Geely Diagnosis Flow. Manual part - 4
13
No. 007 Poor accelerating performance in cold condition
Malfunction Cause
Solution
Improper gasoline quality
Clean fuel pipe and replace clean gasoline, 93# or above.
Low gasoline pressure
Check filter, whether it is blocked. As well as fuel pressure
controller, whether it operates normally, replace it when
necessary. Check gasoline pump pressure whether the value
is normal, maintain or replace it when necessary.
Air filter blocked
Check air filter, whether it is blocked, clean or replace it when
necessary.
Low cylinder pressure
Check cylinder pressure, whether there is carbon deposit at
intake valve, as well as valve leaking and cylinder wearing
malfunction. Maintain or replace then according to the
malfunction.
Idle speed controlling valve or
stepping motor operates abnormal
Clean or replace idle speed control valve or stepping motor
Throttle malfunction
Check throttle body, whether it is stuck, clean or replace it
when necessary.
Ignition system malfunction
Check ignition coil, wire and spark plug, whether they are
malfunction, replace them when necessary.
Intake temperature pressure sensor
Pressure sensor malfunction. Check the resistance and
voltage, whether the value is in normal range. Replace the
sensor when necessary.
Oxygen sensor malfunction
Check oxygen sensor, whether the heating function is normal.
As well as the voltage signal, whether it varies between 0.1V
and 0.9V.
Intake manifold leaking
Check the vacuum, whether the value is in normal range.
Check the connecting condition of each vacuum hose, as well
as intake/exhaust manifold gasket, whether it is damaged.
Ignition timing maladjustment
Check tachometer sensor signal and ignition datum, whether
they are normal.
Poor accelerating
performance in cold
condition,
particularly in low
speed and middle
speed.
ECU and connecting circuit
malfunction
Check ECU, whether it is malfunction. Check connecting wire,
whether it is of poor contact. Maintain or replace it when
necessary.