Question about 2003 Pontiac Grand Prix

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Car keeps running hot but the radiator isnt hot . when u touch the cap it is not hot.

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My car kept running hot and it wasn't the radiator.
It was the Serpentine Belt.

Posted on Aug 11, 2009

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Have your thermostat changed

Posted on Jul 14, 2009

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You may have air in the system. Further bleeding is nessasary.
Or you have a stuck thermostat. Hopefully this is your problem since its whats normal for your condition.
Worst case scenerio is you have a clogged radiator which possible could of been caused by the inner fan blades on the water pump falling apart.

Posted on Jul 14, 2009

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2001 Chevy Lumina. Got hot, pulled over. Reservoir was boiling over but radiator cap was cool to the touch. Let it cool off. Check water in radiator and reservoir, needed very little. Started driving and...


Sounds like your thermostat is sticking closed at times, not allowing coolant to circulate through the radiator for proper cooling. Replace thermostat.

Mar 01, 2013 | 2001 Chevrolet Lumina

Tip

Car Over Heating!! Simple Temporary FIX to get you home.


We ,, well most of us have had our cars over heat at times, and sometimes in places that we wish id didnt happen. I will detail a few tricks here to get you on your way or back home safely.

Why do cars over heat?

Simply because it gets too hot!!, There are several reasons for this ,
1.) radiator has no water
2.) radiator is leaking
3.) Thermostat isnt working
4.) Fan isnt working

If your radiator has no water then u have to shut the car off. Use cool water and pour over the radiator cover until it gets cool to your touch (NEVER OPEN A HOT RADIATOR, PRESSURE BUILDS WITH THE HOT WATER AND IT WILL EXPLODE OUT AND BURN YOU). when its cold enough for you to touch, use a damp cloth to open the radiator cap, keeping your face clear of it, Start your engine, and add water to the radiator. (Dont Add Water To a hot engine without starting it)

If your radiator is leaking then allow it to cool a bit and follow the above instructions to get it opened. Crack an egg (whole egg without shell) in the radiator before adding water. (keep engine running) the egg solidifies in the hole and plugs it enough to get you home. If you plan to repair the radiator, u must flush it out first to get rid of the egg and other contents before welding.

The thermostat!!
If this isnt working propperly the fan wont turn on, follow the instructions for the fan below.

Fan aint working
Look closely at the fan you will find you will see a tube of 2 / 3 wires connecting to its motor. it connects there via a clip. unclip it. there will be 2 wires sometimes 3 . One of them is a positive (blue,brown,red) and the other is a ground (black or black stripe) cut them , use extra wires and connect them to the positive and negative of your battery terminals. The ground can also be placed on the body of the vehicle.Remember to disconnect these wires when you get home or it will drain your battery.

There you have it. A few simple to help get you home safely in the event your vehicle overheats.

on Feb 24, 2010 | Toyota Land Cruiser Cars & Trucks

1 Answer

How Do I check the radiator to make sure it is getting coolant?


take of cap run the car till its hot should start to over flow. another method make sure both radiator hoses are warm or hot to the touch. Should be able to sence flow once the thermostat opens up.

Nov 27, 2012 | Cars & Trucks

1 Answer

Running hot


Remove thermostat and test it by dipping it in cold water ib an open pot. Heat the water on the stove while observing the thermostat. It shold opel just before the water boils. If it does check the radiator itself for clogging. Also fluch the engine water galleries.

Sep 27, 2012 | 2000 Chrysler Town & Country

1 Answer

Friends car(2001 pontiac grand prix) 3.8 v6.started running hot,so he replaced thermostat. didn't help. so replaced water pump. helped very little. heater hoses cold to touch and blows cold inside. worked...


yes, but it's designed to drive the air out as long as you open the cap and run it until it's hot, keeping the radiator full. Eventually the air will come out and heater hoses should get coolant.

Sep 24, 2010 | 2001 Pontiac Grand Prix

2 Answers

Cars losing coolant pressure not losing coolant running very hot!


you need to verify and fill the coolant in the radiator and reserve when the engine is cold,also check to make sure your cooling fans are kicking on when it is hot

Oct 30, 2009 | 1996 Ford Thunderbird LX

1 Answer

Top radiator hose is HOT, radiator is steaming


have u replaced the radiator and hoses? Thermostat could also be stuck open. Water pump could also be your issue. with motor cool and of remove radiator cap(cap may be bad as well) top-off fluid and start car check for fluid flow with flashlight. Water pumps typically leak from what is called a weep hole when the shaft seal fails. Yours will be located under the timing cover (drivers side) running of the timing belt.
Hit me up after u have check on these.

Aug 15, 2009 | 1992 Honda Accord

6 Answers

My 04 dodge 1500 keeps over heating when i turn the ac on or when im going up hills "why"


under maximium load your cooling system is struggling asuming you have an automatic transmission,it is cooled through the radiator,when running the ac your condenser is hot,right in front of the radiator,if your not leaking,and your anti-freeze looks bright green an clean ,and the fan or fans are working ,first change the thermostat,cheapest,remove the serpintine belt and inspect the water pump pulley,spin it by hand,try to tip it forward and backward,to see if it wobbles,it should spin smooth and quiet,if it has a chattering or growling feel,or the pulley wobbles change the pump,the only thing left is the radiator ,make sure that debri or something isnt stuck in front of it a small piece of paper is enough to restrict airflow,inspect the core is it turning green and the fins are falling out ,is the plastic shroud intact around it, lots of things could be going on ,the transmission could be low on fluid,and running hot,causing the excessive load on the radiator,disregaurd this if you have a manual.need more info to pinpoint further,hope this helps

Jul 11, 2009 | 2004 Dodge Ram 1500

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