Chery T21 2014 Service Manual page 391

Engine starts normally, but idles roughly after warming up
Diagnosis Procedure
1
Check air filter for blockage, and intake pipe for air leakage
Check and repair intake system
NG
2
Check spark plug
a. Check spark plug of each cylinder, and observe if the type and gap are as specified.
Replace spark plug
NG
3
Check throttle for carbon deposits
Clean throttle
NG
Unplug coolant temperature sensor connector, start engine and observe if engine idles
4
normally during warming up
Check and repair wire harness or replace
OK
sensor
5
Check injector for leakage or blockage
Clean or replace injector
NG
6
Check fuel condition
a. Observe if trouble occurs just after fuel is filled.
Replace fuel
NG
Chery Automobile Co., Ltd.
06 - SQR484F ENGINE MANAGEMENT SYSTEM
OK
06
OK
OK
NG
OK
227
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