Squealing Noise from the Engine?
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From: In our Coach
Squealing Noise from the Engine?
I own a 2008, Ford F450 with the 6.4 liter diesel engine. I have125,000 miles on my truck. Recently I have been hearing a squealing sound coming from the engine. The sound can be heard after going downhill using engine braking, foot off the throttle, and then just as I apply the throttle the squealing sound comes on. If I let off the throttle the squeal gets less, if I apply more throttle the noise gets louder. After about five seconds the noise goes away. Everything works just fine. I do not notice any performance or driving issues at all. It is just a squealing noise.
I noticed a slight oil leak around the front crankshaft sealand a discoloration of the drive belt for the air-conditioning compressor. I went to a Ford dealership in Raleigh, NC and they diagnosed the leak as the crankshaft seal and that the oil was getting on the AC drive belt causing the squeal. I had them replace the leaking seal. I also had them replace both of the belts and one of the belt tensioners. The total cost was $965.
It seems that the oil leak has stopped but the squeal has not. Has anyone out there experienced a similar noise and if so what was the fix? Thanks for your help!
I noticed a slight oil leak around the front crankshaft sealand a discoloration of the drive belt for the air-conditioning compressor. I went to a Ford dealership in Raleigh, NC and they diagnosed the leak as the crankshaft seal and that the oil was getting on the AC drive belt causing the squeal. I had them replace the leaking seal. I also had them replace both of the belts and one of the belt tensioners. The total cost was $965.
It seems that the oil leak has stopped but the squeal has not. Has anyone out there experienced a similar noise and if so what was the fix? Thanks for your help!
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I have the same truck you and had that squeal just as you are describing. I changed the belts and removed the ac belt and squeal still present. Ford could not figure it out. So I took it to power stroke help and they diagnoised it as a exhaust leak. After they removed the cab three of the exhaust header bolts were missing the head of the bolt. They replaced the bolts and gasket....squeal gone.
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Joined: Jul 2013
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I have the same truck you and had that squeal just as you are describing. I changed the belts and removed the ac belt and squeal still present. Ford could not figure it out. So I took it to power stroke help and they diagnoised it as a exhaust leak. After they removed the cab three of the exhaust header bolts were missing the head of the bolt. They replaced the bolts and gasket....squeal gone.
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New User
Joined: Nov 2008
Posts: 4
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From: In our Coach
I have the same truck you and had that squeal just as you are describing. I changed the belts and removed the ac belt and squeal still present. Ford could not figure it out. So I took it to power stroke help and they diagnoised it as a exhaust leak. After they removed the cab three of the exhaust header bolts were missing the head of the bolt. They replaced the bolts and gasket....squeal gone.
Do you remember what it cost to do all that work?
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