When The Engine Is Cold, Idle Speed Fluctuates

When the engine is cold, idle speed fluctuates

Troubleshoot the injector control module circuit Injector Control Module Circuit Troubleshooting.

Replace the fuel filter A element Fuel Filter A Element Replacement.

Replace the fuel filter B element Fuel Filter B Element Replacement.

Troubleshoot the alternator FR signal circuit Alternator FR Signal Circuit Troubleshooting.

Inspect the PCV valve Testing and Inspection.

Also check for

Clogged injector