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Nunman

El Paso, TX

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Question Asked: 

I have a constant low vacuum at the EGR valve less than 5 Hg at idle, which it seems is enough to move the diaphragm in the ERG valve. I replaced the EGR solenoid, and I have voltage at the solenoid plug. However if I disconnect the Solenoid plug I still have vacuum at the EGR. I removed the EGR vacuum hose and plugged it, put a vacuum Gage in the system at the intake manifold I get about 17Hg. Reconnect the EGR vacuum line and it drops to about 15Hg. I am stumped


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Question Asked: 

I changed all the vacuum lines, changed the ERG, and solenoid pump. The truck stumbles once i put the vacuum line on the ERG valve(runs smooth with out the vacum line on the EGR vavle). Can anyone suggest a system to look at?


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Question Asked: 

Cleard the code but it still runs rough at idol, anything els to check?


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