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algina sizemore Posted on Oct 15, 2013
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2003 Jeep Cherokee Laredo started overheating after replacing thermostat.

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scott rimmer

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  • Expert 162 Answers
  • Posted on Oct 15, 2013
scott rimmer
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This is s common fault after replacing thermostat, there is a system bleed screw located on radiator which will need bleeding? If you warm engine up"only warm not hot" then locate bleed screw and slacken off, not unscrew all the way? You will hear a hissing noise of the air in you system. Very similar to central heating radiator in a house! Once you have water coming through then tighten up bleed screw/bolt and give engine a bit of a run. Hope this helps

3 Related Answers

simidrm45844

  • 159 Answers
  • Posted on Dec 30, 2008

SOURCE: My 99 Jeep cherokee laredo keeps overheating

the reason it getting hot when stopped is the fan relay is out thus not turning the cooling fan on,this is a time consuming job,the relay is located on the passenger side tip of the frame behind the headlight,the grill,headlights,bumper,and tip of the front fender has to be loosened up to get to it.
The relay is about 70.00 or so,the engine cools down when you drive as you are forcing air through the radiator to cool it down,as for the heater issue probably caused by boiling the anti freeze out ,
To make sure the engine is ok do a compression check to verify the headgasket and heads are ok,as for smelling the sweet smell which is antifreeze probably due to overheating and pushing the fluid out of the cap or tank.

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Tom Shanks

  • 141 Answers
  • Posted on Oct 14, 2009

SOURCE: Starter on 92 jeep cherokee laredo is out

Put front end on jack stands. DO NOT WORK UNDER CAR WITH ONLY JACK HOLDING IT UP! Your life is worth more than a 20 buck pair of jack stands. Disconnect battery, negative (black) lead first, then positive (red) lead. From under car, locate starter motor. Carefully disconnect electrical cables from built-in solenoid and motor. Remove mounting bolts. Pay attention if lengths are different. Put'em back where they came from. Rock starter back and forth to break it loose. Reverse procedure for installing new starter. BTW - don't waste your money on a rebuilt unless you enjoy changing them every 12 to 18 months. Make sure you return the old starter for your core allowance refund.

Anonymous

  • 1851 Answers
  • Posted on Dec 26, 2009

SOURCE: my jeep grand cherokee started overheating at idle

try the water pump - first - make sure the radiator is really full - take the cap off cold and fill - if it looks full - start and run 8 minutes or so - then fill it up - look at ur fan belt - is it tight - tight is about how much pressure u use to make a firm hand shake with little movement - any movement over about an inch is loose - when the jeep warms up the belt can slip and not even make a noise - - new materials don't always squeal. - then be sure ur water pump is ok - they go slowing - the fins wear down - one more thing is the radiator - u don't say how many miles or what maintenance schedules you have or not so that's it for now

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Overheated. Why won't it start?

I'm not really familiar with JEEP mechanics but if you've replaced your water pump and it's still overheating with full water/coolant level, you should check the thermostat; when it fails, it's a common cause or overheating in all kind of cars

I'm attaching some links to Youtube tutorial about replacing thermostat in a Jeep but you can expand your Google search using terms
Youtube replace thermostat JEEP Liverty

https://www.youtube.com/watch?v=Y3NpLdG993U

Jeep 4 0L straight six thermostat replacement

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2010 Laredo transmission overheating and car won't start.

it needs service, big time.
did you scan it cranking with a scan tool?
did engine overheat at any time?
did it stall? at any time. (before no start)
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I purchased a used 2000 jeep grand cherokee laredo it is overheating eve after replacing waterpump as well as thermostat it does not sound like the electric fan is working

fan motor broken ,,or feel pipes from rad when jeep is running for a while,pipes must be hard ,if soft problem is with pipes broken split ,ect ect,
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How do you replace the fan motor in '03 jeep grand cherokee laredo? - the damn thing overheats when idle - changed the relay & coolant sensor... still overheating

When was the last coolant change?
Under 2 years or 24,000 miles.

Change the thermostat and gasket first.

Use a 195F with pop-let protection.

A stuck/failing thermostat is a common cause of over-heating problem.

======
To change the fan,the entire protector plastic has to come out.

Most likely you will break the push in locking pins.

Get few replacement push in locking pins before you start the job.


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Overheating issues for a 2001 grand jeep cherokke

If it was overheating at freeway speed then it is a clogged radiator. Another cause of overheating is a timing that is retarded. These can be caused by worn timing components etc, although a possiblity it is highly unlikely on your car.
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