Cascade Crew

fiveoformula · Posted: Thu Apr 17, 2008 10:43 pm Post subject: EGR BS

does anyone have TWO vacuum lines on there EGR valve?
the only ones i have been able too find have one...

Raiden · Member Joined: 10 Mar 2004 Posts: 193 Location: tacoma

My EGR has two vacume lines that run from a soleniod. One line goes to the egr, the second line runs under the throttle body.

fiveoformula · Posted: Fri Apr 18, 2008 11:42 am Post subject:

hmm sounds about like what i got.
i need to replace mine but no auto part store seems to even have it in a book

aaron_sK · Posted: Fri Apr 18, 2008 11:50 am Post subject:

Have you actually confirmed that both lines go to the EGR? I'm not as familier with TBI, but on my TPI one of the lines goes to the TB, and the other to the EGR.

fiveoformula · Posted: Fri Apr 18, 2008 11:57 am Post subject:

from what i can tell, theres one line at the top of the "saucer" part then on coming off the side of the base into another gold round saucer thing then that heads over to the solenoid...
this seems really because all the other TBI cars at U pull it have just the one vacuum line on the saucer...

chevymad · Posted: Fri Apr 18, 2008 4:29 pm Post subject:

The line underneath is actually a pressure line. When the EGR opens it feeds pressure to the valve its connected to, regulating flow. Can't say that i've seen one on a tbi motor. Is this car federal or california regulation? The emission label under the hood will tell you.

Al Hasse · Posted: Fri Apr 18, 2008 6:48 pm Post subject:

fiveoformula · Posted: Sun Apr 20, 2008 3:54 pm Post subject:

chevymad · Posted: Sun Apr 20, 2008 3:56 pm Post subject:

The emission label under the hood will either say "this vehicle conforms to federal emission standards" or it'll say federal and california.

fiveoformula · Posted: Sun Apr 20, 2008 4:06 pm Post subject:

"Conforms to all EPA regulations for 1988" no California

fiveoformula · Posted: Wed Apr 23, 2008 10:15 pm Post subject:

would anyone have an idea why the car would run so good with the main EGR vacuum line unplugged & capped off, yet run horrible when plugged in?

Twilightoptics · Posted: Wed Apr 23, 2008 10:18 pm Post subject:

ECM telling the EGR to open at the wrong time. Solenoid is bad allowing the EGR to be open all the time.... etc etc etc

fiveoformula · Posted: Wed Apr 23, 2008 10:21 pm Post subject:

right right... so that issue sounds more like the solenoid is bad rather than the valve being just stuck open?

fiveoformula · Posted: Fri Aug 01, 2008 1:40 pm Post subject:

So I managed to get the car thru emissions with the EGR bypassed.
It runs fine while its bypassed...

Id like to get it working properly again though, since I can push it open or closed i assume it isnt stuck...
is there a way i can test the solenoid?