Whistling Noise????
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Whistling Noise????
Hey, I am new to the PSD so maybe this noise is suppose to be there. But when acclerating from a stop or pressing gas pedal when cruising I get a distict whistling noise in the cab. The only way I can describe it is like a tea kettle whistle. Whats funny is it happens under load, but I can also get it to happen when in park and revving the engine to higher rpm's. If anybody has experienced this, please advise me where to look or how I go about fixing this. It gets old after about 5 mins in the truck. Thanks.
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Hey, I am new to the PSD so maybe this noise is suppose to be there. But when acclerating from a stop or pressing gas pedal when cruising I get a distict whistling noise in the cab. The only way I can describe it is like a tea kettle whistle. Whats funny is it happens under load, but I can also get it to happen when in park and revving the engine to higher rpm's. If anybody has experienced this, please advise me where to look or how I go about fixing this. It gets old after about 5 mins in the truck. Thanks.
I'm hesitant to take it to a dealer and start asking questions. Who knows what else will get broken.
I've seen 40psi of boost sustained on a few occasions(uphill with a light trailer), with 30-32 being the usual max, so I don't think the turbo's are having issues.
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I also didn't hear the whistle in a different 6.4 I test drove, so it seems some have it, others don't. I often wonder if it has something to do with extra EGR gasses being fed through the system due to high load causing the whistle.
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I've never heard a tea kettle like whistle. Take it to the dealer. I'd describe the 6.4 as a strong hiss, especially during gear changes and throttle chops, but not the high pitched sound of a tea kettle.
Mike
Mike
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I am taking it to the dealer as soon as I get the chance. I called one of our local dealers and the service guy seemed to think it was normal. He also added that my truck might have been chipped or have an aftermarket exhaust causing it to whistle more than it would when stock. I am not aware of anything that has been done to the truck, so hopefully when I take it to them they can figure it out. Thanks for all the info.
Anthony
Anthony
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I am taking it to the dealer as soon as I get the chance. I called one of our local dealers and the service guy seemed to think it was normal. He also added that my truck might have been chipped or have an aftermarket exhaust causing it to whistle more than it would when stock. I am not aware of anything that has been done to the truck, so hopefully when I take it to them they can figure it out. Thanks for all the info.
Anthony
Anthony
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The 6.0's were known for a "tea pot whistle" coming from the coolant reservoir. Check above your reservoir (immediately in front of the driver in the engine compartment) and note if coolant is all over the underside of your hood. If this is the case, you'll need the dealer. My 6.0L would whistle above 20lb boost (particularly when taking my foot off the throttle), and coolant was spraying from the cap.
1. Could be the cap - simple fix
2. Could be the reservoir bottle cracked or imperfection on the mating surface with the cap- also a know failure
3. Could be pressure in the coolant system from a cracked EGR, or a leak in the head gasket (my situation). Dealer will need to do a relative pressure test to determine.
Good luck and keep us updated.
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The 6.0's were known for a "tea pot whistle" coming from the coolant reservoir. Check above your reservoir (immediately in front of the driver in the engine compartment) and note if coolant is all over the underside of your hood. If this is the case, you'll need the dealer. My 6.0L would whistle above 20lb boost (particularly when taking my foot off the throttle), and coolant was spraying from the cap.
1. Could be the cap - simple fix
2. Could be the reservoir bottle cracked or imperfection on the mating surface with the cap- also a know failure
3. Could be pressure in the coolant system from a cracked EGR, or a leak in the head gasket (my situation). Dealer will need to do a relative pressure test to determine.
Good luck and keep us updated.
1. Could be the cap - simple fix
2. Could be the reservoir bottle cracked or imperfection on the mating surface with the cap- also a know failure
3. Could be pressure in the coolant system from a cracked EGR, or a leak in the head gasket (my situation). Dealer will need to do a relative pressure test to determine.
Good luck and keep us updated.
If you were to just whistle a constant flat comfortable tone right now with your mouth, that's what mine sounds like at 20-max psi in fifth gear, but muffled from coming through the firewall. If it downshifts into a lower gear, the noise goes away. I may try and get an audio recording of it one of these days. I'm not sure if it will come out very well with the rest of the cab noise.
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Yes, I bought the truck used. It has 43,000 miles on it. It is the 6.4L, but mine whistles when you first take off. When the truck shift is gets a little less annoying but as soon as the rpm's pick back up it get really loud. In the lower gears before 20mph, it is so loud you cant hear the radio playing. If you stay off the gas, it goes away once you get into cruising speed, so I think it has something to do with the load on the motor. I am going to let the dealer take it a look at it as soon as I can, but I am trying to make sure it is not chipped first. I am in the process of trying to find the original owner and make sure the truck is still stock. Thanks for all the input and I will let you all know what I find out. Thanks.
Anthony
Anthony
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Yes, I bought the truck used. It has 43,000 miles on it. It is the 6.4L, but mine whistles when you first take off. When the truck shift is gets a little less annoying but as soon as the rpm's pick back up it get really loud. In the lower gears before 20mph, it is so loud you cant hear the radio playing. If you stay off the gas, it goes away once you get into cruising speed, so I think it has something to do with the load on the motor. I am going to let the dealer take it a look at it as soon as I can, but I am trying to make sure it is not chipped first. I am in the process of trying to find the original owner and make sure the truck is still stock. Thanks for all the input and I will let you all know what I find out. Thanks.
Anthony
Anthony
If it's making that much noise then yes a visit to the dealer is warranted. I don't think a chip would cause it to make that sound. Could it possibly be a loose hose on the post-turbo side of the intake system? With positive boost levels air would be escaping through the leak, with low to no boost levels (at low load) there would obviously be less pressure. There have been quite a few people that have had the connecting hoses blow off completely. What do your boost levels look like? 30+psi should be easy to hit.
Anyhow, let us know what the fix is.
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I am not sure about boost levels, but I have to have the truck tagged tomorrow so I will check it out and let you know. If I were to try to find the hoses that might be blown off where would I began to look? Are most of them along the firewall on the back side of the motor?
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Hey City Guy, I am having the exact same problem as you, buy mine only seems to happen when it's cold. The colder it gets the worst it gets. Mine does go away above about 40 degres or so, but living here in MD. it doesn't get that warm this time of year. I have an ac/heat issue with my truck also (heat on drivers side and a/c on passenger side). My truck is scheduled to go in the shop on wednesdaay the 14th. I'll let you know when I get it back. Greg