I'm in a 2020 389 pete it has the cx15 565 hp cumming and its a dog for some reason at 71mph its at 1500 rpm and it falls on its face .I have to run in 17th at 1700 rpm to get any kind of pulling perfomance..it also has very little throttle reponce..and very bad turbo lag ..some advice would greatly appreciated..
X-15 Cummins thread
Discussion in 'Peterbilt Forum' started by KB3MMX, Feb 26, 2018.
Page 32 of 44
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Dave_in_AZ Thanks this.
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Possible the speed may be limited to 71?
BigHossVolvo and Dave_in_AZ Thank this. -
Sounds like geardown protection?
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NWAF, Vampire, BigHossVolvo and 1 other person Thank this.
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BigHossVolvo, Dave_in_AZ and Vampire Thank this.
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The X15 series has had minimal issues thus far. Occasional random part failures but no pattern failures across the board since its release.NWAF, BigHossVolvo, Dave_in_AZ and 4 others Thank this. -
Dave_in_AZ and Goodysnap Thank this.
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One article on TruckTrend states that this engine is DOHC.
Weird because another article, also on TruckTrend, reveals that this engine is actually SOHC. -
With commonrail injection the CM2150 and newer engines are single cam. No need for cam with higher fuel pressure generated by the HP pump and electronic injection.daf105paccar, Accidental Trucker, Dave_in_AZ and 4 others Thank this. -
2020 389 with a 565 x15 with a reoccurring coolant leak on that line that runs in the passenger side frame rail. Can’t tell if it’s the metal section or the rubber sections or to where that line runs with out really getting under the truck. Any one know where it goes or which line is likely to be the culprit?
D.Tibbitt Thanks this.
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