Ali sami Aydogan Posted January 17, 2021 Share Posted January 17, 2021 I have 1996 western star with 8ll trans,,it makes a weird sound between 50 mph and 55 mph speed, if I roll it to neutral it doesn't do it, is this a bad engine bearing or trans problem ? Quote Link to comment Share on other sites More sharing options...
mrgumby Posted January 18, 2021 Share Posted January 18, 2021 Is it kind of a rattling vibration sound when the transmission is not under load when your just at the right rpm with your speed Quote Link to comment Share on other sites More sharing options...
Ali sami Aydogan Posted January 18, 2021 Author Share Posted January 18, 2021 vibration and rattling is there as long as it's engaged, when it is not engaged everything is fine,,empty truck or loaded is the same. Quote Link to comment Share on other sites More sharing options...
Dirtymilkman Posted January 20, 2021 Share Posted January 20, 2021 Check ride height first. 1 1 Quote Link to comment Share on other sites More sharing options...
fjh Posted January 20, 2021 Share Posted January 20, 2021 Milkmans suggestion top of the heep! Heres other stuff to try Lock out the interaxle diff See if it changes! = Tires size! Equal ?! Rest your foot Foot on the clutch pedal Listen to see if the noise is still there looking for worn linkage! check the trans tail shaft for tightness ! Ujoints loose ? Rims Are they Steel Buds? = check for cracked rims! Lots of places to look! Last but not least chec the diff plugs see if there is metal in the oil If there is lost of metal on an plug magnet you may have a failing diff! Not uncommon to have crown gear bolts break! Just sayin! 1 Quote Link to comment Share on other sites More sharing options...
hatcity Posted January 20, 2021 Share Posted January 20, 2021 Carrier bearing, u joints, wheel bearings first two can be done easily with out a mess Quote Success is only a stones throw away.................................................................for a Palestinian Link to comment Share on other sites More sharing options...
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