Chevrolet Repair: Hesitation, 1995 chevy lumina, chevy lumina

Question
-1995 Chevy Lumina Sedan
-3.1 litre V6, auto trans.
-114,000 miles.
-Plugs changed at 56,000 miles
 When driving locally, speed between 20-35mph, hesitation occurs after slowing down and accelerating again. If I accelerate hard into passing gear no hesitation occurs, only during light acceleration.  It happens most while trying to accelerate out of a turn.  No problem from a stop or on the highway. Problem has be come more frequent over the past few months.
Thank you


Answer
Hesitation acn be caused by:


1. Low fuel pressure/volume.

2. any sort of vacuum leak in any of the numerous hoses on the engine.

3. normal buildup of foreign material in the throttle body assembly.

4. inaccurate intermittent fault in the TPS (Throttle Positioning Sensor) of which may or may NOT illuminate the CHECK ENGINE light on the dash panel.

There are just so many possibilities that this is going to take some time consuming expert hands on diagnostics to find the cause.


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