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Rolin
Oregon
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Joined: 03/04/2009
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Chum lee,
Exhaust leak or something like that is an interesting idea. I think that normally an exhaust leak would sound when that cylinder exhausted and Change in frequency with RPM. The should didn't seem to change in frequency...just intensity. But it could be some other type of air leak, perhaps vacuum leak?
Does anyone know if you can lock the transmission in overdrive if you select 3rd gear? That would reduce fluid temps on a long hill.
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Grit dog
Black Diamond, WA
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Joined: 05/06/2013
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Rolin wrote:
Does anyone know if you can lock the transmission in overdrive if you select 3rd gear? That would reduce fluid temps on a long hill.
Your trans has 4 forward gears. 4th is OD. 3rd is direct/1:1.
3rd and higher rpm’s will run cooler all things equal.
2016 Ram 2500, MotorOps.ca EFIlive tuned, 5” turbo back, 6" lift on 37s
2017 Heartland Torque T29 - Sold.
Couple of Arctic Fox TCs - Sold
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30sweeds
Iowa
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Joined: 03/24/2018
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Grit dog wrote:Rolin wrote:
Does anyone know if you can lock the transmission in overdrive if you select 3rd gear? That would reduce fluid temps on a long hill.
Your trans has 4 forward gears. 4th is OD. 3rd is direct/1:1.
3rd and higher rpm’s will run cooler all things equal.
The trans kinda has 5 forward gears,1 2 3 OD and converter lock up.It normally shifts 1 2 3,lock,OD.If in the 3 position,converter will lock but not shift to OD.This is the least heat generating condition but will come out of lock on a hard pull.The converter then slips which causes heat build up...can be bad news on a super long grade.If it seems to struggle even in tow haul,manually down shift.Less engine effort = less heat.That noise problem could very well be a cat problem as previously mentioned.Happened to me. Loss of power,hissing type of sound,pull over,noise quits,runs ok again,maybe for days before it happens again.Ended being a chunk of whatever is in the cat lodged itself in the tail pipe at speed,fell away at low rpm and apparently stayed there till who knows when.Might be worth looking into if you can't figure it out.
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