Question about 2003 Jeep Liberty

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2003 jeep liberty spark plug gap - 2003 Jeep Liberty

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Refer to the Vehicle Emission Control Information label in the engine compartment.

Posted on Jun 01, 2014


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Posted on Jan 02, 2017

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SOURCE: How to change spark plugs on a 2003 jeep liberty?

The plugs are probably under the coil packs, You will see a series of wiring harnesses with 3 or 4 wires in each connector that plug into a square or rectangular piece that is usually bolted down to the center of the valve cover(s). You have to remove these and the plugs are under them. Be gentle with the harness conectors and take your time as the underhood temps tend to make them brittle

Posted on Sep 18, 2009

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SOURCE: 2006 jeep liberty 3.7 l spark plug gap

Found it! 0.042

Posted on Sep 04, 2012

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Jeep liberty 2003 spark gaps 2.4l

When you buy plugs the parts store should have this info.

Jul 12, 2016 | 2003 Jeep Liberty

1 Answer

How to do a spark plug change on a 2003 Jeep Liberty

how to move hands, ?
what tools
im i to guess this is your first spark plug pull even on a lawn-mower?

what engine do you have, 90% posts lack what engine it is on a engine question, and we are still guessing, and nuttn happens.
lets pull HV wires 1 by 1, and replace them using a spark plug socket wrench.
if the engine has COP coils, those come off, first, (do tell got cops)>?

do not mix up the spark wires or it will not run.
why not watch youtube of 10000 doing this on all engines. to get a fell of the ways and means.... simple huh?
only start a spark plug by hand , never use a wrench.
rule1. end.
do not over tighten them (rule 2)

2.4L engine, 4 cylinder??????
this is my guess.
ill look that up for you.
ok i looked, the 2.4L uses coil pack
so rule 1 applies, DO NOT MIX the HV wires on the COIL PACK>
remove the spark plug wire from ONE spark plug]
remove the spark plug (turns counter clock wise)
put in new plug (right part number and gap it to spec.
torque it to spec, and put back the wire.
move to next plug wire and repeat.

HV means those high voltage spark wires, that make you glow like a June bug if you get HIT. the 50,000 volt wires.

RE14MCC5 (Champion #) plugs
48 thou gap
but the hood sticker wins this ... not me.... read it.

the 3.7 has 6 cop coils , no signal coil pack.
my 3.8L has coil packs.
so as you can see , each engine is unique, by year and car.

May 06, 2015 | Jeep Cars & Trucks

1 Answer

How to change spark plugs on a 2003 Jeep Liberty

what engine,
the 2.4 L.???? why not say what engines there, must we guess?

well you unscrew them, 1 at time, put back gapped right to 48 thou.
and never mix up up coil pack wires.

why not watch 1000's do this on you tube first.
then ask questions on whats not so clear,.
do not use a wrench to start spark plugs use hands. only.
to not exceed the torque spec.

and righty tighty,lefty loosey.


May 06, 2015 | Jeep Cars & Trucks

1 Answer

Spark plug gap settings

The spark plug gap is posted on the tag right inside your hood. If not there, just ask the store where you got the plugs, they have the information on the screen when you order them and will write it down.
I think the gap is .42, but verify, or use Bosch platinums- they come preset!!!!

Jul 29, 2014 | 2006 Jeep Liberty Sport

1 Answer

How to check for spark

You can buy a spark tester at any auto parts store. It just plugs into plug wire and to a ground. Set the gap and attempt to start vehicle and check it out.

Jan 12, 2012 | 2002 Jeep Liberty

1 Answer

Is it worth it to use the E3 spark plugs on a jeep liberty 4.6L engine

No, they don't work as well as their marketing wants you to believe. That is why most chain auto parts stores don't carry them. Also, your Jeep Liberty has a 3.7L V6

Jul 10, 2010 | 2003 Jeep Liberty

1 Answer

Where is the spark plugs lcated on a 2003 Liberty Jeep?

In this section from the service manual 08i-Electrical-Systems-Ignition-Control you can find answers to your questions.

I hoep help you with this (remember rated this help). Have a nice day, good luck.

Sep 21, 2009 | 2003 Jeep Liberty

1 Answer

03 Jeep Liberty random misfire

try checking your ignition coils and also the power wires to them!!Hopefully this helps....

Jul 15, 2009 | 2003 Jeep Liberty

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