Chery QQ6 Service Manual page 116

Check if the exhaust system and three-way
catalytic converter are jammed.
Note: In case the engine is unable to reach its maximum revolution when accelerating, mainly check if
exhaust pipe is chocked and air cleaner is smudgy. In addition, for electric control system of A21, in case
of a failure in crankshaft or camshaft position sensor, ECU will take restrictive driving measures to
restrict engine revolution to exceed certain value, which should be noted during maintenance process.
No Replace ECU