EVAP Line - Idle Dips On Turns/Deceleration

Article No.
01-9-4

05/14/01

^ DRIVEABILITY - IDLE DIPS BELOW 450 RPM -
WHEN TURNING OR ON DECELERATION - WITH
OVER 3/4 TANK OF FUEL IN TANK

^ DRIVEABILITY - STALL - WHEN TURNING OR ON
DECELERATION - WITH OVER 3/4 TANK OF FUEL IN TANK

FORD:
2000 RANGER

ISSUE
Some vehicles may exhibit a stall or idle dip (below 450 rpm) during deceleration or while turning that will only occur with a fuel tank level of 3/4 or greater. Generally the stall occurs with no Malfunction Indicator Lamp (MIL) or Diagnostic Trouble Code (DTC) present. This may be caused by a restriction at the "Y" connection in the rear fuel vapor line.

ACTION
To diagnose, disconnect the Vapor Management Valve (VMV) electrically (for test purposes only). If there is no change in the symptom, continue normal diagnostics by referring to Symptom Chart 1 in the Powertrain Control/Emissions Diagnosis (PC/ED) Workshop Manual. If the condition is resolved by disconnecting the VMV, reconnect the VMV and replace the rear fuel vapor line. Refer to the following Service Procedure for details.

SERVICE PROCEDURE

1. To access the rear fuel vapor line, remove the fuel tank. Refer to the 2000 Ranger Workshop Manual, Section 310-01.

2. Disconnect the fuel vapor line from the charcoal canister.

3. Remove the two (2) rear retaining clips from the frame rail. Remove the vapor line from the front two (2) retaining clips (leaving the clips in the rail).

4. Disconnect the fuel vapor line at the front disconnect (near the fuel filter).

5. Replace the fuel vapor line.

6. Reconnect the fuel vapor line in the front and rear.

7. Reinstall fuel tank. Refer to the Workshop Manual, Section 310-01.





Parts Block

OTHER APPLICABLE ARTICLES: NONE
WARRANTY STATUS: Eligible Under The Provisions Of Bumper To Bumper Warranty Coverage And Emissions Warranty Coverage

OPERATION DESCRIPTION TIME

010904A Replace Rear Fuel Vapor 1.4 Hrs.
Line (This Includes Time
To Remove And Install
Fuel Tank)

DEALER CODING
CONDITION
BASIC PART NO. CODE
9G291 17

OASIS CODES: 607000, 607700