Engine codes I need help...

[stephanieoflv]

Okay I have a 2003 concorde and the check engine light popped on . I have checked the codes and the codes are PO440, PO441,PO138 and PO340.... I know one of the has to do with the gas cap but the rest I am lost . Can ANYONE tell what the cost of all this is gonna cost me and what the heck is wrong. The car has all of a sudden become sluggish ... help

[BlueDjinn]

stephanieoflv, someone said it's your gas cap? Well, the gas cap is part of the EVAP system. This is the control of evaporative fumes. The gas cap has to work with the charcoal canister, purge solenoid, vent solenoid, flow monitor, leak detector and connecting tubes, lines and hoses. This would be your PO440 and PO441 codes. PO440 is calling attention to the EVAP system, wheras PO441 is suggesting a "purge flow" problem with the EVAP system.
The purge solenoid should be checked. The computor controls the purge solenoid by either energizing it or denergizing it depending on the type of solenoid. Check electrical wiring and connections first. Check supplied voltages. Don't let anyone be too quick to condemn the computer. It seldom is the computer. Most electrical troubleshooting is unintentional grounds, shorts or open circuits.
Your PO138 means that the O2 sensor is actually doing it's job properly in reference to the code PO440-441. Your attention is being called to the O2 sensor as it has shown a "high voltage" signal to the computer. The O2 sensor has one job and one job only. It senses oxygen in the exhaust stream. It does nothing else. A lack of oxygen in the exhaust stream indicates an overly rich fuel mixture, quite possibly due to the EVAP system fault.
Don't be thinking mega "high voltage" here either. The O2 sensor works within and up to one volt so a high voltage signal means that it's working to the high side of one volt. The computer sees this "rich" signal and compensates by adjusting (decreasing) the pulse width modulation (frequency) to the fuel injectors to cancel the fuel "dump".
Probably why the car is gutless. The computer is compensating for rich by leaning the fuel injection to the point where the engine will hardly run.

The PO340 is suggesting a Camshaft Position Sensor/Circuit Malfunction.
The cam sensor can cause a lot of driveability problems including no start and it should be checked. As your car is still running it should be scoped by a competent technician.
As for the cost; the shop rate where I am is 65-70 dollars an hour labour, not including parts. What parts do you need? I don't know, I'm not working on your car.

I hope that I've been of some assistance seeing as how there were 48 views of your post and no replies.