2011 5.0 engine knock
#1
#2
My brother just went through this. Ford replaced his block because of worn rings and scared cylinder walls. I think it was more his fault though. He always reved the engine as soon as he started the truck and didn't give enough time for oil to circulate. Worst one was driver side farthest back.
#5
I've also researched the knock with the 5.0L motor since I was worried at first about it, but everything online points to a characteristic of the coyote motor, very common on the Mustang forums. In other words it should only be of concern if it continues the knock after the truck is fully warm, which neither you're truck or mine does.
#6
Originally Posted by jrank;12481657[B
]it happens when the engine is cold or at operating temp.[/B]
maybe you didn't read what i read but i think its doing it even when hot
#7
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#8
#9
I just bout a 2012 f150 with the 5.0. I got what sounds like a knock coming from the bottum end too. Mine does it hot or cold but only at idle or just off idle. Trucks got 3500 mi. on it now. It almost sounds like it could be small back fires in the exaust manifolds. I don't know but it bugs the ***** out of me.
#10
I found this wright up, it may help.
ISSUE:
Some 2011 F-150 vehicles equipped with a 5.0L engine and air conditioning (A/C) compressor stretchy belt configuration built on or before 2/14/2011 may exhibit a light lower end engine knock most noticeable when engine temperature is warm and the vehicle is at idle.
ACTION:
Refer to the Service Procedure to correct the condition.
SERVICE PROCEDURE
Remove the front end accessory drive (FEAD) and A/C compressor stretchy belt. Refer to Workshop Manual (WSM), Section 303-05 Removal and Installation Air Conditioning (A/C) compressor belt - 3.5L GTDI, 3.7L, 5.0L. Does the knocking noise remain?
Yes, the knocking noise remains after removing the A/C stretchy belt. Do not continue with this article. Refer to WSM, Section 303-00 for further diagnosis
No, the noise is no longer present. Obtain the Drive Belt Kit proceed to Step 2.
Remove the FEAD belt tensioner and bolt from the engine front cover. Refer to WSM, Section 303-05 - Exploded view.
Remove and discard existing A/C compressor to condenser discharge line and install new A/C compressor to condenser discharge line supplied in the Drive Belt Kit. Refer to WSM, Section 412-01.
Using a 8 X 1.25mm tap, clean the mounting locations noted on the engine front cover and use compressed shop air to clean any remaining debris. (Figure 1)
Figure 1 - Article 11-7-1
Install A/C compressor drive belt idler pulley and A/C compressor drive belt idler pulley bolt supplied in the drive belt kit onto the engine front cover top mounting location. Tighten to 25 N-m (18 lb-ft).
Install A/C drive compressor belt tensioner supplied in the drive belt kit onto the engine front cover lower mounting location. Tighten to 25 N-m 18 lb-ft).
Install new A/C compressor belt supplied in the drive belt kit. Refer to WSM, Section 303-05 R and A/C compressor belt - 3.5L GTDI, 3.7L, 5.0L referring to the 5.0L (4V) late build vehicles procedure for proper belt routing. (Figure 2)
Figure 2 - Article 11-7-1
Reinstall the FEAD belt tensioner and bolt onto the engine front cover. Tighten to 25 N-m(18 lb-ft). Refer to WSM, Section 303-05 FEAD - Exploded view 5.0L (4V) late build vehicles.
Reinstall the FEAD belt. Refer to WSM, Section 303-05 FEAD - Exploded view 5.0L (4V) late build vehicles.
Install Integrated Diagnostic System (IDS) and identify the vehicle. Answer the IDS screen prompts according to the current vehicle A/C belt configuration.
Reprogram the Powertrain Control Module (PCM) using IDS release 72.03 or later. This new calibration is not included in the VCM 2011.3 DVD. Calibration files may also be obtained at www.motorcraft.com.
Perform misfire monitor neutral profile correction. Select IDS toolbox icon, Powertrain, Service Functions, then Misfire Monitor Neutral Profile Correction.
NOTE: PLEASE ADVISE THE CUSTOMER THAT THIS VEHICLE IS EQUIPPED WITH AN ADAPTIVE TRANSMISSION SHIFT STRATEGY WHICH ALLOWS THE VEHICLE'S COMPUTER TO LEARN THE TRANSMISSION'S UNIQUE PARAMETERS AND IMPROVE SHIFT QUALITY. WHEN THE ADAPTIVE STRATEGY IS RESET, THE COMPUTER WILL BEGIN A RE-LEARNING PROCESS. THIS RE-LEARNING PROCESS MAY RESULT IN FIRMER THAN NORMAL UPSHIFTS AND DOWNSHIFTS FOR SEVERAL DAYS
ISSUE:
Some 2011 F-150 vehicles equipped with a 5.0L engine and air conditioning (A/C) compressor stretchy belt configuration built on or before 2/14/2011 may exhibit a light lower end engine knock most noticeable when engine temperature is warm and the vehicle is at idle.
ACTION:
Refer to the Service Procedure to correct the condition.
SERVICE PROCEDURE
Remove the front end accessory drive (FEAD) and A/C compressor stretchy belt. Refer to Workshop Manual (WSM), Section 303-05 Removal and Installation Air Conditioning (A/C) compressor belt - 3.5L GTDI, 3.7L, 5.0L. Does the knocking noise remain?
Yes, the knocking noise remains after removing the A/C stretchy belt. Do not continue with this article. Refer to WSM, Section 303-00 for further diagnosis
No, the noise is no longer present. Obtain the Drive Belt Kit proceed to Step 2.
Remove the FEAD belt tensioner and bolt from the engine front cover. Refer to WSM, Section 303-05 - Exploded view.
Remove and discard existing A/C compressor to condenser discharge line and install new A/C compressor to condenser discharge line supplied in the Drive Belt Kit. Refer to WSM, Section 412-01.
Using a 8 X 1.25mm tap, clean the mounting locations noted on the engine front cover and use compressed shop air to clean any remaining debris. (Figure 1)
Figure 1 - Article 11-7-1
Install A/C compressor drive belt idler pulley and A/C compressor drive belt idler pulley bolt supplied in the drive belt kit onto the engine front cover top mounting location. Tighten to 25 N-m (18 lb-ft).
Install A/C drive compressor belt tensioner supplied in the drive belt kit onto the engine front cover lower mounting location. Tighten to 25 N-m 18 lb-ft).
Install new A/C compressor belt supplied in the drive belt kit. Refer to WSM, Section 303-05 R and A/C compressor belt - 3.5L GTDI, 3.7L, 5.0L referring to the 5.0L (4V) late build vehicles procedure for proper belt routing. (Figure 2)
Figure 2 - Article 11-7-1
Reinstall the FEAD belt tensioner and bolt onto the engine front cover. Tighten to 25 N-m(18 lb-ft). Refer to WSM, Section 303-05 FEAD - Exploded view 5.0L (4V) late build vehicles.
Reinstall the FEAD belt. Refer to WSM, Section 303-05 FEAD - Exploded view 5.0L (4V) late build vehicles.
Install Integrated Diagnostic System (IDS) and identify the vehicle. Answer the IDS screen prompts according to the current vehicle A/C belt configuration.
Reprogram the Powertrain Control Module (PCM) using IDS release 72.03 or later. This new calibration is not included in the VCM 2011.3 DVD. Calibration files may also be obtained at www.motorcraft.com.
Perform misfire monitor neutral profile correction. Select IDS toolbox icon, Powertrain, Service Functions, then Misfire Monitor Neutral Profile Correction.
NOTE: PLEASE ADVISE THE CUSTOMER THAT THIS VEHICLE IS EQUIPPED WITH AN ADAPTIVE TRANSMISSION SHIFT STRATEGY WHICH ALLOWS THE VEHICLE'S COMPUTER TO LEARN THE TRANSMISSION'S UNIQUE PARAMETERS AND IMPROVE SHIFT QUALITY. WHEN THE ADAPTIVE STRATEGY IS RESET, THE COMPUTER WILL BEGIN A RE-LEARNING PROCESS. THIS RE-LEARNING PROCESS MAY RESULT IN FIRMER THAN NORMAL UPSHIFTS AND DOWNSHIFTS FOR SEVERAL DAYS
#11
I just bout a 2012 f150 with the 5.0. I got what sounds like a knock coming from the bottum end too. Mine does it hot or cold but only at idle or just off idle. Trucks got 3500 mi. on it now. It almost sounds like it could be small back fires in the exaust manifolds. I don't know but it bugs the ***** out of me.
#13
I have an 11 with 33000 miles with the same noise. Don't really notice it cold but can hear it when hot. I have heard it since new and doesn't seem to get any worse so I'm not to worried about it. It's not anywhere near as loud as the 5.4's that started knocking when they were fairly new and the company that I work for still has 3 of them that are daily drivers each with over 200,000 miles of construction use (abuse)! I'm not to worried about the 5.0 tick.