2001 Saturn SL1 Saturn engine performance problem

2001 SATURN SL1
38,500 MILES • 4 CYL • FWD • AUTOMATIC
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SHOTI
  • MEMBER
  • 1 POST
Our 2001 Saturn SL1 (38500 miles) has been having some idling and acceleration problems for a while now. I started noticing a very rough idle that would infrequently occur when at a stop or in park. This escalated into some engine 'sputtering' when accelerating. Service light began coming on and then off. I took it in and got it read, came back we needed new Camshift postition sensor, crankhaft postion sensor, and new plugs for good measure.

It ran fine for about a week then it was back to the same problems. I took it back in and now the diagnostics came back with random misfirings. Mechanics believed it was eletrical but couldn't be certain.

Things are progressively getting worse. At around 35-40 mph when accelerating, car wants to jump or sputter. Hard idle still frequent. There is definitely a problem when gas tank gets close to 1/4 tank-seems to be more frequent.
Jul 25, 2009 at 12:17 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
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JACOBANDNICKOLAS
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 110,190 POSTS
I would start by checking fuel pump pressure and for vacuum leaks. Here is the how to for checking fuel pressure:

https://www.2carpros.com/how_to/how_to_check_fuel_pressure.htm


LEt me know what you find.

Joe
Jul 25, 2009 at 10:38 PM
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