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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NHTSA — Engine Problems


hardly worth mentioning
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
139,000 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.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2003 Pontiac Sunfire engine problems

engine problem

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2003 Pontiac Sunfire Owner Comments

problem #2

Jul 032014


  • 180,000 miles


Every time I let my car sit for 2 hours or more, I start it up and the belt on the tensioner squeak for 15 seconds. Also the battery light comes on and the rim fluctuate between 1,000 and 2,000. When I drive it the battery light will continue to stay on but every time the air bag light turns on and I'm accelerating the engine will not shift, the rpms will rev up to red line if pushed that far, eventually the light for airbag and battery will shut off and it will shift. Sometimes when I hit the gas pedal while this is doing this at night, my dashboard as well as radio lights will shut off until rpms go down to 2,000.

- Ann Arbor, MI, USA

problem #1

Aug 012010


  • 98,000 miles
The contact owns a 2003 Pontiac Sunfire. While driving at an unknown speed, the contact heard a rattling noise from the engine compartment. The vehicle was taken to an independent mechanic who stated that the timing chain separated and caused the tensioner and valve to fail. The timing chain valve and tensioner were replaced, but the failure recurred. The vehicle was not repaired. The failure mileage was 98,000.

- Mansfield , OH, USA

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