Rough Running 88

Before I part out my car; any ideas on a rough running engine? Ignition is new, plugs are perfect, idle is smooth. At the start of acceleration and hard acceleration the engine becomes extremely rough. And getting worse. Not driveable anymore.

ECU is 13 years old. Original LH. Problem is about 4 years old and getting worse. Ideas? Opinions? Crude remarks?

Thanks for the help

fuel, fuel filter, fuel injectors?

I'd run a can or 3 of cleaner through the fuel system.......if it runs better you know where to start.

MAF issue perhaps, you could have it rebuilt. I had mine done, I think it was $150. As I recall, if you disconnect the wiring to the MAF, and it makes little or now difference, then it is "a" problem, even if not "the" problem.
When you say ignition is new, I am not sure what that means. spark plug wires? coil wires? coils? coil amplifiers?
Any such issue should wear on the plugs at some point.

Rough running could be one or more of your cylinders not firing. Can you narrow it down to which cylinders? After you do that, you can find what is preventing those cylinders from firing, ie fuel issues or ignition issues. And as Stan says above, it could be the MAF needing a new connection or needing to be rebuilt.

Spark plugs reveal a lot on rough running cars. I'd pull them all to check their condition. Take photos of them and post it here. Coordinate your pictures so that we all will see your plugs in chronological order, from #1 cylinder to #8 cylinder.

First of all, thank all of you for your response to this problem. Outstanding!

MAF disconnect= engine doesn't run, connector looks great

Ignition System= everything replaced to include;coils, wires, caps and rotors, plugs

Spark plugs= all look great

Coil amps= connectors look fine but will swap to see what happens

Fuel Filter & pump= replaced 2 years ago. Will do a fuel pressure check

Injectors= never been out.

Did do a diagnostic with DT999 software. Discovered; Temp II sensor fault, Hall sensor fault, O2 Lambda sensor fault. Car ran with these albeit with vibration at initial acceleration and then again under hard acceleration and above 90 mph. Vibration at speed is felt in steering wheel and console.

Vibration is now continuous, increasing with acceleration.

Thanks for the help!