I am looking for help identifying the part below. Its on the passenger of my 1991 5.7 L engine. I thought it was the evap purge valve solenoid, but I’m unable to find a part that looks like it with a dual plug and 3 hoses, though one looks like it is capoed iff. Its making a loud humming noise after about 10 minutes of driving. Any help is appreciated




I looking for assistance identifying this part and hopefully a replacement because it has loud humming noise. I have a 1991 350 5.7l tpi engine and its mounted on passenger side. It has 3 hoses but one looks like it is capped off. I thought it was the evap purge valve solenoid but I cannot find one that has dual
plugs. Any help is appreciated

 

no need for multiple posts on same thing

 

Thank you for the help. Sorry for the second post, my browser abruptly closed I didn’t think the first one went through

 

Merged to this forum.

That's the Air Injection Reaction divert/port valve assembly.

The humming could be one of the AIR check valves at the exhaust manifolds leaking back.