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mndave0002, engineer
Category: Dodge
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Experience:  Design engineer and toolmaker mechanic previous ASE mech and ICARE body man
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2001 Dodge Dakota: V8..some direction on replacing the spark plugs

Customer Question

I have 2001 Dodge Dakota Quad Cab 4.7l V8 and would like some direction on replacing the spark plugs. A diagram showing the steps to take would be good along with any tips to make the job easier.
Submitted: 8 years ago.
Category: Dodge
Expert:  mndave0002 replied 8 years ago.

Hi, welcome to Just Answer

Here is the instructions you wanted

4.7L V-8 Engine: Each individual spark plug is

located under each ignition coil. Each individual igni-tion

coil must be removed to gain access to each spark

plug. Refer to Ignition Coil Removal/Installation.

(1) Except 4.7L Engine: Prior to removing spark

plug, spray compressed air around spark plug hole

and area around spark plug. This will help prevent

foreign material from entering combustion chamber.

(2) 4.7L V-8 Engine: Prior to removing spark plug,

spray compressed air around base of ignition coil at

cylinder head. This will help prevent foreign material

from entering combustion chamber.

(3) Remove spark plug from cylinder head using a

quality socket with a rubber or foam insert. If

equipped with a 4.7L V-8 engine, also check condition

of coil o-ring and replace as necessary.

(4) Except 4.7L: Always remove spark plug or igni-tion

coil cables by grasping at the cable boot (Fig.

37). Turn the cable boot 1/2 turn and pull straight

back in a steady motion. Never pull directly on the

cable. Internal damage to cable will result.

(5) Inspect spark plug condition. Refer to Spark

Plug Conditions.


The plugs may be cleaned using commercially

available spark plug cleaning equipment. After clean-ing,

file center electrode flat with a small point file or

jewelers file before adjusting gap.

CAUTION: Never use a motorized wire wheel brush

to clean spark plugs. Metallic deposits will remain

on spark plug insulator and will cause plug misfire.


CAUTION: The 4.7L V-8 engine is equipped with

copper core ground electrode spark plugs. They

must be replaced with the same type/number spark

plug as the original. If another spark plug is substi-tuted,

pre-ignition will result.

Special care should be taken when installing spark

plugs into the cylinder head spark plug wells. Be

sure the plugs do not drop into the plug wells as elec-trodes

can be damaged.

Always tighten spark plugs to the specified torque.

Over tightening can cause distortion resulting in a

change in the spark plug gap or a cracked porcelain


Except 4.7L Engine: When replacing the spark plug

and ignition coil cables, route the cables correctly and

secure them in the appropriate retainers. Failure to

route the cables properly can cause the radio to repro-duce

ignition noise. It could cause cross ignition of the

spark plugs or short circuit the cables to ground.

(1) Start the spark plug into the cylinder head by

hand to avoid cross threading.

(2) Except 4.7L Engine: Tighten spark plugs to

35-41 N·m (26-30 ft. lbs.) torque.

(3) Except 4.7L Engine: Install spark plug cables

over spark plugs.

(4) 4.7L V-8 Engine: Tighten spark plugs to 27

N·m (20 ft. lbs.) torque.

(5) 4.7L V-8 Engine: Before installing coil(s), check

condition of coil o-ring and replace as necessary. To aid

in coil installation, apply silicone to coil o-ring.

(6) 4.7L V-8 Engine: Install ignition coil(s). Refer

to Ignition Coil Removal/Installation.



Spark plug cables are sometimes referred to as sec-ondary

ignition wires.


The spark plug cables transfer electrical current

from the ignition coil(s) and/or distributor, to individ-ual

spark plugs at each cylinder. The resistive spark

plug cables are of nonmetallic construction. The

cables provide suppression of radio frequency emis-sions

from the ignition system.



Check the spark plug cable connections for good

contact at the coil(s), distributor cap towers, and

spark plugs. Terminals should be fully seated. The

insulators should be in good condition and should fit

tightly on the coil, distributor and spark plugs. Spark

plug cables with insulators that are cracked or torn

must be replaced.

Clean high voltage ignition cables with a cloth

moistened with a non-flammable solvent. Wipe the

cables dry. Check for brittle or cracked insulation.

On 3.9L V-6 and 5.2/5.9L V-8 engines, spark plug

cable heat shields are pressed into the cylinder head

to surround each spark plug cable boot and spark

plug (Fig. 36). These shields protect the spark plug

boots from damage (due to intense engine heat gen-erated

by the exhaust manifolds) and should not be

removed. After the spark plug cable has been

installed, the lip of the cable boot should have a

small air gap to the top of the heat shield (Fig. 36).


When testing secondary cables for damage with an

oscilloscope, follow the instructions of the equipment


If an oscilloscope is not available, spark plug cables

may be tested as follows:

CAUTION: Do not leave any one spark plug cable

disconnected for longer than necessary during test-ing.

This may cause possible heat damage to the

catalytic converter. Total test time must not exceed

ten minutes.

With the engine running, remove spark plug cable

from spark plug (one at a time) and hold next to a

good engine ground. If the cable and spark plug are

in good condition, the engine rpm should drop and

the engine will run poorly. If engine rpm does not

drop, the cable and/or spark plug may not be operat-ing

properly and should be replaced. Also check

engine cylinder compression.

With the engine not running, connect one end of a

test probe to a good ground. Start the engine and run

the other end of the test probe along the entire

length of all spark plug cables. If cables are cracked

or punctured, there will be a noticeable spark jump

from the damaged area to the test probe. The cable

running from the ignition coil to the distributor cap

can be checked in the same manner. Cracked, dam-aged

or faulty cables should be replaced with resis-tance

type cable. This can be identified by the words

ELECTRONIC SUPPRESSION printed on the cable


Use an ohmmeter to test for open circuits, exces-sive

resistance or loose terminals. If equipped,

remove the distributor cap from the distributor. Do

not remove cables from cap. Remove cable from

spark plug. Connect ohmmeter to spark plug termi-nal

end of cable and to corresponding electrode in

distributor cap. Resistance should be 250 to 1000

Ohms per inch of cable. If not, remove cable from dis-tributor

cap tower and connect ohmmeter to the ter-minal

ends of cable. If resistance is not within

specifications as found in the SPARK PLUG CABLE

RESISTANCE chart, replace the cable. Test all spark

plug cables in this manner.

The pictures will not add right now for some reason. Tonight later I will add them


hope this helps__________________

mndave0002 and other Dodge Specialists are ready to help you
Customer: replied 8 years ago.
The info I really need is detail on the Ignition Coil removal and installation for the 4.7 V8. I'm confident on the actual plug removal and replacment. Do you have diagrams or pictures for ignition coil removal and installation?
Expert:  mndave0002 replied 8 years ago.

sure hold on will post one to this box in like 6 minutes or less.

sorry that took so long kept looking and not finding it (2001 ram manual)



A single ignition coil is used. The coil is not oil

filled. The coil windings are embedded in an epoxy

compound. This provides heat and vibration resis-tance

that allows the coil to be mounted on the



The 4.7L V-8 engine uses 8 dedicated, and individ-ually

fired coil (Fig. 22) for each spark plug. Each

coil is mounted directly to the top of each spark plug

(Fig. 23).


The Powertrain Control Module (PCM) opens and

closes the ignition coil ground circuit for ignition coil


Battery voltage is supplied to the ignition coil pos-itive

terminal from the ASD relay. If the PCM does

not see a signal from the crankshaft and camshaft

sensors (indicating the ignition key is ON but the

engine is not running), it will shut down the ASD cir-cuit.

(1) Disconnect the ignition coil secondary cable

from ignition coil (Fig. 24).

(2) Disconnect engine harness connector from igni-tion


(3) Remove ignition coil mounting bolts (nuts may

also be used on back side of bracket).

(4) Remove coil.


Battery voltage is supplied to the 8 ignition coils

from the ASD relay. The Powertrain Control Module

(PCM) opens and closes each ignition coil ground cir-cuit

at a determined time for ignition coil operation.

Base ignition timing is not adjustable. By con-trolling

the coil ground circuit, the PCM is able to set

the base timing and adjust the ignition timing

advance. This is done to meet changing engine oper-ating


The ignition coil is not oil filled. The windings are

embedded in an epoxy compound. This provides heat

and vibration resistance that allows the ignition coil

to be mounted on the engine.

Because of coil design, spark plug cables (second-ary

cables) are not used.


Customer: replied 8 years ago.
Thanks. This coil info looks complete enough. I'll have a go at it.
Expert:  mndave0002 replied 8 years ago.
YW let me know if you need anything else sorry it took awhile. some because I kept looking at wrong vehicle info. and they were doing repairs on the sight.

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