Mechanics

MY CAR HESITATES WHEN ACCELERATES, HAS BAD GAS MILEAGE. HAS NO POWER

2005 Kia Optima • 123,000 miles


My car hesitates when accelerates, has bad gas mileage. Has no power.I have replaced rentiontly the following parts in last month. The o2 sensor just out side from engine, idle control valve, Maf sensor, and tps sensor.
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Gwalkerlhs
May 13, 2012.




Have you checked timing? Any warning lights on?

Tiny
Fixitmr
May 13, 2012.
The check engine lights is on, the code that comes up is( Maf sensor) to rich, and no I haven't check timing

Tiny
Gwalkerlhs
May 13, 2012.
Whats code #?
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Tiny
Fixitmr
May 13, 2012.
#0172

Tiny
Gwalkerlhs
May 14, 2012.
P0172 rich A/F mix

Probable causes of an engine running rich are as follows: 1. Excessive fuel pressure can be cause by restricted fuel return line

2. Defective Oxygen Sensors.

3. Leaking injectors and fuel pressure regulator.

4. Coolant temperature sensor out of calibration.

5. Restricted air intake system.

Rasmataz
May 14, 2012.

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