Runs ruff and idles ruff if u throttle it a little it stays at 1.5 rpm then after 20 seconds goes to .5 rpm and idles ruff again.All Cylinders have good compression. My Cadillac converter is not clogged new fuel pump and fuel strainer. New vacuum solenoid also it takes sometimes time to rev the engine when u floor the throttle rpms don't raise right away they slowly increase very ruff. The problem started with car slowly loosing power now it has very little power also I changed a new ecu
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