Question about 2002 Mercury Sable

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CODES-PO301-PO303-PO316- CHANGED PLUGS & WIRES. STILL MISS ON START UP, GOES AWAY MOST OF THE TIME ABOVE 1000 R.P.M

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Larson's Mobile Automotive Repair

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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.

Posted on Jan 17, 2011

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Jonah Oneal

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CODE PO301 CYLINDER 1 MISFIRE DETECTED / CODE PO303 CYLINDER 3 MISFIRE DETECTED / CODE PO316 MISFIRE DETECTED DURING START UP FIRST 1000 REVOLUTION.CHANGE FUEL FILTER AND CLEAN FUEL INJECTORS SEE WHAT HAPPENS MISFIRE COULD BE LEAN FUEL MIXTURE DUE TO STOPPED UP FUEL FILTER RESTRICTING FUEL FLOW.

Posted on Jan 17, 2011

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John Tryon

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I have a F250 super duty with a 5.4 engine. My engine lite sensor keeps comming on. The codes are, po300- po301- po316. I haul horses. The problem started after I had the spark plugs changed.

Posted on May 05, 2013

  • Jonah Oneal May 07, 2013

    sound like could have wrong type spark plugs and wires.if you reuse old spark plug wires they could be worn faulty.or could have wrong plug gaps.

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1 Answer

Po302 po303 po316 code


The Codes 302 & 303 are cylinder misfire codes,google them

Spark Plugs have nothing to do with misfires,it would be rare in
a life time if one ever failed to fire

Forget the 316 just misfires on start up

A repair shop would be your best choice without knowledge,
reference material & test equip

Ignition coil or vacuum leak problem

Feb 05, 2013 | 2002 Mercury Sable

1 Answer

Po316, po 300, po301, po305 2004 ford freestar


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)).

Oct 14, 2012 | 2004 Ford Freestar

1 Answer

2004 ford escape with codes po316 and po 305


PO305 Miss nr 5 cyl. PO316 Miss in first 1000 revelutions after start. Check Nr 5 cylinder plug, plug lead or coil over plug or nr 5 coil. Not sure what system that has. I suggest replace plug regardless but look at plug for track marks down side of plug & worn electrode etc... if all ok there check nr 5 injector.

Jul 14, 2012 | 2004 Ford Escape

3 Answers

Hello my mustang is sputtering badly, idles at between 900 and 1000 rpm. has a bad exhaust smell and acts like it wants to stall alot. the oem codes it gave were po303 and po316. what does this mean and...


303= cylinder #3 misfire the 316 is just another code for misfire detected during start up:
I would say buy a new plugs and wires, this will correct the problem, Tim

  • 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

Apr 25, 2011 | 2002 Ford Mustang

1 Answer

I changed sparkplugs, and wires1yr ago,aprox.8000 mi. now i'm having a miss, it then showed a code po303 and po316 so i changed fuel filter ,pulled out the irridium sparkplugs i put last and put in new...


You either have a bad ignition module or a
vacuum leak,intake manifold,PCV Hose,etc
that effects cyl #3

Ohm Checking is for the 1980's

Todays tool is an oscilloscope, you won't
have at home.

Also Smoke the intake and EVAP System
for leaks (EVAP Smoke Machine)

Mar 26, 2011 | Ford Taurus Cars & Trucks

2 Answers

Does anyone know what the code po316 is on the ford escape v6? there is also po300b,po303,po304b,po357and po353 codes


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

Feb 07, 2010 | 2005 Ford Escape

1 Answer

TROUBLE CODES PO301 & PO306 HAVE ALREADY


P0301 = Cyl no 1
P0306 = Cyl no 6

If you have changed plugs and leads and confident that they are now ok you need to run a compression check on all the cylinders, I'd emagine they should all be running at approximately 150psi per bore, if 1 & 6 are down it could be the head gasket, timing or piston rings.

Nov 25, 2009 | 2003 Ford Taurus

4 Answers

HI I HAVE A 2001 MAZDA TRIBUTE AND THE CODES PO301 AND PO303 CAME UP IN THE DIAGNOSTIC REPORT. THE CAR TURNS OFF WHEN I WARM IT UP IN THE MORNING IN THE COLD AND AFTER THAT ITS FINE I ALREADY CHANGED THE...


cylinder 1 misfire and low compression. Plugs and wires changed plus new fuel injectors. The engines still misses and no one can find the cause. When put on the computer it read misfire cylinder 1.

Dec 31, 2008 | 2004 Mazda Tribute

1 Answer

Engine runs rough in gear.


Okay disconnect battery for 3 min to reset engine light to turn off! change wire #2 to #3, Swap them then start it. if misfire happens again if your fault codes goes from po302 to po303 then your ignition wires should be changed!!! if it is the same the that side of coil might be at your point of interest to change but I think spark wires might do it!!!! spark plugs should be the same time!!!! I think this will help??

Sep 28, 2008 | 2000 Saturn Ls 4dr Sedan

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