Question about 2004 Pontiac Grand Am
I heard gas tank needs dropped to replace ???? You should never listen to what you heard from someone who has no clue ! P0442 is a small leak
DTC P0442 Evaporative Emission (EVAP) System Small Leak Detected. You really should take it to a qualified repair shop .
EVAP Leaks P0442 and P0455
The evaporative emission system is tested by applying vacuum to the EVAP system and monitoring for a vacuum decay. The PCM monitors the vacuum level through the fuel tank pressure sensor signal. At an appropriate time, the EVAP canister purge solenoid valve and the EVAP vent solenoid are turned on, allowing the engine to draw a small vacuum on the entire evaporative emission system. Once the desired vacuum level has been achieved, the EVAP canister purge solenoid valve turns off, sealing the system. A small leak in the system will cause DTC P0442 to set.
Wells EVAP Training with Sgt Tech P0440 P0441 P0442 etc
Posted on Apr 24, 2017
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Posted on Jan 02, 2017
The code PO442 is a small leak somewhere in the evaporative emissions control system, the best way to find that is to take to a shop that does smoke tests for emissions.
As far as the nozzle, try changing the position of it the next time you get gas.
Posted on Nov 18, 2009
The o2 sensors are located on the exhaust system.The upstream in on the rear exhaust manifold and the down stream is in front of the catalytic converter.Usually when they are bad they will make the check engine like go on.Make sure the air filter is clean,tires at correct inflation,alignment is to specs.If the vehicles pulls to one side or the other or steering wheel is not straight when driving down a straight stretch of road.Also tires are wearing normal.Use cruise control where ever on highway.If you let your vehicle warm up in winter.This also uses gas.Hope this helps.Good luck.
Posted on Dec 23, 2009
Typically Jaguar fuel pumps are the submerged type (i.e. in the fuel tank) so you will need to remove the fuel tank or there might be a panel in the the tank that you can remove to get the the fuel pump. Good luck.
Posted on Sep 13, 2010
If you had the car scanned with a generic OBDII code reader (Which is what they use at all the parts stores) this is probably why it is not showing any codes. You have "Vehicle Specific" codes. This means that the problem with your Check Engine light is not a problem that will generate a "generic" OBD code. A generic OBD code reader will not read codes from your Antilock Brake System or your Traction Control System at all... You need to have it scanned professionally by someone who has the proper equipment and software to access the Controller Area Network (CAN) in your vehicle.
Posted on Feb 25, 2011
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