I have very similar problem with my 94 Villager (250K miles). The hesitation / bucking happens during acceleration when the gas pedal is depressed slowly from a stop. When I floor the accelerator, it almost has no problem. It runs fine at high speed and idles fine too. I have replaced throttle position sensor (TPS), front O2 sensor, distributor cap, rotor, spark plugs. Also I have cleaned the mass air flow (MAF). I also removed the vacuum from fuel pressure regulator. Removed the vacuum from EGR valve. None of these fixed the problem. When the engine is hot, the problem diminishes. I had no check engine light. I don't think it is the injectors since it runs fine at high speed and idle. Also runs fine without load at any RPM. I think the engine control system is somehow faulty, but dont know which part causing it.

Answered by handiono
1 question asked

check to see if you spilled any oil on anything electrical.

have the code pulled and get us that code so we can further help you.

Roy

Answered by ASEMaster6371 (expert)
24,852 answers provided

In my case on the 94 Villager, I have no check engine light.

Answered by handiono
1 question asked