Why is the cooling fan always running when car gets warm on my 2003 hyundai elantra

SOURCE: oil change procedure on a 2005 Hyundai elantra

it is very easy to change the oil put the car on ramps secure the back end look for the drain plug underneath the engine make sure you have the right size wrench and when you remove the plug also check the gasket on the plug to make sure it is not cracked you will also need an oil filter wrench and my other suggestion to you is to go to autozone to see if they have a Haynes repair manual for your car and if they don't see if they can order you one in the mean time they can also print you off a diagram of how to change the oil in you car safely

SOURCE: Adjusting the low beam headlight

its all the same the headlight is a complete unit you adjust both/ look for screws behind the headlight one each side one is for horizontal annd the other is for vertical Please rate my response thank you very much

SOURCE: 2003 Hyundai Elantra.. Numerous problems with the alarm.....

Go to http://www.hmaservice.com/ and register (vehicle by VIN). Afterward, you'll have access to technical information (manuals, wiring diagrams, service bulletins, etc) about your vehicle.

SOURCE: 2003 Hyundai Elantra - diable alarm

YES!... with various system operating difference. Disconnecting the alarm does not disable it.. it only silences the alarm. You will still need the Keyless Entry System Remote to RESET the alarm to start the vehicle.

SOURCE: P0139 code for a 2003 hyundai elantra. What is this code?

Hi the code P0139 is Bank 1 sensor 2 lambda sensor fault ,possible wiring or sensor fault even if you replace the sensor you need to have the MIL lamp turned off by a Diagnostic machine,it is possible you have another fault such as poor Catalytic converter efficency giving the same fault code ,Would recomend you get the car checked and read the "live" data as the car see`s it to make an accurate diagnosis and cure