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24 Valve 2nd Gen Dodge Cummins 98.5-02 Discussion of 24 Valve 5.9 Liter Dodge Cummins Diesels with VP44 Injection Pumps
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code 1690?

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Old 04-28-2010, 08:45 AM
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Default code 1690?
What is the code 1690?
 
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Old 04-28-2010, 07:55 PM
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P1690, Fuel Injection pump CKP Sensor does not agree with ECM CKP sensor.What lift pump you have?
 
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Old 04-29-2010, 08:33 AM
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fass ddrp pump.
 
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Old 04-29-2010, 10:31 AM
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What is the fuel pressure?
 
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Old 04-29-2010, 04:00 PM
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20 psi at idle 16 driving normal never get fuel psi under 10 psi.
 
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