2000 Pontiac Grand Prix

TONY LOVERN

MEMBER
2000 PONTIAC GRAND PRIX
6 CYL
2WD
AUTOMATIC
165,000 MILES

Car cuts out changed plugs slow speeds ok highway cuts out

Monday, January 26th, 2009 AT 12:20 AM

1 Reply

JDL

MECHANIC
16,098 POSTS

I'd check the troublecodes. Some of the national brand autostores will check codes for free. It might identify a cylinder? If it is a po300, then it's a problem common to all cylinders. Fuel--air--egr system? Any code might point you in the right direction.