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Old 08-08-2013, 07:47 AM
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motor sounds different.

I just got back from pulling my trailer (about 12000-12500lbs) from Louisiana to Oregon and back. Now the motor has a different tone to it. It runs fine and had all good gauge readings. No codes. Any idea what could make it change tone. It doesn't sound like an exhaust leak to me. It just sounds deeper. I have a banks power pack on it. Put on about 4 months ago or so. While driving I tried to keep the egt below 1000. It got to 1100 once on the trip but just for a short time till to downshifted. I heard 1050 was the highest it should be. There was one part of the trip where I had a head wind and was running in third doing about 65 and 2300-2500 rpm for about an hour. Then climbing over one of the mountains the Trans temp got to the yellow so I pulled over and let it cool. Then stayed at about 3/4 of the way to the yellow the rest of the hill climb. Any idea what may of caused it to sound different.
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Old 08-08-2013, 08:02 AM
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The truck is an 02
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Old 08-08-2013, 08:06 AM
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i think its just coincidental. If codes or running improperly, then i'd be a little worried. With that kind of weight strapped to it, i'd look into a 6.0 trans cooler or tru-cool..
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Old 08-08-2013, 09:38 AM
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Yeah, after it got that hot I started researching and found out about the 6.0 Trans cooler swap. I think that will be my next project.
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Old 08-08-2013, 09:46 AM
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One other thing it did. When I was going up a hill and had it in 3rd with my foot down a good way down on the gas it sounded like metal on metal scraping. When I let off the gas a little it went away. Would that of been the turbo possibly. Could it do that under large load.
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Old 08-09-2013, 12:21 PM
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yup. Remove the air intake assy ,and have a gander at the compressor wheel. Look for abnormal wear/chips in the blades. Also, grab ahold of it, and try to move it..side/side, up/down. If any, time for rebuild.
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