2003 Jeep Liberty Logo

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Anonymous Posted on Sep 24, 2017

I have a 2003 jeep liberty with a flashing check engine light. I ran the codes and it is saying P 300,301,302,303,304,306. We have replaced all spark plugs and all six coil packs. We also had the codes reset and the light came back on. We did find a small leak in the radiator and the air conditioner is going out. Any advice for my laundry list of malfunctions?

  • WelderArc Sep 24, 2017

    Sometimes Ecu plays up due to Cold solders if all checks turn up ok Ecu could be the culprit especially if the ECU is mounted on the engine

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1 Answer

Bogdan Odwazny

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  • Jeep Master 6,171 Answers
  • Posted on Sep 24, 2017
Bogdan Odwazny
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Joined: Jan 20, 2013
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Bad wires use good one only eliminate more problems!!!

5 Related Answers

djblade311

DJ Blade

  • 17 Answers
  • Posted on May 30, 2008

SOURCE: 98 jeep wrangler 4.0 acceleration problem

There are various reasons that this could happen:

  1. Your throttle body needs completely cleaned and decarbed
  2. The Throttle Position Sensor, IAC might be dirty
  3. o2 sensors might need replacing.
How many miles does your vehicle have?

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Anonymous

  • 4669 Answers
  • Posted on Mar 06, 2009

SOURCE: 2003 3.7 Liberty check engine light for crank sensor

2003 3.7 Liberty check engine light for crank....what? sensor? You have scanned it?

gfischer21

George Fischer

  • 236 Answers
  • Posted on Jun 18, 2009

SOURCE: 03 Jeep Liberty - Evap system small leak

how about the filler neck. just had to replace mine and now its fine

nathan

  • 634 Answers
  • Posted on Jul 07, 2009

SOURCE: 2003 3.7 Jeep Liberty Limited Air conditioner

half can is low, possible cause is that fill port is clogged happens when u put sealer in sometimes, but it sounds like your system is under charged check pressure, if no reading port is clogged change port, low reading add freon,

Anonymous

  • 190 Answers
  • Posted on Aug 15, 2009

SOURCE: Jeep Liberty Air Conditioner not blowing out air

Check your fuse thats a new vehicle so you might want to let the dealer look at it if its not a fuse. It should still have dealer warranty

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0helpful
1answer

Luz marcada con el numero cinco?

2003 Jeep Liberty- Reading Engine / Diagnostic Codes ...

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Jeep Liberty Questions - Cylinder Misfire code - CarGurus

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0helpful
1answer

2002 Jeep Liberty engine swapped with a 2003 Liberty both are 3.7 liter. Engine swap was fine, engine ran, fluids were good but when I took for a test ride it died. No lights, no power, nothing. Does the...

It could be a change in software from 2002 to 2003. You might try to get. Hold of a 2003 black box as the code will most likely be different.
2helpful
1answer

Whats the oil capacity for a 2003 jeep liberty?

2003 JEEP LIBERTY 2.4L 4-cyl Engine Code [
Engine Oil Grade 1....API* SAE 5W-30 is preferred.
CAPACITIES:
Engine, with filter..........4.7 liters

2003 JEEP LIBERTY 3.7L 6-cyl Engine Code

Engine Oil Grade 1......API* SAE 5W-30 is preferred.

CAPACITIES:
Engine, with filter..........4.7 liters

Thank you for using fixya and good luck
0helpful
2answers

My dad's Liberty will start with no problem but then the engine light flashes 5 times and then will stall once it hits second gear-please tell me what the 5 flashes mean

I would take the vehicle to your local autozone and have the codes checked and that can tell you with a lot more accuracy what the issue is.
Thanks,
Lee
0helpful
2answers

2003 3.7 Liberty check engine light for crank sensor

2003 3.7 Liberty check engine light for crank....what? sensor? You have scanned it?
0helpful
1answer

2004 liberty

If your engine light came on, the engine module could have stored a code.
You need to have a scanner to check what code it is and that will point you toward the solution.
Possible causes could be (crank sensor, tps sensor or oxygen sensor).
Don't go replacing parts until you scan the vehicle for codes first.
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