2001 Volkswagen Cabriolet acceleration

TWHITE82

MEMBER
2001 VOLKSWAGEN CABRIOLET
4 CYL
2WD
AUTOMATIC
130,000 MILES

My 2001 Cabrio has poor acceleration. It takes forever to get up to speed. The engine light indicates a mass air flow problem. I replaced it with a used one. The problem is still there most of the time. Is there a way to fool the MAF to see if it is still bad? Is there anything else that can be causing the problem? I changed the fuel filter a few years ago.
The air filter looks good.

1 Reply

RASMATAZ

MECHANIC
75,992 POSTS

Lack of acceleration, chugging, hesitating, bogging etc. Could be caused by one of the following below.

Inspect and test all the following listed below and get back with some results

Oxygen sensor.
Catalytic converter.
Fuel injectors dirty/sticking.
Mass airflow sensor/Airflow meter.
Throttle position sensor.
Manifold absolute pressure sensor.
EGR Valve
Fuel pressure regulator leaking or defective fuel pump.
False air leakage.
Fuel contamination.
Foul/defective spark plugs.
Open spark plug wires.
Ignition coil/Coil packs defective.
Incorrect ignition timing.
Cap and rotor.

Note:If it doesn't apply disregard.