Question about 2003 Ford Taurus

1 Answer

My 2003 Ford Taurus LX has 47,000 miles, a 3.0 V - 6 cylinder OHV engine (engine code 2) and is not firing on cylinder No. 5 when idling. At speeds above idle, all cylinders appear to be firing OK, but the engine runs roughly when idling. I am getting normal mileage of 25 mpg on the Interstate at full speed. The amber ?Check Engine Soon? light is ON steadily, but if I am sitting at a red stop light for a minute or so, the ?check engine light? starts blinking and the engine really gets much rougher. When that happens, when I accelerate to go at higher speeds with the amber light blinking on and off, the engine becomes so much rougher that I need to stop the car, shut the ignition off and re-start it to get rid of the blinking amber light and resume to the steady amber ?check engine soon? light, when the only roughness in the engine is detectable only on idle, once again. The extreme roughness disappears after I follow this process. Auto Zone did a free diagnosis for me, and 2 codes were detected; 1.PO316 Definition ? Crank sensor condition Explanation ? the Crankshaft Position sensor signal is monitored for error Probable causes - 1) Crank sensor defective 2) Check connector and wiring to sensor 3) Check trigger wheel for damage 2.The second code detected by Auto Zone was P0305 Definition - Cylinder misfire detected ? Cylinder No. 5 Explanation ? the power train control module monitors the crankshaft speed and has detected a misfire condition. Probable causes ? 1) ignition system fault ? spark plug(s), ignition wires, coil 2) vacuum leak 3) injector fault 4) high or low fuel pressure So far, I have switched the following parts from my other Ford Taurus, a 2006 model; The camshaft position sensor, ignition wires, new spark plugs, ignition coil, new fuel injector for No. 5 cylinder. I have checked as best I was able for a vacuum leak by spraying water on the hoses and looking for bubbles and installed a new fuel filter as a makeshift measure of alleviating some possibility of high or low fuel pressure. I also switched the mass airflow module with my 2006 model. None of the above has had an effect. A compression test was done on all 6 cylinders. Number 5 cylinder measured in at the lower end of its acceptable range, but still acceptable. The other 5 cylinders came in at the upper end of their acceptable range. I do have another problem with the car which might or might not be related to the above problem, and that is the fuel gauge indicator (mechanical) is intermittent. It shows either 0 fuel or actual. I hope that you have run into this kind of problem before and will recognize it and will be able to advise me what to try next.

Posted by on

  • Anonymous Mar 14, 2014

    the powertrain control module monitors the crankshaft speed and has detectd a misfire condition. probable cause, ignition system fault spark plug, ignition wires, coil, vacumm leak, injector fault high or low fuel pressure

×

Ad

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 387 Answers

All system checked already, try that, direct the injector positive wire to 12v constant @ battery post, direct the ignition coil ground to engine mount, and make sure that the fuel pressure is not less than 30psi, check all the supply voltage for accurate 12.1-13.8 volts reading. if all this ok, try to replace another ecm, but you need to program this

Posted on Sep 13, 2010

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

2003 Ford Taurus with code P0316 only


Code 316 means the engine computer has detected a miss-fire on startup. You normally get a code for the cylinder causing the problem.
If the spark plugs are original, I would start with checking them for signs of damage or excessive wear.

Sep 07, 2015 | 2003 Ford Taurus

2 Answers

What is the spark plug firing order 2001 ford tauras


The firing order of a 2001 Ford Taurus with a 3.0L V6 OHV engine is 1, 4, 2, 5, 3, 6. Here is a Jpeg picture for you hope this helps.

527b9a4f-705c-4e05-8324-16b319175cac.jpg

Jun 05, 2014 | 2001 Ford Taurus

2 Answers

Firing order diagram ford taurus v6 3.06 6 cylinder engine, and which one is the number 1


FIRING ORDER IS 1 4 2 5 3 6. STANDING IN FRONT OF CAR ON PASSENGER SIDE FIRST CYLINDER FRONT IS 1 2 3 ON DRIVER SIDE FIRST CYLINDER FACING YOU ARE 4 5 6 SEE 1 CYLINDER FACING YOU ON PASSENGER SIDE.GET A PIECE OF PAPER WRITE NUMBER ON TOP ACROSS LARGE NUMBERS 3 2 1 AND BOTTOM OF PAPER WRITE NUMBERS 4 6 5 THATS COILS WIRES FIRING ORDER TO SPARK PLUGS.

Sep 26, 2010 | 2000 Ford Taurus

1 Answer

WHAT IS THE FIRING ORDER FOR A 1998 FORD EXPLORER


google "ford explorer firing order"

4.0L OHV Firing Order Firing order for the 4.0 liter OHV V6 is
  • 1-4-2-5-3-6
http://autorepair.about.com/od/enginefiringorders1/ 4.0L SOHV Firing Order Firing order for the 4.0 liter SOHV V6 is
  • 1-4-2-5-3-6
http://autorepair.about.com/od/enginefiringorders1/ 5.0L Firing Order Firing order for the 5.0 liter V8 is
  • 1-3-7-2-6-5-4-8
http://autorepair.about.com/od/enginefiringorders1/ How to Find the Cylinder Order V6 When standing in the front of the vehicle the cylinders are numbered 1-3 up the passenger's side and 4-6 up the driver's side. How to Find the Cylinder Order V8 When standing in the front of the vehicle the cylinders are numbered 1-4 up the passenger's side and 5-8 up the driver's side.

Jun 07, 2010 | 1998 Ford Explorer

1 Answer

I need a picture of the spark plugs on a 1998 ford taurus numbered


I don't have a link with pictures, but I will describe the cylinder and coil numbers for both the overhead valve (OHV) and the overhead cam (OHC) as best I can.
Facing the engine from the front bumper.
On the 3.0 overhead valve (OHV) the cylinder location looks like this:
1 2 3
4 5 6

The coil location looks like this:
5 1
6 2
4 3

If you have the 3.0 overhead camshaft (OHC) engine again facing the engine from the front bumper your cylinder location looks like this:

1 2 3
4 5 6

Your coil location looks like this:

4 6 5
3 2 1

I hope this was helpful.

Feb 15, 2010 | 1998 Ford Taurus

1 Answer

Misfire on the #2 spark plug


Firing order is 1-4-2-5-3-6 Cylinders are numbered as such: Standing in front of the car looking at the engine the cylinders farthest from you on the back side of the engine are from left to right, 1-2-3 and on the front side closest to you from left to right 4-5-6.

Sep 16, 2009 | 2003 Ford Taurus

1 Answer

Misfire on number 2 cyl


Cylinders are numbered from front to rear (grille to firewall) passenger side: 1-2-3, driver's side: 4-5-6. Firing order is 1-4-2-5-3-6
Did you check by pulling #2 out while the engine is in idle to see no weakness from the engine? BTW your coil pack cost $80.

Sep 13, 2009 | 1996 Nissan Maxima

1 Answer

Firing order


3.0L 2V is 1-4-2-5-3-6
3.0L 4V is 1-4-2-5-3-6

Jun 06, 2009 | 2001 Ford Taurus

2 Answers

What is the firing order for a 2006 ford tauras


Sir,
There are two firing order sequences for the FORD V-6. It depends on which engine you have. The first is 1-4-2-5-3-6. The second is 
1-4-2-3-5-6. The in-line six cylinder engines use: 1-5-3-6-2-4. You should look at the intake manifold to see which firing order your car uses. The firing order is normally stamped or embossed on the top of the intake manifold.


Link 1
Thanks Good Luck
Appreciate to rate as "Fixya"

Mar 07, 2009 | 2006 Ford Taurus

Not finding what you are looking for?
2003 Ford Taurus Logo

Related Topics:

213 people viewed this question

Ask a Question

Usually answered in minutes!

Top Ford Experts

yadayada
yadayada

Level 3 Expert

76109 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22156 Answers

fordexpert

Level 3 Expert

5520 Answers

Are you a Ford Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...