2002 JEEP LIBERTY turn

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Page 1275 of 1803

JEEP LIBERTY 2002 KJ / 1.G Workshop Manual DIAGNOSIS AND TESTING
DIAGNOSIS AND TESTING - ENGINE OIL LEAK
Begin with a thorough visual inspection of the
engine, particularly at the area of the suspected leak.
If an oil leak source is not readil

Page 1276 of 1803

JEEP LIBERTY 2002 KJ / 1.G Workshop Manual DIAGNOSIS AND TESTING - REAR SEAL AREA
LEAKS
Since it is sometimes difficult to determine the
source of an oil leak in the rear seal area of the
engine, a more involved inspection is necessary. The
fo

Page 1277 of 1803

JEEP LIBERTY 2002 KJ / 1.G Workshop Manual ple viscosities such as 5W-30 or 10W-30 in the 3.7L
engines. These are specified with a dual SAE viscos-
ity grade which indicates the cold-to-hot temperature
viscosity range. Select an engine oil tha

Page 1278 of 1803

JEEP LIBERTY 2002 KJ / 1.G Workshop Manual OIL FILTER
REMOVAL
All engines are equipped with a high quality full-
flow, disposable type oil filter. DaimlerChrysler Cor-
poration recommends a Mopartor equivalent oil
filter be used.
(1) Position

Page 1280 of 1803

JEEP LIBERTY 2002 KJ / 1.G Workshop Manual OIL PRESSURE SENSOR/
SWITCH
DESCRIPTION
The 3±wire, solid-state engine oil pressure sensor
(sending unit) is located in an engine oil pressure
gallery.
OPERATION
The oil pressure sensor uses three ci

Page 1300 of 1803

JEEP LIBERTY 2002 KJ / 1.G Workshop Manual ENGINE - 2.4L
DESCRIPTION
The 2.4 Liter (148 cu. in.) in-line four cylinder
engine is a double over head camshaft with hydraulic
lifters and four valve per cylinder design. The engine
is free-wheeling

Page 1301 of 1803

JEEP LIBERTY 2002 KJ / 1.G Workshop Manual (7) Crank engine until maximum pressure is
reached on gage. Record this pressure as #1 cylinder
pressure.
(8) Repeat the previous step for all remaining cyl-
inders.
(9) Compression should not be less

Page 1313 of 1803

JEEP LIBERTY 2002 KJ / 1.G Workshop Manual DESCRIPTION SPECIFICATION
Valve Springs
Free Length (Approx.) 48.4 mm
(1.905 in.)
Nominal Force (Valve
Closed)338 N @ 38.0 mm
(75.98 lbs. @ 1.496 in.)
Nominal Force (Valve
Open)607 N @ 29.75 mm
(136 l