Question about Jeep 2003 Liberty Sport 3.7 V6

1 Answer

2003 jeep liberty sport overheating and no heat is coming from heater

My husband was driving my 2003 Jeep Liberty Sport around 65 mph and noticed that the heater was not working, he then noticed that the temp was indicating that the engine was overheating. He reduced his speed to around 50 - 55 and the engine temp dropped to about center of the guage but the heater was still not working. He stopped and checked the fluid in the radiator and it was almost empty. He put a 50/50 mix of coolant and water in, started it back up and left the heater on. Again the engine temp started rising as he accelerated. He turned the heater off and kept the Jeep at about 50 mph and got it home, but the engine temp continue to creep to the hot side of the guage. I can discern no leaks in the hoses or radiator which leads me to believe that the thermostat is bad. Does this seem to be a logical conclusion?

Posted by on

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that got 5 achievements.


    An expert who has written 20 answers of more than 400 characters.


    An expert who has answered 20 questions.

  • Expert
  • 80 Answers

If it is just a fluid issue, the problem is that there is air in the system, and every time air gets to the water pump, it can't pump anything. You need to pull it up on a sharp incline (as close as you can find to 45 degrees, run it for a bit and then turn it around on the hill to force the air out of the system.
HOWEVER, I'd bet that it's the water pump. The water pumps used at that time had plastic impellers, and they disintegrate and little chunks get all through the coolant system. The dealership wanted almost $1,200 to replace it and I had to leave it for a week. I limped down the street to Firestone Auto Care and they did it for $450 in four hours. 50,000 miles later, no problems.

Posted on Mar 16, 2017

4 Suggested Answers

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya expert 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 repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017

  • 6982 Answers

SOURCE: 2003 3.7L Liberty Jeep overheated - no leaks in

thermostats are fairly reliable considering how cheap and simple they are.
They can and do sometimes fail (nothing is perfect). the cause is pretty much that they just stop working, usually because the internal movable part jams.
I believe a company called robertshaw makes what they claim is a "lifetime" thermostat...I doubt if it actually will last that long but may be a slightly better unit to use as a replacement.
I would use the opportunity to check the fan(s) to make sure they are working properly, that the radiator is not externally or internally obstructed and to replace your coolant.
if the overheat condition persists, check (or have checked) to make sure that there are no hydrocarbons in the radiator (indicates a cylinder head gasket leak) If your gasket has failed, it needs immediate service or it will cause serious secondary damage to the engine.

Posted on Apr 30, 2010

  • 14333 Answers

SOURCE: 2003 jeep liberty

You may have blown head gasket.

Posted on Oct 31, 2012

  • 1669 Answers

SOURCE: how do i know if my ignition switch in 2004 Jeep Rubicon is broken?

It is probably the starter motor wiring not making good contact (either the thick wire from the battery or the ground wire on the solenoid. Clean up the contact areas and try again! If you still don't get the solenoid to push the starter gear into position, the solenoid needs to be replaced ormaybe just lubricated with CRC or WD 40 spray!

Posted on Jan 01, 2013

Add Your Answer

Uploading: 0%


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



Related Questions:

1 Answer

Where is the position of radiator fan relay on jeep liberty 2006

no idea to be honest earlier jeeps had then at the front of the wing down below as i remember ?? newer one would i imagine be in the electrical box under the bonnet near the battery

Dec 02, 2016 | Jeep Cars & Trucks

1 Answer

Where is the bleeder screw for the heater located? Heater blowing warm air, I think I have an airlock.

Bleed screw, jeep liberty limited, 2002, 3.7 L, no heat - Fixya
Nov 10, 2012 - bleed screw, jeep liberty limited, 2002, 3.7 L, no heat - Jeep Cars & Trucks question. ... Open Question ... Feel radiator and heater hoses, should be very warm to touch,if hoses ... Where is the location of the slave cylinder in a Jeep Liberty2005 ... Bleeding air out of a 2003 jeep liberty sport with a 3.7 motor.

Jeep Liberty - YouTube

? 7:17
Jan 24, 2014 - Uploaded by 1A Auto Parts ... What no engine heater install 2007 3.8 j wrangler video ....When opening up the bleeder valve, do you just keep it crackedopen until you have no air bubbles ... already replacing the water pump at 138,000 on an '05 Liberty Limited 3.7L..

Nov 19, 2015 | Jeep 2003 Liberty LIMITED

1 Answer

Heater only blows hot air intermittently.

Jeep Liberty heater not blowing hot air Questions & Answers ... > ... > heater not blowing hot air > Cars & Trucks > Jeep
Jeep Liberty cars & trucks heater not blowing hot air questions and answers. Ask your Jeep heater ... My 2005 Jeep Liberty will not blow heat through ... properly.

jeep liberty 2002 heat problem/hvac box issue - YouTube

? 3:12
May 28, 2013 - Uploaded by Joffre richer-desroches
Joffre richer-desroches. ... How To Install Replace Engine Coolant Thermostat and Housing 3.7L 2002 ...

Nov 01, 2015 | 2005 Jeep Liberty Sport

1 Answer

2003 jeep liberty

You may have blown head gasket.

Oct 30, 2012 | Jeep 2003 Liberty Sport 3.7 V6

1 Answer

2003 jeep liberty overheating still. Hello, I own a 2003 jeep liberty 3.7l sport and its been having problems ever since i got it. At first i just had to replace the water pump then i had to replace the...

I had the same problem i change the bottom hose and the water pumps inside came loose replaced water pump....Also it has a bleeder by the top hose by battery get the air out.....

Jun 01, 2011 | 2003 Jeep Liberty

2 Answers

My wife has a 2003 Jeep Liberty Sport with 162,000 miles. While driving with the heater on, it smells like either oil or steering fluid burning. Took car to repair shop, everything checked out fine. Any...

I have a 2003 with 140,000 with the same problem and cannot find a solution. I have to idle the engine high to get the heat to blow hot air as well.

Jan 21, 2011 | 2003 Jeep Liberty

1 Answer

2003 Jeep Liberty sport, The airconditioning works sometimes

Have you had the freon level checked. It might be low.

Jun 05, 2010 | 2003 Jeep Liberty

1 Answer

My Jeep 2003 Sport, heater only works on #2 &

You heater only works on speeds #2 & 4 because the blower motor resistor pack is defective. Replace it.

Jan 02, 2010 | 2003 Jeep Liberty

2 Answers

Oil light comes on at idle, goes off when driving, oil level full

change oil pressure switch it' should be near the oil filter

Dec 25, 2009 | 2002 Jeep Liberty

Not finding what you are looking for?
Jeep 2003 Liberty Sport 3.7 V6 Logo

Related Topics:

68 people viewed this question

Ask a Question

Usually answered in minutes!

Top Jeep Audio Players & Recorders Experts

Thomas Perkins
Thomas Perkins

Level 3 Expert

14333 Answers

Tom Chichester

Level 3 Expert

34124 Answers

Duff Howell

Level 3 Expert

403 Answers

Are you a Jeep Audio Player and Recorder Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides