1988 5.7 EGR Vacuum Lines

[Irish Wake]

Hi, I just bought an '87 K5 Blazer 5.7. It passed the smog test but it's missing the vacuum line off the EGR valve and also the lines that attach below the air cleaner snorkle. There's a selonoid there with 2 vacuum ports but no lines.

Can anyone help me figure out why they might be missing and how to replace them. The truck runs great and passed the smog test with no problems.

Also, the check engine light come on once in a while and resets as soon as you cycle the key.

Thanks
Randy

 

[Jason4x4]

the solenoid you are refering to is probably the egr solenoid, that goes to the egr and one to the tbi.

 

[Irish Wake]

Thanks Jason, Do you know of a diagram that shows where the hose hooks into the TBI. Should I reattach or leave it alone?

 

[SLOK5]

I could fax you a print out of the diagram from my all data program....it wont allow me to save it as a picture and no scanner here at work. Otherwise it would be tomorrow for me to help. Brian

 

[dyeager535]

Should hook to any constant vacuum source, as the solenoid (via an ECM signal) is what controls what/when vacuum actually gets to the EGR valve.