Questions & Answers for: Pontiac Bonneville high emissions

emissions inspection because the trouble codes P0301 and P1441 keep coming up.The check engine light has never come on, but it does show up when the car is first started along with the other monitors.

Intake Manifold Runner Control (IMRC) Solenoid Control Circuit High Voltage. You will need to have the factory emissions service manual to fix this, the tests require special GM test equipment as well

...A couple of ideas to start with: clogged/stuck injectors (most likely); stale fuel in the lines, high pressure pump (likely); vacuum leak (least likely)Hope this be of initial help/idea. Pls post ...

...high. The check gauges light and check oil comes on and off. The check engine light is on as well. This may not be your fix, but a place to start is having a technician check your EGR operation. ...

...are all emission faults P0453 OBD-II Trouble Code: Evaporative Emission Control Pressure Sensor High Input. P0453 code means that a reading from the engine's evaporative pressure sensor is higher ...

high emissions on any vehicle, and is very often forgotten, especially on bikes. also, make you get the engine and exhaust up to temperature before an emission test as the catalytic converter will not

...emissions the nox levels are to high this is the fourth try. what can i do. also my check engine light comes on as well. high NOX indicates your engine is running high combustion temps. Two of the ...

emissions, maximize fuel economy and improve consumer comfort. The various control systems in vehicles are interrelated and controlled by multiple computers that constantly monitor vehicle performance