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  #1  
Old 09-08-2018, 01:58 PM
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my dodge ram 1500 5.9 magnum stalls at lights when rpm drops. indicating light says evap system is at fault p0455, p0442. help. the truck runs fine when moving but when throttle is not being added the rpm drop to low and it stalls out. this is an automatic and been getting high grade fuel.
 

Last edited by Pmillsap; 09-08-2018 at 02:11 PM.
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Old 09-08-2018, 02:04 PM
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Two separate issues.

When is the last time the throttle body was cleaned? The IAC well tends to get gunked up, and it just doesn't work the way it should.
 
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Old 09-08-2018, 02:14 PM
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never before have i cleaned or replace the IAC
 
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Old 09-08-2018, 03:16 PM
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Originally Posted by Pmillsap
never before have i cleaned or replace the IAC
Pull the throttle body and clean it especially when the iac passage is
 
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Old 09-08-2018, 05:37 PM
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pulled cleand and hole in line to or from the carbon filter box found and replace. one of the 2 fixed the problem for now. thanks guys.
 
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Old 09-08-2018, 05:41 PM
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Originally Posted by Pmillsap
pulled cleand and hole in line to or from the carbon filter box found and replace. one of the 2 fixed the problem for now. thanks guys.
No problem glad you got it fixed!
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