Question about Cars & Trucks
Most places charge an hour's labor for the diagnosis at whatever the labor rate may be. The cost will be contingent upon the actual problem and what it takes to fix it (electrical issues, parts required...) the repair could range from 300.00 to 600.00 depending on whats wrong with the system. Take a look at your gas cap make sure the o-ring isn't cracked. If its ok reinstall it maiking sure it goes on tight. Locate the vent solenoid. the vent solenoid is normally open so when you ground it it should seal. You could use a vacuum pump and apply vacuum to the vent through the hose and see if the vacuum holds if it doesn't replace the solenoid. Ground the solenoid several times and listen for it to clickif at any time it stops clicking replace it. To do this you will need the ignition on disconnect the plug and with a test light identify power and ground. Back probe the ground wire and reconnect the plug the the solenoid. Connect one end of a jumper wire on a good ground and with the other end tap the back probe several times.
Posted on Oct 27, 2012
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Posted on Jan 02, 2017
You need a charcoal canister and vent control valve.
You also need the EGR solenoid valve (I think it the brown one).
Valve is located in the valley of the V, towards the transmission side of engine.
Do these 1st and reset light. You may have other issues but you have to start here.
Posted on Sep 16, 2008
SOURCE: 1998 PONTIAC SUNFIRE ADVISE
Exhaust Gas Recirculation System Is the main problem here. the other code P0118 may be a bad temprature sensor or your thermostate needs to be changed. Last it could be a weak water pump.
So what is an EGR system and how does it work? EGR stands for Exhaust Gas Recirculation, and as its name implies, this system allows exhaust gasses from your car to be re-circulated into the engine, helping to reduce emissions. These systems are mostly comprised of the EGR valve, a DPFE (Delta Pressure Feedback EGR) sensor, hoses, a vacuum regulator, some vacuum lines, wiring, the computer and the exhaust tube leading to the valve itself.
The car's wiring can be tested in the normal fashion by looking for broken and lose wire, and all vacuum lines can be checked easily for cracks, leaks and correct routing.
The last thing i would then check is the the EGR valve, EGR vacuum regulator and DPFE sensor (or similar flow sensor).
I hope this helps and good luck
Posted on Apr 09, 2009
Tips for a great answer:
An EVAP canister, vent hose, or vent solenoid valve that has restricted flow may cause this DTC to set. Using a purge solenoid command with a scan tool will allow vacuum to be applied to the system instead of pressure. With the engine running, the EVAP canister vent solenoid valve open, and the EVAP canister purge solenoid valve commanded to 100 percent, the fuel tank vacuum should not increase to more than 5 inches H2O.
An EVAP canister filter that is restricted can cause this DTC to set. Refer to Evaporative Emission Canister Replacement .
Disconnecting one component at a time while the EVAP system is under flow will help to pinpoint a restriction in the system
Do you have a scan tool that reads data PID'S ?
Your FTP - fuel tank pressure sensor could be at fault !
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