Tacoma Extra Cab 2WD L4-2438cc 2.4L DOHC MFI (1997)
EGR Valve: Testing and Inspection
EGR VALVE INSPECTION
Installation is in the reverse order of removal.
1. REMOVE EGR PIPE
Remove the bolt, 4 nuts, EGR pipe and 2 gaskets.
INSTALLATION HINT: Install 2 new gaskets.
Torque:
Bolt: 18 N.m (185 kgf.cm, 13 ft.lbf)
Nut A: 19 N.m (195 kgf.cm, 14 ft.lbf)
Nut B: 20 N.m (200 kgf.cm, 15 ft.lbf)
2. REMOVE EGR VALVE
(a) Disconnect these hoses:
(1) Vacuum hose
(2) EGR hose
(3) Water bypass hose (from IAC valve)
(4) Water bypass hose (from water bypass pipe)
(b) Remove the 2 nuts, EGR valve and gasket.
Torque: 19 N.m (195 kgf.cm, 14 ft.lbf)
3. INSPECT EGR VALVE
Check for sticking and heavy carbon deposits. If a problem is found. replace the EGR valve.
