running very rough and misfiring
* Illumination of MIL
TPS sensor
Symptoms of a P0121 trouble code could include:
* Malfunction Indicator Lamp
(MIL) illumination (Check Engine Light or Service Engine Soon light)
* Intermittent stumble on acceleration or deceleration
* Blows black smoke on acceleration
* No start
EGR valve
Usually a fault in the control circuit, will leave no noticeable symptoms other than the Malfunction Indicator Lamp (MIL) illumination. However, if the EGR control solenoid
is stuck open due to debris, etc. the code may be accompanied by misfire under acceleration, rough idle, or engine dying altogether.
po171
You will more than likely not notice any drivability problems, although there may be symptoms such as a lack of power, detonation (spark knock), and/or a hesitation/surge on acceleration.
Causes
A code P0171 may mean that one or more of the following has happened:
* The MAF (Mass Air Flow) Sensor is dirty or faulty. Note: The use of "oiled" air filters may cause the MAF to become dirty if the filter is over-oiled. There is also an issue with some vehicles where the MAF sensors leak the silicone potting material used to protect the circuitry.
* There could be a vacuum leak downstream of the MAF sensor.
These are the main ones
God Bless Greg
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