Oldsmobile/Buick Repair: help with car running a little strange, intermittent faults, vacuum line

Question
i have a olds 93 98 regencywhen i step on the gas after it warms a little it labors and sort of lays back  changed wires and spark plugs where else should i look  

Answer
What mechanical work or ANY kind of work has been performed on the vehicle recently ?. As most problems that occur after a recent repair was made can be traced back to the area of where the repair was made as a vacuum line may have been knocked loose or a wire connection came loose, Look around in the area where work was performed.

There could be numerous possibilities such as:

1. intermittent fault in the TPS that may NOT illuminate the CHECK ENGINE light on the dash as most intermittent faults may NOT illuminate the light.

2. Exhaust restriction such as a partially restricted catalytic converter of which an EXHAUST BACK PRESSURE TEST must be performed.

3. Intermittent fault in the crankshaft, camshaft sensor or a coil pack problem, ignition module intermittent fault.


the vehicle must be driven by a qualified technician in order to determine an exact fault.


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