Question about 1998 Ford Expedition

1 Answer

Misfire coil Po301 say miss fire we have change spark plugs and wires we check volts on ciol pack and it good. We are still get that code what to do.

Posted by on

  • JASON SCOTT May 08, 2014

    Have you fixed yet? If voltage to coil is good, uou have to check output to number 1 cylinder, using a spark tester, check for spark from #1 wire, if no spark inspect coil for cracks, most likely evident crack, but suspect coil. If you have spark, you will need to verify spark plug is good, highly recommended to use dealer spark plugs, if that is good, move forward with an engine compression test, but most likely coil is your issue or bad plug

×

Ad

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    Hot-Shot:

    An expert who has answered 20 questions.

    Corporal:

    An expert that hasĀ over 10 points.

    Mayor:

    An expert whose answer gotĀ voted for 2 times.

  • Expert
  • 94 Answers

Coil pack voltage may be good but coil may not be putting out voltage check with spark checker.also fuel injector may be bad if all good do compresson test on cyl

Posted on May 07, 2014

Ad

6 Suggested Answers

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
emissionwiz
  • 76691 Answers

SOURCE: 2001 ford taurus 3.0 v6 code p0306 misfire

Please go to this page for engine misfire causes.

Posted on Aug 08, 2012

chessmaster2
  • 160 Answers

SOURCE: miss firing

could be a wire crossed, or it's out of time. since you used motorcraft plugs, did you set them properly to the correct gap? replacing plugs without gapping them can cause the sluggishness, out of time can cause the mis-fires and rough running.

Posted on Nov 29, 2008

alicantecoli
  • 22219 Answers

SOURCE: coil pack

153624 is the firing order

Posted on Jun 21, 2009

  • 1 Answer

SOURCE: misfire

Check your cam. position sensor

Posted on Jul 25, 2009

  • 4 Answers

SOURCE: has two cylinders that are miss fireing i changed

check distributer cap
check rotory button under dist cap
change ALL wires
change ALL sparkplugs

Posted on Dec 23, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

2 Answers

Why won't my car start?


P0300 multiple misfire
P0302 misfire cylinder 2
P0306 misfire cylinder 6

Apr 25, 2015 | Cars & Trucks

3 Answers

I have a miss fire on cylinder 2and 3 I have changed coil pack ,spark plugs and wires still have the missing in it did not make a difference what else can I do


Is the computer code coming up as a misfire or are you actually feeling the misfire when you drive? Make sure all the grounds for the coil packs and engine are solid and clean. Many times there is rust corrosion under the pack or the retaining screws etc, Low compression can feel like a misfire as well. If all items are OK do a compression check to verify its not an issue.

Mar 03, 2015 | 1998 Toyota Sienna

2 Answers

I have a 1996 crown vic i need to know these trouble codes po301 po304


PO300 Codes-- are cylinder misfires

PO301 thru PO308

Last # is the cylinder

Could be bad ignition coil for a cylinder
or a coil pack for that side,depending what
engine you have

#1 &#4 are at the front & back of the passenger
side of your motor or firewall side if transverse

You will need to provide details of who worked on it
& exactly what was done besides replace a coil based
on a code

Codes aren't very good with COP Ignition but a complete
coil pack on one side should take care of some issue

Vacuum Leaks & other items can cause misfires & the codes
don't tell you to replace ignition parts as you may have

Feb 14, 2013 | 1996 Ford Crown Victoria

2 Answers

Engine miss firing installed new plugs still miss fires


You may get one bad spark plug in 50 years of driving

Does that answer your question?

You did not diagnose your problem, which
was a misfire.

Do you have codes PO301 thru PO306?

Ignition Coils cause misfires

Have to know the system your working on

Mar 18, 2011 | 2001 Mazda Tribute

3 Answers

My husband did a tune up on my car yesterday and now it wont start it will turn over like it wants to start but it wont he said that its miss firing we have bought 3 new coil packs and still will not start...


If your car is miss firing and your husband changed the coil packs,the wires leading from coil packs to sparkplugs must have got crossed.This will change car timing which will result in the car miss firing.He needs to go over wiring and correct problem for car to run right.You can go online to autozone.com and type in Info about car to get the correct wiring layout.Your problem isnt the new plugs n wires.Its the wiring layout.

Feb 09, 2011 | Pontiac Grand Am Cars & Trucks

3 Answers

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


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.

Jan 17, 2011 | 2002 Mercury Sable

1 Answer

MISFIRE ON CYLINDER 4 AND 6 WITH AN ENGINE LIGHT ON


Check the coil packs on the plug if equipped with that type, or the coil packs at the end of the spark plug wires, if so equipped.

Also, check that the fuel injectors are firing on all 8 cylinders.

Definitely, check out what other codes are stored in the computer besides a missing condition.

I have a 1999 Expedition that had a miss on a cylinder, and it turned out to be a bad coil pack. You have 2 cylinders missing, so I would check each cylinder for good spark, or replace the coil packs as necessary to see if that resolves the problem.

Good luck on this repair.

Dec 31, 2010 | 1997 Ford Expedition

2 Answers

Cyl. 3 miss fire code po303


my money would be on the coil cover, especially if it had been a long time since the last tune up. it is certainly worth trying, as this is part of a routine tune up anyways. good luck!

Mar 18, 2010 | 1999 Pontiac Sunfire

1 Answer

5vz-fe misfire codes


Replace the coil pack.

Dec 26, 2008 | 1999 Toyota 4Runner

Not finding what you are looking for?
1998 Ford Expedition Logo

84 people viewed this question

Ask a Question

Usually answered in minutes!

Top Ford Experts

yadayada
yadayada

Level 3 Expert

76691 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22219 Answers

fordexpert

Level 3 Expert

5537 Answers

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

Answer questions

Manuals & User Guides

Loading...