Regal V6-191 3.1L (1991)
Intake Air Plenum: Service and Repair
Air Plenum And Fuel Rail Removal
REMOVAL:
1.
Disconnect the negative battery cable.
2.
Disconnect the vacuum lines, making note of their positions.
3.
Remove the EGR to plenum nuts.
4.
Remove the two throttle body attaching bolts, throttle body and gasket, discard gasket.
5.
Remove the throttle cable bracket bolts.
6.
Remove the ignition wire plastic shield bolts.
7.
Remove the plenum bolts.
8.
Remove the intake manifold plenum and gaskets, discard gaskets.
9.
Clean the gasket sealing surfaces.
INSTALLATION:
1.
Locate the new plenum gaskets on the intake manifold.
2.
Install the intake manifold plenum on the intake manifold.
3.
Install the plenum mounting bolts and tighten to 10 Nm (88 lb.in.).
4.
Install the ignition wire plastic shield bolts.
5.
Position the throttle body in place and tighten the bolts to 25 Nm (18 lb.ft).
6.
Mount the EGR valve on the plenum and tighten the nuts.
7.
Install the throttle cable bracket and bolts, tighten.
8.
Connect the vacuum lines.
9.
Connect the negative battery cable.
IDLE LEARN PROCEDURE: Any time the battery is disconnected, the programmed position of the IAC valve pintle is lost, and replaced with a
default value. To return the IAC valve pintle to the correct position, perform the following procedure:
