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Is there a check engine lite on? i am thinking a coolant temp sensor is reading wrong starving it for fuel.
No check engine light is on.
Verify air intake system is unrestricted. Check EGR valve and solenoid for correct operation (if equipped). Check No. 1 and No. 2 purge control valve operation. Check vacuum switching valve operation. Check coil resistance. Check airflow meter for cracks. Check airflow operation and resistance value. Check atmospheric pressure sensor. Check secondary air injection system (RX7). Check Variable Dynamic Intake System (VDIS RX7). Check Variable Resonance Induction System (VRIS) for correct operation (MPV 3.0L, 929 SOHC and DOHC). Check Variable Inertia Charge System (VICS) for correct operation (Protege 1.8L DOHC). Verify connector at crank angle sensor has correct resistance values. Check A/C cut-off system (if equipped). Check Triple Induction Control System (TICS) for correct operation (929 SOHC). Ensure fuel system pressure is correct. Use ohmmeter to verify fuel injector terminal resistance.
here are a few checks listed under poor acceleration listed in my michell manual. thank you jim
2003 Jetta left rear window blue plastic part of the