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 |
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 |