I just bought an 05 387 when I use the engine brake it vibrates the entire truck and doesn't seem to be working at its full potiental
387 engine brake
Discussion in 'Peterbilt Forum' started by Peterbiltmike, Jan 8, 2012.
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hemi, or V-8 ......?
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Neither it's an ISX Cummins
123456 Thanks this. -
If it's vibrating, possibly one of the cam solenoids is bad. Time to go to the shop!
Does it make any difference changing the stages?Peterbiltmike Thanks this. -
No it does not change anything
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if changing the stages does not make a difference, it might be time to look at engine mounts too, or it could be in the cylinders that come on at the lowest setting, and are also on at all the higher ones too.
Peterbiltmike Thanks this.
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