2.6L engines use an air aspirator system which aids in reducing carbon monoxide (CO) and hydrocarbon emissions. The system uses pulsating exhaust pressure to draw fresh air from the air cleaner assembly. Failure of the aspirator valve will result in excess noise.
- Check the aspirator tube/exhaust manifold assembly joint and hoses. If aspirator tube/exhaust manifold joint is leaking, retighten to 50 ft. lbs. (68 Nm). If hoses are hardened, replace as necessary.
- Disconnect the inlet hose from aspirator valve.
- With engine at idle, the negative (vacuum) exhaust pulses should be felt at the valve inlet.
- If hot exhaust gases escape from the aspirator inlet, replace the valve.
REMOVAL & INSTALLATION
- Remove the air inlet hose from aspirator valve.
- Remove screws from aspirator bracket, and remove tube assembly from engine.
- Install tube and tighten nuts to 40 ft. lbs. (54 Nm).
- Install tube bracket assembly and tighten to 21 ft. lbs. (28 Nm).
- Connect the air hose to valve and air cleaner nipple; install clamps.