Symptom Chart

WARNING: This page is about a different car, the 2004 Mercury Monterey and 2004 Ford Freestar. However, it is still accessible from the selected car via links, so may be relevant.

SYMPTOM CHART

Condition	Possible Sources	Action
Hissing sound when removing fuel cap	Canister vent solenoid. Evaporative emissions canisters. Fuel vapor control valve tube assembly. EVAP canister tube. EVAP canister purge outlet tube.	Go To PINPOINT TEST D: HISS WHEN OPENING FUEL CAP .
Excessive fuel odor	Canister vent solenoid. Evaporative emissions canisters. Fuel vapor control valve tube assembly. Evaporative emissions test port. EVAP canister purge outlet tube.	Go To PINPOINT TEST D: HISS WHEN OPENING FUEL CAP .
Slow fuel fill	Restriction in the canister vent solenoid, dust filter, carbon canisters and canister attachment hoses or vent tubing. Restriction in the fuel fill hose or fuel fill pipe.	Go To PINPOINT TEST D: HISS WHEN OPENING FUEL CAP .