2003 Hyundai XG350 Not acclerating

LADYV

MEMBER
2003 HYUNDAI XG350

Engine Performance problem
2003 Hyundai XG350 6 cyl Front Wheel Drive Automatic

I have a '03 Hyundai XG 350L and it is not accelerating. My husband put in a transmission and he even looked at the timing belt and it is not that but this car only goes about 35 mph. And that is it. We have asked everyone we know and really is tired of it and need some help.

1 Reply

RASMATAZ

MECHANIC
75,992 POSTS

Lack of acceleration, chugging, hesitating, bogging etc. Could be caused by one of the following below.

Inspect and test all the following listed below and get back with some results

Oxygen sensor.
Catalytic converter.
Fuel injectors dirty/sticking.
Mass airflow sensor/Airflow meter.
Throttle position sensor.
Manifold absolute pressure sensor.
EGR Valve
Fuel pressure regulator leaking or defective fuel pump.
False air leakage.
Fuel contamination.
Foul/defective spark plugs.
Open spark plug wires.
Ignition coil/Coil packs defective.
Incorrect ignition timing.
Cap and rotor.

Note:If it doesn't apply disregard.