Interesting Sound, Thoughts?
Wondering Around
Joined: Feb 2011
Posts: 1,686
Likes: 212
Maybe this.
TSB 10-18-4
09/27/10
LOW FREQUENCY ENGINE KNOCKING NOISE AT
HOT IDLE
FORD:
2009-2010 Expedition, F-150, F-250, F-350
LINCOLN:
2009-2010 Navigator
This article supersedes TSB 09-23-7 to update the vehicle model lines, Service Procedure and Service Labor Time Standards.
ISSUE
Some 2009-2010 F-150 and F-Super Duty vehicles equipped with a 4.6L 3V or 5.4L 3V engine, Expedition and Navigator vehicles may exhibit a low frequency knocking noise from the engine at hot idle only. The noise is predominately heard from the right front wheel well area and/or the right hand (RH) engine cam cover. This noise may be generated from the RH variable camshaft timing (VCT) phaser assembly. This procedure was created to diagnose the RH VCT phaser assembly.
ACTION
Follow the Service Procedure steps to correct the condition.
SERVICE PROCEDURE
The Integrated Diagnostic System (IDS) tests were developed specifically for the vehicles and Power Control Module (PCM) strategies for these vehicles.
Per Workshop Manual (WSM), Powertrain Controls and Emissions Diagnostics (PC/ED) and Scheduled Maintenance Guide, review customer service history for use of any aftermarket oil filters.
1. Check for possible diagnostic trouble codes (DTCs).
a. No DTCs present, proceed to St [...]
TSB 10-18-4
09/27/10
LOW FREQUENCY ENGINE KNOCKING NOISE AT
HOT IDLE
FORD:
2009-2010 Expedition, F-150, F-250, F-350
LINCOLN:
2009-2010 Navigator
This article supersedes TSB 09-23-7 to update the vehicle model lines, Service Procedure and Service Labor Time Standards.
ISSUE
Some 2009-2010 F-150 and F-Super Duty vehicles equipped with a 4.6L 3V or 5.4L 3V engine, Expedition and Navigator vehicles may exhibit a low frequency knocking noise from the engine at hot idle only. The noise is predominately heard from the right front wheel well area and/or the right hand (RH) engine cam cover. This noise may be generated from the RH variable camshaft timing (VCT) phaser assembly. This procedure was created to diagnose the RH VCT phaser assembly.
ACTION
Follow the Service Procedure steps to correct the condition.
SERVICE PROCEDURE
The Integrated Diagnostic System (IDS) tests were developed specifically for the vehicles and Power Control Module (PCM) strategies for these vehicles.
Per Workshop Manual (WSM), Powertrain Controls and Emissions Diagnostics (PC/ED) and Scheduled Maintenance Guide, review customer service history for use of any aftermarket oil filters.
1. Check for possible diagnostic trouble codes (DTCs).
a. No DTCs present, proceed to St [...]
Thread Starter
Member
Joined: Apr 2011
Posts: 36
Likes: 1
From: Canada
Update!
Got under the truck again today (better weather today!), heat shield above my driver side cat is really loose and is flapping against my cat. Thanks for all the help guys, now just gotta figure out how to hang it back up...
Got under the truck again today (better weather today!), heat shield above my driver side cat is really loose and is flapping against my cat. Thanks for all the help guys, now just gotta figure out how to hang it back up...