I just put a engine in my car from the junk yard its a 2003 Chevy Cavalier its runs good and nice and quite

Tiny
MANNYM
  • 2003 CHEVROLET CAVALIER
  • 128,000 MILES

I just put a engine in my car from the junk yard its a 2003 chevy cavalier its runs good and nice and quite but after I drive it for like an hour it starts to act funny like if I sit at a light it feels like it wants to take off by its self and now my engine light came on I checked it with the OBD2 and I got codes PO170 and PO171 what does this mean and what can I do to fix it?

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Saturday, May 5th, 2012 AT 3:15 AM

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Tiny
ASEMASTER6371
  • EXPERT
  • 25,554 POSTS

It is a long term trim codes. You need a shop with a scan tool to monitor these readings.

Check for any vacuum leaks.

Roy

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Saturday, May 5th, 2012 AT 3:20 AM

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