Your vehicle has an EGR valve attached to the
intake manifold. About how to replace an EGR Valve, check this procedure...
1. EGR Valve
1. Scan Tool
2. 3/8 in. Drive Ratchet
4. Socket Set
Step 1 Locate the OBD-I or OBD-II data link connector (DLC). Refer to your vehicle owner’s manual for the specific location.
o Tip: The OBD-I data link connector is usually located in the engine compartment near the battery or the fuse box. The OBD-II connector (post 1995 cars) is usually located beneath the instument panel next to the steering column.
Step 2 Turn your key to the“ON” position. Do not start the engine.
Step 3 Plug your scan tool into the DLC and follow the manufacturer's steps to read the diagnostic trouble code. Codes between P0400-P0408 are generic trouble codes for the EGR system.
o Tip: The OBD-II diagnostic trouble code (DTC) is a 5 character alphanumeric code. The first digit is a letter that indicates the component group, the second digit is OBD mandated or manufacturer specfic, the third digit is a subgroup, and the fourth and fifth digits define the component and basic problem.
Step 4 To test the EGR valve: Remove the vacuum line to the valve and install a manual vacuum pump. Start the engine and apply vacuum to the valve. If the engine idle speed drops, the EGR valve is working. If the engine idle speed does not change, the EGR system is not working. Most engines will stall if you fully open the EGR valve while idling.
o Tip: Some vehicles are equipped with electronically controlled EGR valves. Use a scan tool to test these valves.
Step 5 Remove the vacuum line or electrical connector from the EGR valve.
Step 6 Remove the EGR mounting bolts. Remove the EGR valve.
Step 7 Using a new gasket, attach the new EGR valve with the original mounting bolts. Torque the bolts to the manufacturer's specifications.
Step 8 Reconnect the vacuum line or electrical connector.
Step 9 Erase any codes on the scan tool through the“delete” or“erase” command. Remove the scan tool.
Step 10 Road test your vehicle to verify the repair.
o Tip: If the check engine light returns, repeat the diagnostic process for additional DTCs or take your vehicle to a certified repair shop.
Check the RIGHT PART
before to take off the parts. Its possible that you can find few TSB in your library or dealer about this LINK