DD15 Troubleshooting

Section 10.9 High Altitude Operation

Section 10.9
High Altitude Operation

The engine will reduce horsepower as a function of altitude to protect critical engine components. Power reduction starts at approximately 8700 ft on power ratings greater than 500 hp. Altitude is determined by barometric pressure. A faulty barometric pressure sensor could start a premature power reduction. Check the sensor.‪

Baro (kPa)‪

Altitude (Ft)‪

Altitude (M)‪

100.01‪

0‪

0‪

99.4‪

200‪

61‪

98.7‪

400‪

121‪

98.0‪

600‪

182‪

97.4‪

800‪

242‪

96.7‪

1000‪

303‪

96.1‪

1200‪

364‪

95.4‪

1400‪

424‪

94.8‪

1600‪

485‪

94.2‪

1800‪

545‪

93.5‪

2000‪

606‪

92.9‪

2200‪

667‪

92.3‪

2400‪

727‪

91.6‪

2600‪

788‪

91.0‪

2800‪

848‪

90.4‪

3000‪

909‪

89.8‪

3200‪

970‪

89.1‪

3400‪

1030‪

88.5‪

3600‪

1091‪

87.9‪

3800‪

1152‪

87.3‪

4000‪

1212‪

86.7‪

4200‪

1273‪

86.1‪

4400‪

1333‪

85.5‪

4600‪

1394‪

84.9‪

4800‪

1455‪

84.3‪

5000‪

1515‪

83.7‪

5200‪

1576‪

83.1‪

5400‪

1636‪

82.5‪

5600‪

1697‪

81.9‪

5800‪

1758‪

81.3‪

6000‪

1818‪

80.7‪

6200‪

1879‪

80.1‪

6400‪

1939‪

79.5‪

6600‪

2000‪

79.0‪

6800‪

2061‪

78.4‪

7000‪

2121‪

77.8‪

7200‪

2182‪

77.2‪

7400‪

2242‪

76.7‪

7600‪

2303‪

76.1‪

7800‪

2364‪

75.5‪

8000‪

2424‪

75.0‪

8200‪

2485‪

74.4‪

8400‪

2545‪

73.8‪

8600‪

2606‪

73.3‪

8800‪

2667‪

72.7‪

9000‪

2727‪

72.2‪

9200‪

2788‪

71.6‪

9400‪

2848‪

71.1‪

9600‪

2909‪

70.6‪

9800‪

2970‪

70.0‪

10000‪

3030‪

69.5‪

10200‪

3091‪

68.9‪

10400‪

3152‪

68.4‪

10600‪

3212‪

67.9‪

10800‪

3273‪

67.3‪

11000‪

3333‪

66.8‪

11200‪

3394‪

66.3‪

11400‪

3455‪

65.8‪

11600‪

3515‪

65.2‪

11800‪

3576‪

64.7‪

12000‪

3636‪

64.2‪

12200‪

3697‪

63.7‪

12400‪

3758‪

63.2‪

12600‪

3818‪

62.7‪

12800‪

3879‪

62.2‪

13000‪

3939‪

61.7‪

13200‪

4000‪

61.2‪

13400‪

4061‪

60.7‪

13600‪

4121‪

60.2‪

13800‪

4182‪

59.7‪

14000‪

4242‪

59.2‪

14200‪

4303‪

58.7‪

14400‪

4364‪

58.2‪

14600‪

4424‪

57.7‪

14800‪

4485‪

57.3‪

15000‪

4545‪

56.8‪

15200‪

4606‪

56.3‪

15400‪

4667‪

55.8‪

15600‪

4727‪

55.4‪

15800‪

4788‪

54.9‪

16000‪

4848‪

Table 1. Barometric Pressure

If your vehicle is operating above sea level, a loss of power will be encountered, no further troubleshooting is required.‪

If your vehicle is operating at or below sea level and there is a lack of power, refer to "10.10 Power Verification With Chassis Dynamometer" .‪


EPA07 DD15 Troubleshooting Guide - DDC-SVC-MAN-0029
Generated on 10-13-2008

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