Cooling System - Lack of Heat/MIL ON/DTC P0125 Set

Article No.
99-16-2

08/09/99

^ LAMP - MALFUNCTION INDICATOR LAMP (MIL)
ILLUMINATED WITH DIAGNOSTIC TROUBLE CODE
(DTC) P0125 STORED IN MEMORY - LACK OF
HEAT - VEHICLES WITH 2.3L OR 2.5L ENGINE

^ COOLING SYSTEM - LACK OF HEAT - VEHICLES
WITH 2.3L OR 2.5L ENGINE

FORD:
1993-1999 RANGER

ISSUE
The Malfunction Indicator Lamp (MIL) may illuminate with Diagnostic Trouble Code (DTC) P0125 stored in memory, and/or a lack of heat with the climate control may occur on some vehicles. This may be caused by sand from the engine block casting getting trapped within the thermostat mechanism.

ACTION
Replace thermostat with a revised thermostat. Refer to the following Service Procedure for details.

SERVICE PROCEDURE

1. Verify concern.

2. Flush the cooling system as outlined in the appropriate year Ranger Service/Workshop Manual.

3. Replace thermostat with revised Thermostat (YS4Z-8575-AA). Refer to the appropriate year Ranger Service/Workshop Manual for thermostat removal and replacement procedures.

4. Fill cooling system with appropriate mix of Engine Coolant (E2FZ-19549-AA) and water.

5. After repairing, verify normal engine operating temperature and normal heat air flow through the climate control.

PART NUMBER PART NAME

YS4Z-8575-AA Thermostat
E2FZ-19549-AA Engine Coolant

OTHER APPLICABLE ARTICLES: NONE

WARRANTY STATUS: Eligible Under The Provisions Of Bumper To Bumper Warranty Coverage And Emissions Warranty Coverage

OPERATION DESCRIPTION TIME

991602A Flush Cooling System And 1.6 Hr.
Replace Thermostat

DEALER CODING
CONDITION
BASIC PART NO. CODE
8575 55

OASIS CODES: 206000, 208000, 208100, 402000, 499000, 698298