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I have a 2005 Impala as well.....I bought a code scanner when my check engine light came on....2 codes came up on the scanner...P0420 and P0420PD.....'catalyst below efficiency'....My car has 115,000 miles on it and it was time for annual safety/emissions inspection so I took it in to a shop.....The catalytic converter had gone bad and had to be replaced.....which was the reason for the P0420 code....
What else can I help you with?
What size engine does the 2005 Chevrolet Impala have?
The 2005 Chevrolet Impala has a V6 engine.
You have 2005 Impala and your temp gauge is not reading correctly but your engine is not overheating What is wrong?
Replace sending unit
What is the base engine size of the 2005 Chevrolet Impala?
The 2005 Chevrolet Impala has a 3.4 L base engine size.
What are the signs of a bad catalytic converter 2005 Chrysler pacifica?
Usual first sign is a check engine light with a code P0420.Usual first sign is a check engine light with a code P0420.
How many horsepower does the engine in the 2005 Chevrolet Impala have?
The 2005 Chevrolet Impala's engine produces 180 hp @ 5200 rpm.
How much torque does the engine in the 2005 Chevrolet Impala have?
The 2005 Chevrolet Impala's engine produces 205 ft-lbs. @ 4000 rpm.
How do you remove and change a 2005 Chevy impala thermostat?
The thermostat is located in the housing and the engine end of the top radiator hose. Remove the 2 bolts and replace the thermostat.
How do you replace temperature sensor for 2005 Chevy Impala?
how to get to it on the car,how long does it take.
Where is the gas filter located on 2005 impala?
under the engine to the left
How do you replace an engine air filter on a 2005 LS Chevy Impala 3.8 engine?
It's in the airbox at the front corner of the engine compartment (I can't remember which side). Check your owner's manual, it'll tell you where to find it and how to change it.
How remove the radiator from 2003 Chevy Impala?
i need a step by step instruction on how to remove or replace a radiator of a 2005 3.4L chevy impala
Why does my heater blow cold air in your 2005 impala?
I just had this problem on my 2005 Impala. My fix was a new thermostat. I also had the symptom of the engine temp swinging from hot to cold.
