What is it, and function?
Thread Starter
Intermediate
Joined: Aug 2008
Posts: 42
Likes: 0
What is it, and function?
This vacuum block with an electrical connection sits under the
intake plenum front on driver's side. Has four small vacuum line
connections. One turns and goes back to EGR valve, the one next
to it goes down to driver's side headlight area. The other two on
the other end were plugged off. Anybody tell me where they are
supposed to go to? Thanks, I also have the post "88 runs, but quits"
intake plenum front on driver's side. Has four small vacuum line
connections. One turns and goes back to EGR valve, the one next
to it goes down to driver's side headlight area. The other two on
the other end were plugged off. Anybody tell me where they are
supposed to go to? Thanks, I also have the post "88 runs, but quits"
Drifting
Joined: Dec 2012
Posts: 1,504
Likes: 73
From: Georgetown TX
I have an 89 and here is the info on my conections. I hope it is right
the line that I see on your picture goes back to the egr
the conection next to it goes to a y conection and then plugs into the bottom vacuum fiting on the throttle body This supplies metored vacuum to the egr and down to the fuel tank pressure control valve thru that y fitting i mentioned
there is another larger vacuum fiting on the side of the TB that connects to a solenoid for the charcoal cannister
there should also me an electrical plug, plugged into the solenoid in the picture
If I am wrong, someone on the forum will advise
Mike
the line that I see on your picture goes back to the egr
the conection next to it goes to a y conection and then plugs into the bottom vacuum fiting on the throttle body This supplies metored vacuum to the egr and down to the fuel tank pressure control valve thru that y fitting i mentioned
there is another larger vacuum fiting on the side of the TB that connects to a solenoid for the charcoal cannister
there should also me an electrical plug, plugged into the solenoid in the picture
If I am wrong, someone on the forum will advise
Mike
Race Director
Joined: Apr 2002
Posts: 10,036
Likes: 346
From: Anaheim CA
That is the vacuum solenoid for the EGR valve. The ECM turns it on and it supplies vacuum to the EGR valve to make it open.
These are the norma vacuum line connections:
These are the norma vacuum line connections:
Last edited by Cliff Harris; Aug 11, 2015 at 11:57 PM. Reason: Corrected spelling error.
Drifting
Joined: Mar 2013
Posts: 1,952
Likes: 239
From: Venice Cali.
This vacuum block with an electrical connection sits under the
intake plenum front on driver's side. Has four small vacuum line
connections. One turns and goes back to EGR valve, the one next
to it goes down to driver's side headlight area. The other two on
the other end were plugged off. Anybody tell me where they are
supposed to go to? Thanks, I also have the post "88 runs, but quits"
intake plenum front on driver's side. Has four small vacuum line
connections. One turns and goes back to EGR valve, the one next
to it goes down to driver's side headlight area. The other two on
the other end were plugged off. Anybody tell me where they are
supposed to go to? Thanks, I also have the post "88 runs, but quits"
