what is it
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what is it
This is a 1997 351w motor and i was wondering if someone knew what this was without taking a pic of it,if you stand in front of the truck it would be on the left side of the coil,and it has a few electrical wires and two vacum lines going into it.it also has a round cap at the top and it turns but not sure if it comes off, but what is it and what does it do.Thanks
Cargo Master
Joined: Oct 2008
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From: Elyria, OH
If it's in front of the coil, is the EGR vacuum regulator (EVR) if, on the left side, its either the TAB/TAD solenoids that control air for the air injection system. But I'm pretty sure you are talking about the EVR
Fleet Owner
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From: Kentucky
For reference: Fuel Injection Technical Library » EGR Vacuum Regulator (EVR)
Another shot here:
Cargo Master
Joined: Oct 2008
Posts: 2,308
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From: Elyria, OH
Check the EGR valve to make sure it opens and closes. Ay idle, apply vacuum to the port, the truck should stall, or just about. If that checks out, then check to see if the vac line has vacuum at idle. If it does, its probably bad, if not the valve may be stuck partially open
Fleet Owner
Joined: Oct 2005
Posts: 20,786
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From: Kentucky
Check the EGR valve to make sure it opens and closes. Ay idle, apply vacuum to the port, the truck should stall, or just about. If that checks out, then check to see if the vac line has vacuum at idle. If it does, its probably bad, if not the valve may be stuck partially open
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Cargo Master
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From: Elyria, OH
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