I have a 2002 chev impala 3400 eng it is all ways bogging down when i start to drive have changed the plugs and wires and still dose it can some one help me please

Asked by Aug 03, 2013 at 09:28 PM about the 2002 Chevrolet Impala Base

Question type: Maintenance & Repair

I have changed the plugs and wires thought it was the trannie but they said no when cold
its fine but when worms up and i step on the gas pedal it will bog down until you reach
about 40 klicks then its fine

5 Answers

check your fuel pressure regulator at the vacuum connection...then replace it if the diaphragm isn't movin' when you apply vacuum...also check the source vacuum so make sure the vacuum line isn't cracked...replace with silicone ones~

The TPS or accelerator sensor can produce the symptoms you are describing~

since it seems to be temperature related am going to suggest an intake air temperature sensor~

maby fuel pressure regulator very common on that car

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