running rough

2008 PONTIAC GRAND PRIX
130,000 MILES • 3.8L • 6 CYL • 2WD • AUTOMATIC
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DEBBIE CLYBURNE WILLIAMS
  • MEMBER
  • 1 POST
very hard to start and when it starts it revs high and low, but will not idle.
May 16, 2017 at 12:03 PM
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HMAC300
  • ✓ASE Certified Mechanic
  • 48,601 POSTS
  • ASE Certified Mechanic
try cleaning throttle plate on both sides and IAC hole with choke cleaner then check for vacuum leaks like hoses broken etc. if check engine light on then have it scanned for codes and get back to us auto parts does for free.
May 16, 2017 at 12:14 PM
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