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2002 Dodge Intrepid low to mid RPM rough running

Tiny
RIGGERR1
  • MEMBER
  • 2002 DODGE INTREPID
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 25,000 MILES
Hi, My 2002 Dodge Intrepid has a 2.7 liter V6 with 250,000 miles on it. At low and mid range RPM it runs rough- stalls out sometimes, and engine light comes on and sometimes flashes. If I press accelerator to the floor the car just takes off and goes GREAT, but anything less than full throttle it just runs really rough. Dealer can't find a problem. Oxygen sensors are new, catalytic converters are new, compression on all cylinders is good, computer is new, 1 coil was replaced (each cylinder has it's own coil), and injectors are new. Engine code was checked and came back as catalyst insufficiency, and 02 sensors 1 and 2, but like I said they were replaced. Please help!
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Thursday, April 10th, 2008 AT 10:07 AM

4 Replies

Tiny
BMRFIXIT
  • MECHANIC
  • 19,053 POSTS
All this work was done and no one checked for codes
check engine light on and flashes
1st step is to check for codes
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Saturday, April 12th, 2008 AT 5:58 AM
Tiny
RIGGERR1
  • MEMBER
  • 3 POSTS
The codes were checked but as stated in post, it came up as 02 sensors 1 and 2, and catalyst insufficiency, or am I checking the wrong codes? Is there some other code or engine flash light to check?
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Saturday, April 12th, 2008 AT 7:24 PM
Tiny
BMRFIXIT
  • MECHANIC
  • 19,053 POSTS
Get the codes and I will run them down for you
auto zone will sacn it for free
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Saturday, April 12th, 2008 AT 7:46 PM
Tiny
RIGGERR1
  • MEMBER
  • 3 POSTS
Ok, I'll get that done on monday and post it. Thx.
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Saturday, April 12th, 2008 AT 8:21 PM

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