LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Ford >> 1990 >> Tempo Base >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> Engine Controls - Tests W/Codes - 2.3L >> Test H - Fuel Control >> Code 86
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Code 86

Excessive lean fuel mixture condition corrected (made richer) by adaptive fuel strategy.

If an over-rich fuel condition is suspected or experienced, check ignition system. Burn off fuel deposits on HEGO by operating the vehicle at sustained high (legal) speeds followed by a few hard acceleration runs. This will allow the HEGO contamination to be burned off. Check the following areas:

scientia non olet · About LEMON Manuals