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What is the cause of a 1999 Olds Intrigue 3.5L engine check light flashing when car runs rough with no acceleration and does not stall?

Common Issues:

Flashing CEL + Runs Rough + Acceleration Loss

- Random Misfire DTC(s) P03xx code (s) set

- Engine Misfire: Cylinder #5

- PCM Failure

- Ignition Coil Issue(s) causing Multiple Misfires

- Bad Spark Plug/Plug Wire causing Multiple Ignition Coil Codes on same Bank

- Fuel Injector Issues.