Precis L4-1468cc 1.5L SOHC (1993)
Thermo Valve, EGR: Testing and Inspection
Fig. 34 Testing The Thermo Valve (Federal Only)
1.
Disconnect the vacuum hoses from the thermo valve and connect a hand vacuum pump to the nipple of the thermo valve.
2.
Apply vacuum and verify that when the engine is cold (coolant temperature less than 50 degrees C or 122 degrees F) vacuum leaks.
3.
Allow the engine to warm up (coolant temperature greater than 80 degrees C or 176 degrees F), apply vacuum and verify that vacuum is held.
4.
If it is necessary to remove the thermo valve do not apply a wrench to the resin part of the valve. Re-install the thermo valve using 3M locking
sealant 4171. Torque the thermo valve to 20-40 Nm or 15 - 30 ft. lbs.
5.
Reconnect the vacuum hoses.