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CATEGORY LISTINGS > CATERPILLAR > C7 Cat has 24psi manifold pressure scanner shows 31.9psi [ REFRESH ]
Thread Title:

C7 Cat has 24psi manifold pressure scanner shows 31.9psi


Created On Friday February 10, 2023 13:28 Diesel Talk
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truckdoctor
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Posts: 33
Joined: Jun 2012

Note Friday February 10, 2023 13:28 View thread in raw text format
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C7 Cat engine #KAL59410 in a 2005 Sterling has 24psi at manifold and at wastegate actuator wastegate works good has a new boost sensor atmospheric pressure sensor new smart wastegate solenoid under load it derates has code 102-7 mechanical system not responding but is is working properly the boost is monitored by mechanical gauges 24psi under load scanner shows 31.9psi the boost sensor signal wire is good load tested reference voltage is 6.53volts seems high any ideas why scanner is reading 31.9psi when it really is 24psi throwing code and derating other wires test ok on sensor harness any other info let me know what you need thanks.
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CATEGORY LISTINGS > CATERPILLAR [ REFRESH ]
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