Wont accelerate or idle!

Tiny
PYREX
  • MEMBER
  • 2001 SATURN L100
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 86,000 MILES
2001 Saturn L100 Sedan
4 cyl Automatic Front Wheel Drive
2001 Saturn L100 Question

Real sluggish to start, then builds up speed, but then at stop light I tried to accelerate, and it started to die but then caught acceleration but found that my car wouldn't go faster, yet the rpm needle was at 4. Error codes were read at 300 and 420 but dont know what those are. What could be wrong?
The car is a 2001 Saturn sedan.
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Sunday, July 31st, 2011 AT 9:13 PM

4 Replies

Tiny
RASMATAZ
  • MEMBER
Random misfires and catalyst problem-Have the exhaust system check for restriction-catalytic converter could be clogging up-start here
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Sunday, July 31st, 2011 AT 9:24 PM
Tiny
PYREX
  • MEMBER
Already replaced the catalytic converter, checked clogs, and inspected fuel injectors, both are good.
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Sunday, July 31st, 2011 AT 9:31 PM
Tiny
RASMATAZ
  • MEMBER
Check and test the oxygen, coolant temperature sensor and engine compression check-P0300 is normally caused by vacuum leaks and contaminated fuel-
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Sunday, July 31st, 2011 AT 9:39 PM
Tiny
PYREX
  • MEMBER
Trying it now. You genius! What can my super hero tell me about po420?
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Sunday, July 31st, 2011 AT 10:47 PM

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