Heater - Low Output in Cold Temperatures: Overview
NO: 07-01-96GROUP: Cooling
EFFECTIVE DATE: Feb. 3, 1997
SUBJECT:
Low Heater Output
In Cold Temperatures
MODELS:
1994-1997 (BR) Ram Trucks
NOTE:
THIS BULLETIN APPLIES TO RAM TRUCKS EQUIPPED WITH THE 8.0L ENGINE BUILT BEFORE OCTOBER 1, 1996 (MDH 10-01-XX).
SYMPTOM/CONDITION:
Low heater output during cold ambient conditions.
DIAGNOSIS:
NOTE:
THE FOLLOWING DIAGNOSIS MUST BE PERFORMED WITH AMBIENT TEMPERATURES BETWEEN 20° F TO 32° F.
Using the Scan Tool (DRB III) and appropriate Diagnostic Procedure Manual or Mopar Diagnostic System (MDS), verify that all engine systems are functioning correctly. If Diagnostic Trouble Codes (DTC's) are present, record them on the repair order for future reference and repair as necessary. Drive the vehicle a minimum of ten minutes while monitoring the Engine Coolant Temperature (ECT) sensor with the DRB III using the SENSOR display screen. If the ECT sensor temperature reading does not rise to or remain above 180° F. during the ten minute road test, perform the Repair Procedure.
PARTS REQUIRED:
1 53006047 Thermostat Housing
1 55035944 Heater Supply Fitting
1 53005868AB Thermostat Housing Gasket
1 53021074AB Water Pump Assembly
1 53021072 0-Ring, Water Pump
AR(1) 04318034 Mopar Thread Sealant With Teflon
POLICY: Reimbursable within the provisions of the warranty.
TIME ALLOWANCE:
Labor Operation No: Replace Water Pump Assembly, 1994 And 1997 Ram Trucks
07-50-01-91 1.0 Hrs.
Replace Water Pump Assembly And Thermostat Housing, 1995 -
1996 Ram Trucks
07-40-05-93 1.7 Hrs.
FAILURE CODE: P8 - New Part