Whistling noise no TS or Cold air intake
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Joined: Apr 2009
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From: Louisville ky
Whistling noise no TS or Cold air intake
I have started to get a very annoying whistle what seems to be coming from the front of the motor. This is my first year owning the truck and everything was great until it got cold, after temps dropped below 35 to 40 degrees and I maintain a constant throttle position (usually around 2k) I get a whistle that sound like rubbing your finger on a wine glass.
My intake system is stock. My exhaust system is a consists of front 2.5" test pipes (no cats), and two mufflers inline. Any ideas or thoughts are appreciated.
My intake system is stock. My exhaust system is a consists of front 2.5" test pipes (no cats), and two mufflers inline. Any ideas or thoughts are appreciated.
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Joined: Oct 2009
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From: Everett, Pa.
There's a lot of threads bout this I just bought my truck it whistles only for a few seconds after starting it but from what ive gathered from the other threads it is the alternator or the belt tensioner. some said there dealer said it was from the air intake being cold. I hope this helps
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From: Louisville ky
Well thanks for the info, I did check my belt and looked at my tensioners prior to posting, and all looked good. I am starting to lean toward the fan clutch, is there anyway this noise could be the clutch. Also the cooling system is working perfectly is it possible to have a clutch failing when it seems to be working correctly
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Joined: Jan 2009
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From: Concord, NC
I get this too once the temps drop. Doesn't do it all the time. Truck runs like a chance and no issues at all. Did it last night as a matter of fact. Also did it once in a while last winter. I am not worried about it. Truck runs the best it ever has and never had a loss in power when this happened. These are machines with moving parts... the cold is sure to have an effect on them.
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From: Louisville ky
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Joined: Nov 2008
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From: Sugarland,TX
lol. Most believe its the tensioner, I only get it in the single digit temps in cold starts. Not sure what causes it but it still runs. First time it happened I walked out to start it, and walked back inside, as soon as I walked past the front of the truck it whistled that and I kicked the bumper hard, got that hurt my ears.
There is a TSB about this:
TSB 09-9-7
05/18/09
COLD START FEAD HOOT - WHISTLE NOISE
FORD:
2007-2008 Mustang, Expedition, Explorer Sport Trac, Explorer, F-150, F-150
LINCOLN:
2007-2008 Mark LT, Navigator
MERCURY:
2007-2008 Mountaineer
This article supersedes TSB 8-4-2 to remove the production build date.
ISSUE
Some 2007-2008 F-150, Mustang vehicles equipped with a 4.6L and 5.4L engine; 2007-2008 Mark LT, Expedition, Navigator vehicles equipped with a 5.4L engine; Explorer, Mountaineer, Explorer Sport Trac vehicles with 4.6L engine may exhibit a front end accessory drive (FEAD) related high-pitched metallic whistle/hoot noise after a cold soak in ambient temperatures below 40 °F (4.4 °C). This noise may be caused by the grooved nylon FEAD idler pulley.
ACTION
Follow the Service Procedure steps to correct the condition.
SERVICE PROCEDURE
NOTE FEAD IDLER PULLEY NOISE MAY BE MOST APPARENT AT OR NEAR COLD ENGINE IDLE SPEEDS (APPROXIMATELY 1200 RPM). NOISE DURATION IS LESS THAN 10 MINUTES AFTER STARTUP AND WILL BE ELIMINATED WITH FEAD BELT REMOVED.
1. Replace the nylon FEAD idler pulley, refer to Workshop Manual, Section 303-05.
Parts Block
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.
OPERATION DESCRIPTION TIME
090907A 2007-2008 F-150/Mark LT 0.3 Hr.
4.6L/5.4L: Replace FEAD
Idler Pulley Includes Time
To Remove And Install
Serpentine Belt (Do Not
Use With 8678A, 8620F)
090907A 2007-2008 0.4 Hr.
Expedition/Navigator:
Replace FEAD Idler Pulley
Includes Time To Remove
And Install Serpentine Belt
(Do Not Use With 8678A,
8620F)
090907A 2007-2008 0.4 Hr.
Explorer/Mountaineer/
Sport Trac 4.6L: Replace
FEAD Idler Pulley Includes
Time To Remove And
Install Serpentine Belt (Do
Not Use With 8678A,
8620F)
090907A 2007-2008 Mustang 4.6L: 0.3 Hr.
Replace FEAD Idler Pulley
Includes Time To Remove
And Install Serpentine Belt
(Do Not Use With 8678A,
8620F)
DEALER CODING
CONDITION
BASIC PART NO. CODE
6C348 42
05/18/09
COLD START FEAD HOOT - WHISTLE NOISE
FORD:
2007-2008 Mustang, Expedition, Explorer Sport Trac, Explorer, F-150, F-150
LINCOLN:
2007-2008 Mark LT, Navigator
MERCURY:
2007-2008 Mountaineer
This article supersedes TSB 8-4-2 to remove the production build date.
ISSUE
Some 2007-2008 F-150, Mustang vehicles equipped with a 4.6L and 5.4L engine; 2007-2008 Mark LT, Expedition, Navigator vehicles equipped with a 5.4L engine; Explorer, Mountaineer, Explorer Sport Trac vehicles with 4.6L engine may exhibit a front end accessory drive (FEAD) related high-pitched metallic whistle/hoot noise after a cold soak in ambient temperatures below 40 °F (4.4 °C). This noise may be caused by the grooved nylon FEAD idler pulley.
ACTION
Follow the Service Procedure steps to correct the condition.
SERVICE PROCEDURE
NOTE FEAD IDLER PULLEY NOISE MAY BE MOST APPARENT AT OR NEAR COLD ENGINE IDLE SPEEDS (APPROXIMATELY 1200 RPM). NOISE DURATION IS LESS THAN 10 MINUTES AFTER STARTUP AND WILL BE ELIMINATED WITH FEAD BELT REMOVED.
1. Replace the nylon FEAD idler pulley, refer to Workshop Manual, Section 303-05.
Parts Block
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.
OPERATION DESCRIPTION TIME
090907A 2007-2008 F-150/Mark LT 0.3 Hr.
4.6L/5.4L: Replace FEAD
Idler Pulley Includes Time
To Remove And Install
Serpentine Belt (Do Not
Use With 8678A, 8620F)
090907A 2007-2008 0.4 Hr.
Expedition/Navigator:
Replace FEAD Idler Pulley
Includes Time To Remove
And Install Serpentine Belt
(Do Not Use With 8678A,
8620F)
090907A 2007-2008 0.4 Hr.
Explorer/Mountaineer/
Sport Trac 4.6L: Replace
FEAD Idler Pulley Includes
Time To Remove And
Install Serpentine Belt (Do
Not Use With 8678A,
8620F)
090907A 2007-2008 Mustang 4.6L: 0.3 Hr.
Replace FEAD Idler Pulley
Includes Time To Remove
And Install Serpentine Belt
(Do Not Use With 8678A,
8620F)
DEALER CODING
CONDITION
BASIC PART NO. CODE
6C348 42
Thread Starter
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Member
Joined: Apr 2009
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From: Louisville ky
That is the EXACT noise mine was making. But mine was only during 1800-2200 rpms. I have reposted the post by 2Stroked (below)which helped me figure out what was going on with my truck, I hope this helps someone else too.
Posted by 2Stroked
I think if you read back through this thread you're going to find that there's a number of different "whistles" folks are talking about. I believe there's at least two main types here: 1) A noise when the vehicle is cold - regardless of engine RPM - and it goes away when the vehicle warms up, and 2) a noise only right around 1,800 RPM when it's cold - that never goes away unless you change the engine speed. Warming the vehicle up has absolutley no effect on this one.
Here's the important part. The TSB just posted up does not deal with the second condition. I'd seen this TSB a while ago and actually purchased the part - along with a new alternator. (I had condition #2.) We put the alternator in first and it solved the whole problem. I took the other part back. So, before you run out and do something silly
Posted by 2Stroked
I think if you read back through this thread you're going to find that there's a number of different "whistles" folks are talking about. I believe there's at least two main types here: 1) A noise when the vehicle is cold - regardless of engine RPM - and it goes away when the vehicle warms up, and 2) a noise only right around 1,800 RPM when it's cold - that never goes away unless you change the engine speed. Warming the vehicle up has absolutley no effect on this one.
Here's the important part. The TSB just posted up does not deal with the second condition. I'd seen this TSB a while ago and actually purchased the part - along with a new alternator. (I had condition #2.) We put the alternator in first and it solved the whole problem. I took the other part back. So, before you run out and do something silly
That is the EXACT noise mine was making. But mine was only during 1800-2200 rpms. I have reposted the post by 2Stroked (below)which helped me figure out what was going on with my truck, I hope this helps someone else too.
Posted by 2Stroked
I think if you read back through this thread you're going to find that there's a number of different "whistles" folks are talking about. I believe there's at least two main types here: 1) A noise when the vehicle is cold - regardless of engine RPM - and it goes away when the vehicle warms up, and 2) a noise only right around 1,800 RPM when it's cold - that never goes away unless you change the engine speed. Warming the vehicle up has absolutley no effect on this one.
Here's the important part. The TSB just posted up does not deal with the second condition. I'd seen this TSB a while ago and actually purchased the part - along with a new alternator. (I had condition #2.) We put the alternator in first and it solved the whole problem. I took the other part back. So, before you run out and do something silly
Posted by 2Stroked
I think if you read back through this thread you're going to find that there's a number of different "whistles" folks are talking about. I believe there's at least two main types here: 1) A noise when the vehicle is cold - regardless of engine RPM - and it goes away when the vehicle warms up, and 2) a noise only right around 1,800 RPM when it's cold - that never goes away unless you change the engine speed. Warming the vehicle up has absolutley no effect on this one.
Here's the important part. The TSB just posted up does not deal with the second condition. I'd seen this TSB a while ago and actually purchased the part - along with a new alternator. (I had condition #2.) We put the alternator in first and it solved the whole problem. I took the other part back. So, before you run out and do something silly
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Joined: Apr 2009
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From: Louisville ky
For what I can tell the alternator seems to be a problem only on the 04-06 F150's. I got a used alternator that came from a 08 and everything is fine. I found my alternator on www.car-part.com. I think you will be fine if you make sure they pull it from a 07-08. As for your question I paid 35 dollars plus 10 to ship it, and autozone wanted 199 plus core for a reman