MY 2002 WRX AUTOMATIC WILL NOT ACCELERATE

  • Tiny
  • trevorgladfelter
  • 2002 Subaru WRX
  • 165,000 miles

Will not accelerate seems like it is hesitating as if its not getting fuel I had half a tank I did get codes po420 and po 171 but my cel is always on. It was so bad I had to leave it sit

Sunday, April 15th, 2012 AT 9:25 PM

4 Answers

  • Tiny
  • ASEMaster6371
  • Expert
  • 25,549 posts

Check the fuel pressure. If it is ok, you may have a clogged cat converter

Roy

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Sunday, April 15th, 2012 AT 9:28 PM
  • Tiny
  • Chopper
  • Member

Check mass air flow for dust on sensor wires. Especially if you are running a KnN filter or similar oiled filter. Subaru fuel pumps rarely go bad

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Tuesday, May 1st, 2012 AT 4:57 AM
  • Tiny
  • Chopper
  • Member

Just spray it off with carb cleaner and plug it in.

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Tuesday, May 1st, 2012 AT 4:58 AM
  • Tiny
  • Chopper
  • Member

Note also check for torn air boot or disconnected air tubes after mass air flow.

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Tuesday, May 1st, 2012 AT 5:01 AM

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