Question about 2003 Ford Expedition

2 Answers

My 2003 expedition is idleing and running rough

If i change the spark plugs on 2003 expedition should i also change the coil boots? What else is recommended?

Posted by on

  • EU_ZORRILLA Aug 10, 2009

    I have replaced the plugs and the idle air control valve. Now it is only rough when running, not on idle. Any suggestions as to what it might be?
    How can I test the coils to see if any are damaged? Where is the PCV Valve on this truck?
    Thanks for your help!

×

Ad

2 Answers

  • 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.

    President:

    An expert whose answer got voted for 500 times.

  • Master
  • 672 Answers

Its recommended to replace all coils at the same time you replace the plugs. I had the same problem @62000miles, changed the same part, including injectors at the ford dealer. It just got worst, I replaced all the coils and engine ran like new.

Posted on Aug 13, 2009

Ad
  • 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.

    President:

    An expert whose answer got voted for 500 times.

  • Master
  • 410 Answers

You don't need to go so far as changing the coil boots when you change the spark plugs. I would recommend changing the plugs but also I would clean or replace the idle air control valve. This valve is located on the throttle body and is normally held on by a couple screws. You can clean this with throttle body cleaner. Just make sure that it is completely dry before you put it back on. You can use compressed air to do this. Once you do this and change the plugs you should be good to go. Let me know if this doesn't fix your running rough problem. Please let me know if you have any further questions. Thanks for using FixYa!

Posted on Aug 10, 2009

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE:

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this 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.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

How do I change out coils in a 2003 ford expedition 5.4 V8?


Your truck has what is called coil in plug commonly known as CIPS. They are located on top of the spark plug boot. You have to take out small bolt that holds it onto the sparkplug. Then you can take out spark plugs. The CIPS are expensive (about 85-100 per cip). I ordered mine on the internet for about 10 bucks a piece and the were new. Be advised you may not need to replace all the CIPS. I only had to change 3 out of 8. Have autozone run a code check then you will know exactly which CIP or CIPS are bad. I would change all the plugs if you have over 60,000 miles on them. Additionally after you change the plugs your truck computer will have to "relearn" the firining order. The truck will run rough for about 3-4 restarts then it will run smooth. Getting the plugs changed took me 5 hours. Theres a lot of stuff in your way as you will see once you get started. The back 2 plugs on both sides are a real pain. Good luck !!

Feb 22, 2015 | 2003 Ford Expedition

1 Answer

What is causing 1998 4.6L expedition to hesitate on hills, rough idle


Are you sure the spark plug wires are on the correct spark plug? Recheck the firing order and spark plug wires. Additionally check timing on distrubutor

Jun 05, 2014 | 1998 Ford Expedition

1 Answer

How to change coils on 2003 expedition


please tell me in this tune up you had new spark plugs put in? if check engine light is on there are some stored codes those will give you the suspect cylinder(s) check to see if you have plug wires if not there will be a coil for each cyl. pass. side of motor starting in the front working to the back or firewall cyls are 1,2,3,4 driver side same front to back 5,6,7,8 codes will be PO301 cyl 1. PO302 cyl 2. etc. get the code find the correct cyl. unplug little connector u will need a 7mm socket to remove the bolt holding the coil in place then pull up on the coil and boot.... if u have plug wires get the code find correct cyl and follow plug wire to coil pack in front of engine there will be two one on each side in front of engine...

Apr 17, 2013 | 2003 Ford Expedition

2 Answers

98 expedition 5.4 4x4 with dual a/c..sputters and shakes while idle and driving...please help me ! i have replaced 5 of the 8 spark plugs till i can get to the back 3 (pain in the ****) no change not even...


When you know the symptom who needs codes?And if there was a code it probable say lean bank 02. why simple you have a misfire. the smell rich exhaust the shake and sputter in drive. 2 causes the Expedition suffer from ,An open EGR valve.If you can change a fuel filter and change a spark plug you can test this. when the engine is running and misfire at idle and the vehicle is warmed up and at operating temperature. Turn off engine. Go to the EGR is it hot to touch. because if it is it open and this the the culprit.Another misfrie is from COP (coil on plug.)When you change the spark plug where any of the spark boot torn or worn that spark can go through. Or even a faulty COP will do this .To find it you have the engine running and lift one COP out of the cylinder and listen for a engine drop if the engine RPM drop the COP is good if no change in engine the COP is bad. By the way 600rpm in drive is low

Feb 27, 2012 | 1998 Ford Expedition

1 Answer

I have a 2003 Expedition 5.4L Triton. Two days ago, with low gas (38 miles to empty), engine started running rough. Code read P0302, misfire cyl. 2. Since it had 113K miles, I figured its time to change...


Most likely the coils. Easiest way to check is swap them with another cylinder, start it, pull the plug wire connecter and if it doesn't change the engine the coil is bad. If it is the injector, then you can check it with an ohm meter. Touch the leads in the injector it should read 11 to 15 ohms. if you need help let me know.
Randy

Dec 02, 2010 | 2003 Ford Expedition

2 Answers

2004 envoy 4.2 6cyl. runs rough. had a new


take the breather off and take a 10 mm socket to take the coil off easy to get to then take a 5/8 plug socket to take out plugs easy to get to,

Jan 03, 2010 | 2003 GMC Envoy Xl

1 Answer

Rough Idle and missing at low rpms on 2003 Ford Ka


make sure you put the right plugs in the fault is most likely the coil pack follow the plug leads from the spark plugs and you will reach the coil pack about £60

Oct 28, 2009 | 2003 Ford Escort

1 Answer

My Expedition is idleing extremely rough. I just changed the spark plugs, fuel filter and air filter and no codes are coming up. It has 97000 miles and had maintained proper maintenance. Any ideas???


Was it doing this before you changed the plugs? This is coil over plugs correct? Double check you pugs and if it is coil over be sure to use die-eletric grease on the spark plug boots. Good Luck

Aug 04, 2009 | 2003 Ford Expedition

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

752 people viewed this question

Ask a Question

Usually answered in minutes!

Top Ford Experts

Marvin
Marvin

Level 3 Expert

84625 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22484 Answers

gerry bissi

Level 3 Expert

4387 Answers

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

Answer questions

Manuals & User Guides

Loading...