Fulltext TSBs

Technical Service Bulletins

TSB
07-24-2
  • 6.4L ENGINE BUILT BEFORE 06/18/2007 – HEATER CORE NOISE – ALSO DESCRIBED AS GURGLING, RATTLE, OR SCRAPING NOISE
Publication Date: November 21, 2007

FORD:
2008 F-Super Duty

This article supersedes TSB 07-22-2 to update the description in the Issue statement.

ISSUE:

Some 2008 F-Super Duty vehicles equipped with a 6.4L engine and built before 6/18/2007 may exhibit a gurgling type noise coming from the heater core. It has also been described as a rattle or scraping noise. It has also been incorrectly identified as a torque converter concern.

ACTION:

Follow the Service Procedure steps to correct the condition.

SERVICE PROCEDURE

  1. Bring engine to normal operating temperatures.
  2. Raise engine RPM to 2500-2900 range.
  3. Using a hose clamp tool, crimp the heater inlet hose. If the noise goes away, replace the inlet heater hose.
  4. If the noise does not go away, proceed with normal diagnostics. Refer to the Workshop Manual (WSM), Section 100-04.

    NOTE:DO NOT ADD AN ADDITIONAL RESTRICTOR TO THE LINE OR MANUALLY MOVE THE EXISTING RESTRICTOR.

    NOTE:DO NOT REPLACE THE HEATER CORE.


PART NUMBERPART NAME
7C3Z-18472-KHeater Hose (With Auxiliary Heat Controls)
7C3Z-18472-LHeater Hose (Without Auxiliary Heat Controls)

WARRANTY STATUS:

Eligible Under Provisions Of New Vehicle Limited Warranty Coverage
IMPORTANT: Warranty coverage limits/policies are not altered by a TSB. Warranty coverage limits are determined by the identified causal part.

OPERATIONDESCRIPTIONTIME
072402A2008 F-Super Duty 6.4L Engine: Replace The Inlet Heater Hose, Includes Time To Perform Diagnosis Outlined In The Service Procedure (Do Not Use With 18472A)1.0 Hr.

DEALER CODING

BASIC PART NO.CONDITION CODE
18K57942