Chery A11 2003 Repair Manual page 657

No Problem causes
1. Fuel injector fault
Crankshaft speed and position sensor
2
fault
3 ECU socket fault
4 Idle speed control valvel fault
Loosen throttle valve body mounting
5
screw
(2) Insufficient engine power
No. Problem Causes
1 Poor electric fuel pump operation
2 Blocked fuel filter or pipe
Insufficient or unstable fuel feed
pressure
3
Insufficient air intake
Damaged fuel injector
Damaged air intake pressure
sensor
Damaged crankshaft speed and
position sensor
3
Damaged throttle position sensor
Optimum ignition
reached
Actions
check if fuel injector operating condition
normal using scan tester.
Using feeler gauge, check clearance
crankshaft speed and position sensor head
and signal wheel tooth top. Check sensor
circuit.
Check if good contact between socket and
ECU.
Using scan tester, check idle speed control
valve operating condition, and inspect if
connector contact is good.
Tighten throttle valve body mounting
screw
Actions
Check if all connections good. Check electric fuel
pump, replace as necessary.
Check if fuel filter and fuel pipe blocked, clean or
replace fuel pipe as necessary.
Check fuel circuit and electric fuel pump.
Check if fuel injection pressure is within
specification.
Check air intake pipe
Check fuel injector performance data and
injection hole, replace as necessary
Check air intake pressure sensor performance
data, replace as necessary.
Check crankshaft speed and position sensor
performance data, replace as necessary/
Check throttle position sensor performance data,
replace as necessary.
time not
Replace ECU