2001 SATURN SL1 ENGINE KNOCK

  • Tiny
  • buckbuick
  • 2001 Saturn SL1

Noises problem
2001 Saturn SL1 4 cyl Front Wheel Drive Automatic 120000 miles

My daughter's 2001 saturn SL1 knocks when accelerating during warm weather, in the winter it doesn't. What could it be?

Sunday, April 12th, 2009 AT 10:32 PM

1 Answer

  • Tiny
  • rasmataz
  • Member

Check the EGR valve if its not opening exhaust gases will not recirculate and cause the engine to detonate/ping called spark knock-

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Sunday, April 12th, 2009 AT 10:37 PM

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