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I got a 2004Ford Freestar 3.9 it's Miss Burns change the plugs wires oxygen sensor still doing it no code

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Run a tank of the GOOD fuel through it and see if it improves.
I'm guessing gummy valves

Posted on Apr 17, 2017

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Posted on Jan 02, 2017

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Oxygen sensor 05 freestar


You need to find out which oxygen sensor needs to be replaced, your vehicle could have 2 or 3. They are located in the exhaust system either in the exhaust manifold or the exhaust pipe before the catylitic converter and one after the catalytic converter. http://www.rockauto.com/en/catalog/ford,2005,freestar,3.9l+v6,1430707,exhaust+&+emission,oxygen+(o2)+sensor,5132 Where is the o2 sensor on 2005 ford freestar 3 9

Feb 15, 2017 | 2005 Ford Freestar Wagon

1 Answer

I have a 2006 Freestar with a 3.9 Engine . When it is cold it has a miss when i step on it. But it gets better when it starts to warm up. Almost seems like a spark plug miss


Spark Plugs ---change at 70,000 miles
O2 Sensors--change at 100,000 miles (front 2 only)
Gas Filter--every 3 years/30,000 miles
Air Filter ---every 3 years/blow off once every year
MAF Sensor---Clean once a year or more often

Ignition Coils--- most definitely will go bad,at
least 1 a year. (Any Check Lights or Codes ? )

When cold, it isn't in closed-loop, and runs on
Long Term Fuel Trim--not on O2 Sensors ,until
warm

Let it warm up at least 4 minutes in cold weather,
go light on the gas for first 2 miles

Feb 22, 2011 | 2006 Ford Freestar

1 Answer

Idling #5 and #7 miss fire. holding it at 2000 rpms makes all 8 miss fire. its running really rich and the only code its showing is P0300 which is engine miss fire. have replaced plugs wires cap and...


When there is an engine misfire it could be gas or spark related. Or, the oxygen sensor may not be operating correctly, which controls fuel supply.

If there is a 'random misfire' then it could be an oxygen sensor causing the problem, as well, causing a rich mixture.

Good luck on this repair.

Jan 30, 2011 | GMC K1500 Cars & Trucks

2 Answers

Check engine light is on and it reads Misfire on #2 cylinder. Also oxygen sensor bank2 sensor 1 and Bank 1 sensor 3 behind the converter. Engine running rough.


the engine miss fire can cause the other codes to set. you need to repair the miss fire and clear all codes after the miss is repaired then see if the 02 sensor codes return. the miss fire is probably a bad spark plug wire a good tune-up should take care of it ........HAVE A GREAT DAY

Jan 27, 2011 | 1996 Oldsmobile Bravada

1 Answer

1998 chev 5.7l bad miss when driving at idle no miss code p0302 and code p1133 please help


Make sure plug & wire good on # 2 cylinder, something may be misfiring on that one. (that's code 302)
1133 is oxygen sensor, bank 1, sensor 1, should be drivers side, before catalytic converter, but double check at parts store to be sure.

Oct 06, 2009 | 1998 Chevrolet C2500

1 Answer

I have a 2001 windstar this showed a code miss fire #3 cyl changed plugs/wires then the guy who is doing the work told me it was the cat converters so he replaced them and it still has a miss fire and runs...


Along the line of cat converters, you should do a visual inspection of your oxygen sensors. they could be bad or causing it. They monitor your exhaust and then adjust the fuel mixture accordingly

Sep 29, 2009 | 2001 Ford Windstar

2 Answers

P0132 code along with P0300, P0301, P0302, etc.


check for intake manifold for vacuum leaks, use a can of spray carb cleaner and spray around the top of the engine, if you hit a leak the engine idle will change, P0302 is a miss in #2 cylinder (cylinder power output low, lean cylinder due to poss vacuum leak and other issues.). once again an O2 will not cuase a mis-fire.

Mar 17, 2009 | 1998 Dodge Ram 1500 4WD

1 Answer

Miss fire cylinder 1 & 6 on a 4 liter enginge


Did the engine light go on, and you got a miss-fire code? If so, 1st check spark plugs (which u did), then plug wires, if that's not it, the injectors would be next. Let me know how u make out
Curt

Mar 02, 2009 | 2000 Jeep Grand Cherokee

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