Question about 2003 Ford Expedition

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A bad coil needs replaced.

I have a bad coil on # 5, but how do I tell which is #5. What is the cylinder order?

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  • Preston1969 Aug 07, 2008

    I have the exact same problem but can't find anything to tell me the cylinder layout of the engine. Help Please???

  • Anonymous Mar 23, 2014

    bad ignition coil on the #six cylinder

  • Anonymous Mar 23, 2014

    bad coil pack

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A bad coil needs replaced. - e602a71.gifHere

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Diagram of coil pack firing order on 2006 kia sportage


Firing order is 1-2-3-4-5-6
Cylinders on the head with the coil pack are 2-4-6 so the other head is 1-3-5
Its difficult to tell by the diagram but the coil sequence may be 3-4-5-2-6-1
diagram courtesy of autozone.com



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Sep 03, 2015 | 2006 Kia Sportage 2.7

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How do i replace the wire harness connector that clips to coils on jeep liberty sport 6v 3.7l


It's pretty basic on this. Test your clip by plugging it into the coil first, and make sure that it is the correct one. If yes, you need to simply cut the old plug off and connect the wires to your new one (in the right order) with a simple but connector sold at any auto shop/parts store or electrical shop.

Jan 08, 2014 | Jeep Liberty Cars & Trucks

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What is the coil pack order on 1997 lexus es300.Code scanner says coil pack number 5 is bad,im thinking the back coils and the one in the middle would be #5,is this correct?


1-3-5 are the cylinders on the backside of the engine. 2-4-6 are the cylinders on the front side of the engine. Cylinder number 5 will be the one on the drivers side on the rear of engine.

Sep 08, 2013 | Lexus ES 300 Cars & Trucks

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What do I need done if codes p0171 p0174 p0301 p0305 p0316 is it major problems


OK, We'll cover the Diagnostic Test Codes (DTCs), starting with the standard definition set by SAE J2012 (Revised December 2007)
DTC P0171 "System Too Lean Bank 1"
DTC P0174 "System Too Lean Bank 2"
DTC P0301 "Cylinder 1 Misfire Detected"
DTC P0305 "Cylinder 5 Misfire Detected"
DTC P0316 "Engine Misfire Detected on Startup (First 1000 Revolutions)"

The "system lean" codes are pretty much telling you that there is way too much oxygen in the exhaust. There is too much oxygen on BOTH sides of the engine, and that is why you are getting codes for bank 1 and for bank 2. Bank 1 is the side where #1 cykinder is located and Bank 2 is the opposite side.

The misfire codes are pretty self-explanatory. #1 and # 5 cylinders are misfiring. The P0316 DTC is telling you that the misfire monitor is detecting a misfire as soon as the engine starts. This tells you that it is a very severe misfire and that the engine does not have to warm up and the car does not have to be driven to detect the misfire.

A misfire can be caused by many things it can be vacuum leaks, bad spark plugs, bad ignition cables, faulty ignition coils, fouled or malfunctioning injectors or injector circuits, blown head gasket, cracked cylinder head, burnt valves, etc.. etc..

However, look at the codes you have. Then look at the firing order for your engine. 2002 Mercury Sable is only equipped with a 3.0L 2V 6-cylinder engine.
The firing order is 1-4-2-5-3-6

Now if you take the firing order and split it in half, stack the two halves on top of each other, it looks like this:
1-4-2
5-3-6

When you look at the firing order this way, you can see that cylinders 1 an 5, 4 and 3, and 2 and 6, are "PAIRED" cylinders. They are exacly opposite in the firing order. Now, the cylinder only fires every second revolution of the crankshaft. With paired cylinders, one of the cylinders in the pair will fire on the first revolution and the other cylinder will fire on the second revolution.

Looking back at your codes, please note that the cylinders that are setting the misfire codes are paired cylinders.

Now the coil pack for your ignition is actually made up of three coils. Each coil fires a set of paired cylinders. If you look at the top of the coil, it will usually be marked with the cylinder numbers that each coil tower is supposed to connect to. The coil will look just like the firing order split and stacked as above.

With all of this said, I would say that it is VERY LIKELY that your misfire codes are being caused by a defective ignition coil.

The lean codes are a little different.

These are USUALLY caused by vacuum leaks which allow too much air into the engine that is not getting measured by the Mass Airflow (MAF) sensor and causes the engine to be getting too much air and not enough fuel (running lean).

I would take a good look at all of the vacuum hoses and lines. Ford is notorious for getting holes in the rubber parts that connect the PCV tubes.

If you do not find any obvious reasons for a vacuum leak, then you may want to fix the misfire codes, reset the computer memory, and drive the vehicle to see if the lean codes come back again. The misfires COULD be the cause of the lean codes. In a perfect world, this is not supposed to happen because the misfire monitors setting codes will not allow the oxygen sensor monitors to run and set lean codes. However, I HAVE seen cylinder misfires that have caused lean codes.

I hope this helps you to figure it out. Good luck!

Feb 03, 2012 | 2002 Mercury Sable

1 Answer

I need the firing order of 06 ford f150 xlt reg cab 4x4 v8(5.4l) its say on my scanner misfire number 6 cylinder


Cylinders 1-2-3-4 are on the passenger side. 5-6-7-8 are on the drivers side.

Check the spark output on the number 6 coil by removing it, installing a spark tester, and start the vehicle. If there is no spark swap the coil with the #5 coil. If it still doesn't spark replace the coil. Very common for them to go bad.

Feb 10, 2011 | Ford F-150 Cars & Trucks

2 Answers

2000 ford mustang code 453 and missfire cyl 5 where is the cyl


a haynes manual from a parts place will show you--or chec the condition of each plug wire-if one looks bad or falls apart--probly need to get all new wires /plugs

Dec 18, 2010 | 2000 Ford Mustang

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Ignition coil d primary/secondary circuit malfunction for a lincoln ls 2002


This is a common problem with these cars, if you have the computer scanned and get the codes you will be able to pin point which coil is bad, thats what this codes means, you should have a coil for each cylinder the code should tell you which cylinder the coil is bad in then check that the coil connection is good if it is then replace that coil, heres a diagram to help you. the cylinders are labeled, so if it says cylinder 5 you use the diagram to find cylinder 5, hope this helps.5e9a019.jpg

Sep 04, 2010 | Lincoln LS Cars & Trucks

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Need firing order and, I need to know what side the number one piston is on?


To avoid confusion, remove and tag the spark plug wires one at a time, for replacement.

The 3.5L (VIN H) engine's unique ignition system has the ignition coils directly over each plug. No spark plug wires are used.
If a coil is replaced on any of the 3.1L, 3.4L or 3.8L engines, it may not be numbered, as is the factory coil. For this reason it is imperative that you label all wires before disconnecting any of them. Also, before removal, compare the current wiring with the accompanying illustrations. If the current wiring does not match, make notes in your guide to reflect how your engine is wired.

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Fig. 3.1L (VIN M) engine Firing order: 1-2-3-4-5-6 Distributorless Ignition System

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Fig. 3.4L (VIN X) engine Firing order: 1-2-3-4-5-6 Distributorless Ignition System

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Fig. 3.4L (VIN E) engine Firing order: 1-2-3-4-5-6 Distributorless Ignition System

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Fig. 3.5L (VIN H) engine Firing order: 1-2-3-4-5-6 Distributorless Ignition System

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Fig. 3.8L (VIN 1) engine Firing order: 1-6-5-4-3-2 Distributorless Ignition System

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Fig. 3.8L (VIN K) engine Firing order: 1-6-5-4-3-2 Distributorless Ignition System

The firing order for the 3.1L VIN M, 3.4L VIN E, 3.4L VIN X and 3.5L VIN H engines is 1-2-3-4-5-6. The right bank cylinders are on the cowl side (rear) of the engine compartment and are numbered 1,3,5, left bank cylinders on the front side of the vehicle, are numbered 2,4,6.
The firing order for the 3.8L VIN K and 3.8L VIN 1 engines is 1-6-5-4-3-2. Starting at the front of the engine, cylinders in the left bank are numbered 1,3,5 and cylinders in the right bank are numbered 2,4,6

Hope helped (remember rated this help) Good luck.


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1 Answer

Picture of 03 impala 3400 firing order?


The side of the engine closest to the radiator is the even number cylinders, 2-4-6. The side next to the firewall is1-3-5.

Looking at the coils from the front of the engine the one on the left is 5-2, center 3-6, right side 4-1. If the coils haven't been replaced the cylinder numbers will be on the top of the coil. The plug wires will also have the cylinder numbers on them if they have not been replaced

firing order 1-2-3-4-5-6

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Fireing order for a 1987 oldsmobile delta 88


2 different 3.8's for that. Will send other picture as well, you pick what you have.c50fb60.jpg

Jul 02, 2009 | 1988 Oldsmobile Delta 88

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