Chery SQR 7160 sedan. Manual - part 122
4.6 engines often stalls
Check step motor fault
1 check mount screw
2 short time vibration
should be felt when
ignition switch turned
on
1 repair or replace step motor
2 check step motor wire
3 replace or turn idle motor
mount screw
Check throttle position
sensor
Throttle position sensor and its
connection, repair or replace as
necessary.
Check throttle valve
gap; warm engine to
80℃, let engine idle,
cut off A/C. Use scan
tester to detect motor
steps. The total steps is
20-30.
1 If steps is not within
specification, adjust the initial
angle of throttle valve, ensuring a
correct total steps.
2 If there exists carbon or tar
deposits, please remove it.
Note: If reliable tool for testing
total idle steps is not available,
DO NOT adjust initial throttle
angle.
Watch each cylinder
firing check and ensure
spark plug and plug gap
is 8mm.
NOTE: Measure
compression pressure
and air valve gap
1 replace spark plug
2 cylinder compression pressure
3 valve gap
Check air intake
manifold pressure
sensor
Check air intake pressure sensor
and wire, repair or replace as
necessary .
Check circuit
connection
1 ECU voltage supply
fusible link
fuse
2 circuit wire test: using voltmeter
or ohmmeter measure voltage or
resistance
★ If engine stalls, check following components:
Air system leakage check