hardly worth mentioning
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
90,000 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

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2003 Hyundai XG350 fuel system problems

fuel system problem

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2003 Hyundai XG350 Owner Comments

problem #1

Jun 052013

XG350 6-cyl

  • 90,000 miles


My vehicle has been having a hesitation problem for some time now. I have taken it to several mechanics and have not found the problem after spending several thousand dollars. I took it to the local dealer (brown Hyundai) in Laredo tx and they point to the catalytic converters (3) and the oxygen sensors. I have had a mechanic remove the catalytic converts and tell me there is nothing wrong with the converters. The vehicle exhaust system reaches over 500 degrees. I have measured it with a heat gun. While I do not know what the proper temperature should be I know over 500 degrees is way to high. While I went to pick up my Hyundai at the dealer he told me they had just had 2 other vehicles XG350's with the exact problem. If you go on line and read some of the codes they refer too "band 1 and bank 2 system too lean", this is a very common problem without an exact solution. I believe the code is P0174 and P0171. Both the mechanics I have hired and the dealer have checked the list of possible problems which include: Intake air leaks oxygen sensors ignition misfiring fuel injectors fuel pressure mass air flow sensor.

- Laredo, TX, USA

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