Chrysler Conquest 1988 Service Manual page 692

25-20
EMISSION CONTROL SYSTEMS 7
Evaporative Emissibn Control System
-. __~~
I_
!!!!ex-
__.._
Valve
/ ll-n
Therm0 sensdr for engine coolant
temperature detection
--
INSPECTION
(1) Disconnect the purge air hose from the air intake hose and
~~ c
plug the air intake hose. Then, connect a hand vacuum : EE
pump to the disconnected purge air hose.
(2) Check the following both whenthe engine is cold [engine
coolant temperature 45°C (T13"F) or less] and whenjt is hot
[engine coolant temperature 85 to 95C (185 to 205'F)I.
When engine is -cold
Vacuum
13 kPa
(I .9
psi)
Engine state
2,500
rpm
Normal condition
Vacuum is held
When enqrne IS hot
PURGE CONTROL VALVE
INSPECTION
N251ECBa
(1) Remove the purge control valve.
(2) Connect a hand vacuum pump to the vacuum nipple of the
purge control valve.
(3) Apply a vacuum of 53 kPa (7.7 PSI) and check air tightness.
(4) Blow in air lightly from the canister side nipple and check
conditions as _follows.
(5) Connect a hand vacuum pump to the positive pressure '
nipple of the purge control valve.
(6) Apply a vacuumm of 53 kPa (7.7 psi) and check air tightness.
_
THERM0 VALVE
INSPECTION
N25lFJDG ~_
(1) Disconnect the vacuum hoses (black and blue stripe) from
the therm0 valve and connect a hand vacuum pump to the
therm0 valve.
(2) Apply vacuum and check therm0 valve condition as follows.
Engine coolant temperature
Normal condrtron
_
45T (I 13°F)
or less
Vacuum leaks
80X (176'F) or more
Vacuum holds