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My 2002 WRX automatic will not accelerate

Tiny
TREVORGLADFELTER
  • MEMBER
  • 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
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Sunday, April 15th, 2012 AT 9:25 PM

4 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 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
  • 16 POSTS
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
  • 16 POSTS
Just spray it off with carb cleaner and plug it in.
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Tuesday, May 1st, 2012 AT 4:58 AM
Tiny
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  • MEMBER
  • 16 POSTS
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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