weird stumbling, found fix, new issue

[ryf]

ok my truck last fall blew out the exhaust tube that connects to the intake. I took it to a shop and they corked the exhaust and left the steel tube hanging... never had ANY trouble until now the car horn shaped vacuum valve thing is opening (I think it draw hot air into the intake in cold weather) and causing a loud whistle and stumbling, so I disconnected the vacuum line and it runs right, but it gets a CEL. if I hook the vacuum line back up, it goes back to stumbling...

any ideas??? can I bolt a delete plate over it and remove it entirely? (I don't really care about the CEL unless someone knows how to make it go away without buying new manifolds and replacing this system) I'll try and take some pics of it. its a 94 xlt 4x4

 

[ryf]

heres a pic to help

#1 is a horn shaped vacuum valve
#2 is a sensor connected to the tube by rubber hose

the horizontal line is the hose thats no longer connected.

 

[monkeydude3]

so that is what I would presume is the egr tube? Mine blew that too (1994 XL) and I just bit the bullet, went to ford and got a new one. It's $100 though but my parents wanted me to keep it running right for emissions...

The nut that holds it to the exhaust manifold I just got off with a nut splitter... You don't really want to bypass any of this stuff because what happened to me when mine went is when the CEL light was on it got really bad mpg. like 9-10mpg...

The tube is pretty easy to repalce once you get the old one off, may as well buy a new EGR valve while you are at it (my valve was fused to the tube)


If you really wanted you probably could take a piece of sheet metal , and cut it to the shape of the EGR valve mount and pop two small holes on each end and bolt it over that port... considering the early versions of the 4.0 didn't have an EGR... A computer tuner is probably the best bet for the CEL because sometimes they can make it ignore certain components... or a piece of black tape always works too

George

 

[monkeydude3]

the stumbling is going to be it running lean from pulling in all that cold straight up air