Question about 2003 Lincoln Navigator

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I keep getting a P0307 code, miss fire detected on cylinder # 7. Replaced spark plug and COP with new parts. Getting the same error code. Thinking maybe it is the fuel injector. How can I test the injector with out moving it to another location and seeing if the fault moves?

Posted by Anonymous on

6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

emissionwiz
  • 75197 Answers

SOURCE: 2004 navigator

Have you used a NOID light to see if injector is getting a signal, the NOID lite is a little test tool that plugs in the injector connector and flashes when eng is running is signal is present, a vacuum leak can cause this as well, also the injector can be faulty, check the compression 1st, then do the other tests, I was a dealer tech so I had access to a piece of test equip called a SBDS, it could quickly give me all the info about the miss-fire, most case knew the problem in 10 minutes, of course the machine cost $75,000 so in a independent shop it is out of the question. Good Luck

Posted on Sep 12, 2008

  • 91 Answers

SOURCE: Cylinder location diagram for a 2004 lincoln aviator

It could be a fuel injector problem on cylinder 5. Sounds like a failed injector. Run a compression check on that cylinder to make sure you have at least 100psi. Anything less than that would lead to either a burnt valve or a piston ring issue. Doing a compression check first will save you a lot of money.

Posted on Apr 10, 2009

ZJLimited
  • 17970 Answers

SOURCE: I have the spark plug firing order for my 2002

2002 Lincoln Town Car 4.6 liter V-8 VIN "W"

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Hope this helps (remember to rate this answer),

Posted on Oct 13, 2010

  • 223 Answers

SOURCE: 1999 Lincoln Towncar: erratic miss while

this is a common problem with these ford engines. this particular ignition system is a coil on plug system meaning there is a individual ignition coil on every spark plug.i am going to assume you don't have any cracked spark plugs, and they are gapped correctly and you would have a dtc(diagnositic trouble code). there are two common issues 1- you have faulty ignition coil boots which is allowing the current to arc through the boot. 2- faulty ignition coil. with no check engine light i would recommend allowing your lincoln, ford dealer to perform a diagnostic scan as they can test your individual ignition coils to pinpoint the fault. coil may be breaking down under load and or heat. your local independent repair shop diagnostic scanners are not capable of testing individual ignition coils and in turn they may recommend replacing multiple coils until problem is fixed. hope this helped, if more info is needed feel free to contact me.

Posted on Dec 08, 2010

Goofguyster
  • 379 Answers

SOURCE: my 1995 town car get no fire to spark plugs ,replaced crank sencer and icm still no fire thing maybe ecm not sure

your distributor could be bad from the pickup coil or the ignition module or the distributor its self id replace the whole distributor including the cap and spark plug wires that should it

Posted on Sep 25, 2012

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3 Answers

2000 Jeep Grand Cherokee Laredo 4.7 liter code reads p0307 turn the car off when I turn it back on started misfiring and sputtering and wont stay started now help


code p 0307 is misfiring on no 7 cylinder ====causes --- engine mechanical fault ---wiring---ignition/ fuel system--injector --ECT/MAF sensor---ECM
look for low fuel pressure or ignition control module

May 31, 2016 | 2000 Jeep Grand Cherokee Laredo

1 Answer

2004 ford taurus 3.0 dohc missing ecm codes po351 po352 po354 replaced coils and plugs all new gaskets checked all hoses no leakes.


Do you know for a fact cylinders one two and four are firing ?
The codes are for circuit problems with the coils on those cylinders. The coils get power from the PCM power relay and the engine computer grounds each coil to fire the spark plug. The codes mean the coils are not firing, and since you replaced the coils there may be too much resistance in the circuits coming from the computer.

Feb 28, 2014 | 2004 Ford Taurus

1 Answer

I'm getting codes, p0301 and p0316. I replaced the spark plugs and cylinder 1 spark plug was wet when i removed it. What could it be?


Code 301 is a cylinder miss on cylinder one, and 316 is a miss detected during startup which is probably caused by code 301.
If the plug is firing, you could have an injector problem on that cylinder.

Apr 22, 2013 | 2002 Mercury Sable

1 Answer

When runing engine has missfire on #1 and#7 cly At ilder or highway speed some time it run with no probem but back fire throw intake and set codes.


DTC P0301 & P0307 Code - Cylinder #1 & #7 Misfire Detected
A P0301 (also P0307) code means that the the car's computer has detected that one of the engine's cylinders is not firing properly. In this case it's cylinder #1 (also cyl #7).

Symptoms may include the engine may be harder to start, the engine may stumble / stumble, and/or hesitate or other symptoms may also be present. Other tips to solve it in the previous fault code link.

A code P0301 and P0307 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

Hope this helps and just keep in mind that your feedback is important and I'll appreciate your time and consideration if you leave some testimonial comment about this answer.

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Oct 31, 2011 | 1999 Dodge Ram

1 Answer

Missing,viborating


Misfire could be a number of things:
a) spark plugs - change them if used over 15K miles - inspect/regap.
b) spark plug wires - change them if over 15K miles - inspect
c) ECM (electronic control module) - test with HEI (high energy ignition) tester.

The vibrating tells me that the engine is running on less than its normal compliment of cylinders - the shaking is produced by the imbalance caused in the engine by one (or more) cylinder(s)
not firing at all.

The "Check Engine" light probably is coming on due the the misfire condition. Go to Pep Boys or
Advance Auto Pats, where they'll tell you (free) your codes causing the "Check Engine' light to be
lit - the code coming from your truck's computer will probably be one or more of:
P0300 - Random/Multiple Cylinder misfire detected
P0301 - Cylinder 1 misfire detected
P0302 - Cylinder 2 misfire detected
P0303 - Cylinder 3 misfire detected
P0304 - Cylinder 4 misfire detected
P0305 - Cylinder 5 misfire detected
P0306 - Cylinder 6 misfire detected
P0307 - Cylinder 7 misfire detected
P0308 - Cylinder 8 misfire detected
P0313 - Misfire detected with low fuel

Jun 23, 2011 | 2009 Ford F-150

1 Answer

Vehicle missing,shaking,engine light comes on


Misfire could be a number of things:
a) spark plugs - change them if used over 15K miles - inspect/regap.
b) spark plug wires - change them if over 15K miles - inspect
c) ECM (electronic control module) - test with HEI (high energy ignition) tester.

The shaking tells me that the engine is running on less than its normal compliment of cylinders - the shaking is produced by the imbalance caused in the engine by one (or more) cylinder(s)
not firing at all.

The "Check Engine" light probably is coming on due the the misfire condition. Go to Pep Boys or
Advance Auto Pats, where they'll tell you (free) your codes causing the "Check Engine' light to be
lit - the code coming from your truck's computer will probably be one or more of:
P0300 - Random/Multiple Cylinder misfire detected
P0301 - Cylinder 1 misfire detected
P0302 - Cylinder 2 misfire detected
P0303 - Cylinder 3 misfire detected
P0304 - Cylinder 4 misfire detected
P0305 - Cylinder 5 misfire detected
P0306 - Cylinder 6 misfire detected
P0307 - Cylinder 7 misfire detected
P0308 - Cylinder 8 misfire detected
P0313 - Misfire detected with low fuel

Jun 23, 2011 | 2004 Ford F150

1 Answer

Codes. 0307. O128. 0316. 1000. 2106.


P0307 = cylinder no.7 misfire detected.
P0316 = misfire detected during startup-first 1000 revolutions.
P0128 = coolant thermostat (coolant temperature below thermostat regulating temperature)
P1000 = On board diagnostic readiness test not complete.
P2106 = Throttle actuator control (TAC) system----forced limited power mode.

Check the spark plug, spark plug wire, coil, and fuel injector for cylinder 7. Check compression on cylinder 7. When the no. 7 misfire is solved, clear the codes.

Feb 26, 2011 | Ford E-150 Cars & Trucks

1 Answer

So I obviously got misfire out of a couple cylinders.P0300,P0304,P0307 are all misfire codes. P0358 is ignition coil H and P0352 is ignition coil B.... I want to start out with that...im going to change...


Spark plugs are not your problem

There are no letters on an LS cylinder
codes.

You won't likely have two bad COP Coils
and maybe not the #3 or#7

If not, you have to walk a new coil to find the
bad cylinder

Feb 08, 2011 | 2003 Lincoln LS

1 Answer

My engine light is on, codes show P0307 and P1740 the truck runs fine and the a/c blower goes from vent to defrost when I accelerate and back again when i let off the gas and cruise


A P0307 code means that the the car's computer has detected that one of the engines
cylinders is not firing properly. In this case it's cylinder #7.


Symptoms may include:
  • the engine may be harder to start
  • the engine may stumble / stumble, and/or hesitate
  • other symptoms may also be present
A code P0307 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
  • Poor compression
  • Defective computer

Jul 15, 2009 | 2001 Dodge Ram 1500 Truck 2WD

2 Answers

1996 f150 5.0L misfire code


P0307 Code - Cylinder #7 Misfire Technical Description Cylinder #7 Misfire Detected
What does that mean? A P0307 code means that the the car's computer has detected that one of the engine's cylinders is not firing properly. In this case it's cylinder #7.
copyscape.gif SymptomsSymptoms may include:
  • the engine may be harder to start
  • the engine may stumble / stumble, and/or hesitate
  • other symptoms may also be present
Causes A code P0307 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
Possible Solutions If there are no symptoms, the simplest thing to do is to reset the code and see if it comes back.
If there are symptoms such as the engine is stumbling or hesitating, check all wiring and connectors that lead to the cylinders (i.e. spark plugs). Depending on how long the ignition components have been in the car, it may be a good idea to replace them as part of your regular maintenance schedule. I would suggest spark plugs, spark plug wires, distributor cap, and rotor (if applicable). Otherwise, check the coils (a.k.a. coil packs). In some cases, the catalytic converter has gone bad. If you smell rotten eggs in the exhaust, your cat converter needs to be replaced. I've also heard in other cases the problems were faulty

Jan 14, 2009 | 1996 Ford F150 Regular Cab

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