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Home >> Ford >> 1991 >> Taurus L4-153 2.5L HSC >> Repair and Diagnosis >> Powertrain Management >> Fuel Delivery and Air Induction >> Testing and Inspection >> Symptom Related Diagnostic Procedures >> Lack of Power, Sluggish

Lack of Power, Sluggish


Definition: Engine delivers less than expected power. Little or no increase in speed, when accelerator pedal is pushed down part way.

POSSIBLE CAUSE ACTION

Contaminated fuel - Check for water or excessive alcohol in fuel
- Drain fuel tank and add clean fuel

Lead contamination of catalytic converter - Check for missing fill pipe restrictor
- Replace catalytic converter

Low fuel pressure - Check fuel pressure, refer to FUEL SYSTEM DIAGNOSIS

Pinched or collapsed fuel hose/line - Repair/replace as required

Throttle valve not fully opening - Check accelerator pedal travel (Floor mat/carpet interference)
- Check throttle cable adjustment

Dirty air filter - Clean or replace