Tacoma 2WD V6-3.4L (5VZ-FE) (1995)
EGR Backpressure Transducer: Testing and Inspection
1. DISCONNECT VACUUM HOSES FROM EGR VACUUM MODULATOR.
Disconnect these vacuum hoses:
-
Vacuum hose from R port.
-
Vacuum hose from Q port.
-
Vacuum hose from P port.
2. INSPECT EGR VACUUM MODULATOR OPERATION.
-
Block ports P and R with your finger.
-
Blow air into port Q, and check that the air passes through to the air filter side freely.
-
Start the engine. and maintain speed at 3,500 rpm.
-
Repeat the above test. Check that there is a strong resistance to air flow.
3. RECONNECT VACUUM HOSES TO EGR VACUUM MODULATOR.
Connect these vacuum hoses:
-
Vacuum hose to R port.
-
Vacuum hose to Q port.
-
Vacuum hose to P port.