Replace the Accelerator Position Sensor. Located on the firewall.
How do you change a headlight bulb on 1 2004 Hyundai XG 350?
I have a 2004 XG350L doing the same thing. Turns out it was a bad interior dimmer switch.
under the air box on the center of the bell housing
I had the same problem...the alternator went bad. Both the alternator and battery had to be replaced.
I found an Internet site which says how to program the keyless entry remote. But there is an error: this procedure is good for Elantra 2001 to 2003. Elantra 2004 must be programmed by the dealer. http://car.justanswer.com/hyundai/n1kw-program-remote-entry-hyundai-2004
The 2004 Hyundai Sonata has 16 valves.
The 2004 Hyundai Elantra has 16 valves.
The 2004 Hyundai Accent has 16 valves.
You cannot use the 2004 Hyundai Sonata body parts on a 2003 Hyundai Sonata.
Where is my drain ncock for my 2004 Hyundai Accent?
Where is the heater core located on a 2004 Hyundai eleantra
The 2004 Hyundai Sonata has a 5-speed manual.