Maintenance section
143
Checking the TMAP Sensor
(G420F(E) Engine Only)
1.
Verify that the TMAP sensor (F) is mounted
tightly into the manifold adapter (E), with no
leakage.
2.
If the TMAP is found to be loose, remove the
TMAP retaining screw and the TMAP sensor
from the manifold adapter.
3.
Visually inspect the TMAP O-ring seal for
damage. Replace as necessary.
4.
Apply a thin coat of an approved silicon lubricant
to the TMAP o-ring seal.
5.
Re-install the TMAP sensor into the manifold
adapter and securely tighten the retaining screw.
Inspect for Intake Leaks (G420F(E)
Engine Only)
1.
Visually inspect the intake manifold, throttle
assembly (2), and manifold adapters (3), for
looseness and leaks. Repair as necessary.
Replace PCV Valve and breather
element (LP-Gas, Gasoline and Dual
Fuel Engines) - Change
1.
Loosen the hose clamps and remove the PCV
valve.
2.
Assemble new PCV valve and hose.
3.
Tighten the hose clamps