Question about 1998 Ford Expedition

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Changed plugs and wires, injectors, has mis and code p0305 compression #1 145, #5 155 1996 ford explorer 4.0l

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Definitely a cylinder #5 misfire. Did you reset the computer error log by disconnecting the battery for several minutes, then reconnecting?
If so, the problem could very well be in the electronic distributor. Check for dirt, arcing, cracks, etc.

Posted on Jul 18, 2009

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2006 taurus p0305


P0305 is telling you that number 5 cylinder is missing. It will need to be further diagnosed, plug, wire injector, compression test ect.

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2004 Sorento began with code P0305, cyl #5 misfire. Inspected and replaced plugs, wires, and coil pack on cyl #2. Repair shop told me cyl #5 injector bad so they replaced. Still has misfire.I suggeste


If you had code P0305, I don't know why they would have done anything to the #2 cylinder but if they have already replaced the plugs, wires and injector; here are a few more items to check:
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What are codes p1401 p0302 p0305 p1409 p0301


P1401 Differential Press Feedback EGR Circuit High Input
Your EGR port is plugged. Replace your EGR valve, and clean the ports
A code P0302 may mean that one or more of the following has happened:
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  • Faulty fuel injector
  • Burned exhaust valve
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  • A code P0305 may mean that one or more of the following has happened:
    • Faulty spark plug or wire
    • Faulty coil (pack)
    • Faulty oxygen sensor(s)
    • Faulty fuel injector
    • Burned exhaust valve
    • Faulty catalytic converter(s)
    • Running out of fuel
    • Poor compression
    • Defective computer
    • A code P0301 may mean that one or more of the following has happened:
      • Faulty spark plug or wire
      • Faulty coil (pack)
      • Faulty oxygen sensor(s)
      • Faulty fuel injector
      • Burned exhaust valve
      • Faulty catalytic converter(s)
      • Running out of fuel
      • Poor compression
      • Defective computer
      • A code P0302 may mean that one or more of the following has happened:
        • Faulty spark plug or wire
        • Faulty coil (pack)
        • Faulty oxygen sensor(s)
        • Faulty fuel injector
        • Burned exhaust valve
        • Faulty catalytic converter(s)
        • Running out of fuel
        • Poor compression
        • Defective computer
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2011 dodge charger eng miss code p0305


Stan the Man,here's a link to your P0305 code,go thru the causes and see if it is there,do you have a warranty,take to dealer,they should fix for free.

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I am getting two codes of P1451 and P0305 on the code reader. Have tried diferent things but still there. HELP!!!!!


Problems are not related. Concentrate on the P0305 first.
Cylinder 5 miss fire. Go with #1, #2 and #8 first. one at a time
The other code is gonna take a mech with some test equip.
Good luck
  • Faulty spark plug or wire
  • Faulty coil (pack)
  • Faulty oxygen sensor(s)
  • Faulty fuel injector
  • Burned exhaust valve
  • Faulty catalytic converter(s)
  • Running out of fuel
  • Poor compression
  • Defective computer

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1996 explorer 6 cyl getting a p0305 code


cylinder no. 5 misfire detected. Check the spark plug, the spark plug wire, the fuel injector, The fuel injector o-ring (if the o-ring is bad, no compression). You can swap the spark plug or wire with a good cylinder and if the problem moves over then you've found your problem. Same rule with the injector.

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Dodge obd code p0305


The DTC (Data Trouble Code) P0305 is the generic OBD-II DTC for "Cylinder 5 Mis-fire Detected", and it means that the OBD-II control unit has detected a problem with the #5 cylinder.

The problem could be a faulty spark plug, or a spark plug wire for the #5 cylinder, or the coil for that cylinder could be faulty (2.7 liter), or the distributor or distributor cap could be faulty (3.0 liter), or the fuel injector for the #5 cylinder could be faulty.

Before you look for any electrical problems causing the mis-fire on the #5 cylinder, first do a compression check to be certain that the mis-fire is not caused by a mechanical problem.

Here are the firing order diagrams for the 2.7 and the 3.0 liter enginesto help assist you.


2.7 liter

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3.0 liter

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OBD system diagnostic trouble codes? what do they mean? P0123 P0138 P0205 P0305 P0300


po123-tps curcuit high---po138-02 sensor high volts bank 1 sensor 2,--po205--injector curcuit open cylinder 5,---po305-- misfire cylinder 5,--po300 random/multible mis fire,

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96 ford explorer code p0301 mis fire 1


Sounds like either a bad plug wire, or coil pack. This is about all that would cause the misfire.

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