Question about 1998 Ford Expedition

2 Answers

Misfire coil Po301 keep pop up but we try everything and we don't know what to do

Posted by on

Ad

2 Answers

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Sergeant:

    An expert that has over 500 points.

  • Expert
  • 264 Answers

Hi I'm Peter, I'm not sure what we 've tried everything means. You have a code so I have to assume you have a code reader. Depending on which engine you have in your expedition you will either have one or two coil packs. It is a simple procedure to test the coil packs and there is a good video on You tube http://www.youtube.com/watch?v=c1zhgsnyZWw you will of course have to unplug the wires to test the coil pack/s MAKE SURE TO MARK which wire goes where. The packs are held down by 4 little bolts, you will need a ratchet with an extension and a 7mm socket to fit the bolts. Hope this helps and is what you needed.

Posted on Apr 16, 2014

Ad
  • Level 1:

    An expert who has achieved level 1.

    New Friend:

    An expert that has 1 follower.

    Corporal:

    An expert that has over 10 points.

    Mayor:

    An expert whose answer got voted for 2 times.

  • Contributor
  • 14 Answers

Basically that P301 is a misfire on cylinder #1. That could be a number of things. First and easiest would be a bad plug wire or plug. Next a bad rotor on the distributor or cap. Check those before going on to the Mass air flow sensor, and erg. It could be more technical like a crank shaft issue or timing chain. A good garage can diagnose those but pull the plug and see if it is fouled up and replace it. Cylinder#1 should be in the manual or on the label in the engine compartment.

Posted on Apr 16, 2014

Ad

3 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 Mechanic 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 repair professionals here in the US.
click here to Talk to a Mechanic (only for users in the US for now) and get all the help you need.
Goodluck!

Posted on Jan 02, 2017

  • 1 Answer

SOURCE: misfire

Check your cam. position sensor

Posted on Jul 25, 2009

GARYca
  • 672 Answers

SOURCE: I have a 2000 model

P0174/0171 are bank 1-2 running lean (insufficient fuel) which is related to the misfire codes. When there is a misfire detected, the computer shuts fuel to those cylinders triggering "too lean" codes. These vehicles are known for ignition coil failures. I'd recommend you replace all ignition coils (qty of 8) as they do have a short life span. Replace with another brand (not motorcraft/Ford), such as MSD/Accell/BOSH etc. hopefully this helpd!!

Posted on Oct 06, 2010

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

Ford freestar 2006, cylinder 6 code po301 cylinder 1 misfire


Standing on the passenger side.looking at the engine. Number 1 is the first cylinder on your left. Follow the wire to the coil. unplug it at the coil, lay the end of the plug close to the tip of the cap and start the engine. If there isn't multiple sparks, replace the coil. If there is , replace the plug and or wire. If you still have a misfire after that, do a compression test on number 1 cylinder.

Jul 07, 2015 | 2006 Ford Freestar

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

1 Answer

Keeps misfireing went to grage and the code comes up as 201 but they dont know what that means can you help


First I would leave any repair shop that obviously
has very little knowledge of OBD Vehicle Systems,
that have been around over 30 years

If you got a misfire you would have a PO301 for cylinder #1
You gave us a PO201, that appears to be a Fuel Injector
issue on cylinder # 1
Injectors don't fail often,so don't get taken down the wrong
path there

Find a shop that can actually diagnose a vehicle

Aug 01, 2011 | 2004 Renault 181

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

1 Answer

CEL light flashing-shuddering when idle. 03 passat 1.8 Turbo. Thinking its an air leak somewhere? Can hear air but can't figure out where its coming from...


A flashing cel indicates misfiring. A common problem is a bad ignition coil. The easiest route for diagnosis is the check the trouble codes(autozone and some other parts stores will scan for free, or an OBDII code reader is not too expensive to buy). The code should tell you which cylinder is misfiring(PO301 means cyl #1, 302 cyl #2, etc). Once you know which it is, swap the ignition coils around. If you have a #1 misfire, swap coils 1 and 4, clear the codes, then check it again. If the misfire moves, you know you've got a bad coil. If the misfire is air or fuel related, as with an intake leak, other codes should come up as well as the misfire.

Feb 08, 2011 | 2003 Volkswagen Passat

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

I have a 2000 model expedition and the codes po174 and po171 are popping up, along with po301 and po306 showing misfire. How can I fix that?


P0174/0171 are bank 1-2 running lean (insufficient fuel) which is related to the misfire codes. When there is a misfire detected, the computer shuts fuel to those cylinders triggering "too lean" codes. These vehicles are known for ignition coil failures. I'd recommend you replace all ignition coils (qty of 8) as they do have a short life span. Replace with another brand (not motorcraft/Ford), such as MSD/Accell/BOSH etc. hopefully this helpd!!

Oct 06, 2010 | 1998 Ford Expedition

2 Answers

Engine misfire


It sounds like the coil is going out on that cylinder,but replace the boot with the coil.It would not hurt to use a injector cleaner first,Lucas is the best.

Jan 25, 2010 | 2004 Mazda 6

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

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

72 people viewed this question

Ask a Question

Usually answered in minutes!

Top Ford Experts

yadayada
yadayada

Level 3 Expert

77186 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22265 Answers

fordexpert

Level 3 Expert

5575 Answers

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

Answer questions

Manuals & User Guides

Loading...