exhaust gas recirculation vac control solenoid 87 V6 HELP!

Thread view:

Enable EMail Alerts

Start New Thread

Thread rating:

Olorin - 20 Mar 2005 04:20 GMT

Ok i was replacing my timing chain and gears this weekend and had a
bit of a problem putting it back to gether. On the EGR solenoid, out
of the side facing the front of the car there is a single vacuum line
running to somewhere. It fell off or broke off from the other end and
i cannot find where it goes to. I have looked in 2 diferent repair
manuals and neither state what that vacuum line is attached to on the
other end. One book had a vacuum line diagram but it just had a loose
hose with no notation as to where it would go.

Is it just a loose hose that is there to take in oxygen form beside
the motor or does it attach to something on the car?

Thanks for any info.

Olo

Reply to this Message

R W Hughes - 20 Mar 2005 05:58 GMT

it attaches to the small tube on the firewall. The other end of this
tube attaches to the dirty (inside) side of the air cleaner at the base.

> Ok i was replacing my timing chain and gears this weekend and had a
> bit of a problem putting it back to gether. On the EGR solenoid, out
[quoted text clipped - 11 lines]
>
> Olo

Signature

Robert W. Hughes (Bob)
BackYard Engineering
29:40.237N, 95:28.726W or perhaps 30:55.265N, 95:20.590W
Houston, Texas "The city with too much Oxygen"
rwhughe@oplink.net

Reply to this Message

Olorin - 20 Mar 2005 17:41 GMT

"rwhughe" wrote:

> it attaches to the small tube on the firewall. The other end
> of this
[quoted text clipped - 24 lines]
> >
> > Olo

thank you so much...was goning nuts looking for it.

Reply to this Message

JazzMan - 20 Mar 2005 17:18 GMT

> Ok i was replacing my timing chain and gears this weekend and had a
> bit of a problem putting it back to gether. On the EGR solenoid, out
[quoted text clipped - 9 lines]
>
> Thanks for any info.

The EGR solenoid works by bleeding air into the EGR vacuum
line to break the vacuum at the valve so it will close. That
bleed air has to come from somewhere, and GM decided that it
was better to bring it from the relatively cool air in the
air cleaner inlet than from the hot, dusty air in the engine
compartment right above the exhaust. So, there's a rubber
hose (not a vacuum line) that connects to a steel tube on
the forward firewall that in turn connects to the bottom of
the air cleaner housing with another length of rubber hose.

BTW, while you're in there that small tube is attached to
a large metal tube that should connect on the driver's side
end to the air cleaner housing with a large rubber hose, and
the other end of that tube stops about the middle of the
firewall. That end of the tube should be capped with a rubber
cap, that was done as part of the recall. Since that large
tube connects to the clean side of the air filter, if that
rubber cap is missing the engine will be pulling in dirty,
gritty air. Not good. That cap is commonly missing or was
never installed in the first place when the recall was done
that left the end of the tube disconnected from the engine.

JazzMan

Signature

**********************************************************
Please reply to jsavage"at"airmail.net.
Curse those darned bulk e-mailers!
**********************************************************
"Rats and roaches live by competition under the laws of
supply and demand. It is the privilege of human beings to
live under the laws of justice and mercy." - Wendell Berry
**********************************************************

Reply to this Message