Huge win for car owners! All TSBs to be made public. The Center for Auto Safety just made the NHTSA (US Government) make public the full text of all TSBs from now on. They are the same organization that has petitioned the NHTSA & filed lawsuits to protect car owners over exploding gas tanks & other major safety issues. Whenever you drive in your car, you are safer thanks in part to a lot of work over the years by this small but very effective consumer advocacy group.

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definitely annoying
Typical Repair Cost:
No data
Average Mileage:
147,000 miles
Total Complaints:
1 complaints

Most Common Solutions:

  1. not sure (1 reports)
2003 Saturn L300 engine problems

engine problem

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2003 Saturn L300 Owner Comments

problem #1

Mar 162016

L300 3.0L V6

  • Automatic transmission
  • 147,000 miles


I have only had this car for a couple of months now, and the engine seems to be miss firing on any of the following cylinders. 2,4, and 6. i looked at the spark plugs and they all had the .040 gap. Some of the plugs might have been a little bit lose but i fixed that and its still miss firing. Now, where do i go from here? Should i change the spark coil and the spark plugs at the same time? or is there another reason why the car is miss firing. Im wasting way to much money on gas and i would like that to stop haha.

- , West Lafayette, IN, USA

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