i just bought an egr solinoid from gm my car new had one somone took it off forst off the wire connector did not fit right(grooves didnt line up) but i got it to snap together but it has 3 vacume ports all the vacume diagrams only show 2 port whats going on

 

What year, model, make of car, and wat engine do you have? My solenoid on my LG4 "appears" to have three ports, but the one by itself on the back is a vent. The electrical connector should only fit one way, if it doesn't snap right in it may not be the right one.

Mark

 

it a 85 trans am tpi

 

nice avatar wiggy lol

 

2Turbo,

One of the ports is an atmospheric vent, to allow the EGR valve to return to the closed position and vent the vacuum when the solenoid shuts off. The original installation should have had a small cube of foam as a "filter" on this third (vent) port.

 

thanks for all the info youve been alot of help my car was pretty riged when i got it

 

Thanks! It pretty much sums up alot of my days.

Mark

 

i sold my car since this