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Author
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Topic: 5.0 Mustang PCV valve
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j0eyabs
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Member # 1026
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posted
 
 
I wanted to know if anyone can tell me exactly where the pcv valve is on a 90 5.0, also when the pcv valve is removed how do you take out the spark arestor
Posts: 767 | From: California | Registered: Mar 2002
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j0eyabs
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Member # 1026
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posted
t
Posts: 767 | From: California | Registered: Mar 2002
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JoeT
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Member # 298
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posted
the spark arrestor comes out by hand. Find the absolute rear, center of the upper intake, basically it's "in" the lower intake, at the far rear of it. Note the air-tube (a vacuum line) that goes to the upper intake. The PCV valve is "inline" in this airtube and pops in/out just with friction by hand.
spark arrestor sits all the way to the bottom. it's a mesh, and then the pcv valve sits on top of it.
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1984 Ford Tempo AOD--- RIP
Posts: 6785 | From: San Jose | Registered: Jun 2001
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BIGJUNE
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Member # 1716
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posted
the pcv valve is located in the back near the fire wall under the upper intake. its plugged to the lower intake on a grommet.good luck
Posts: 110 | From: los banos | Registered: Aug 2002
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j0eyabs
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Member # 1026
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posted
ok i located the pcv valve and pulled it, not the spark arrestor looks like its clogged, what can having a clogged aresto do to car performance, and i tried sticking my finger in the hole to take it out and i cant, how would i remove it.
Posts: 767 | From: California | Registered: Mar 2002
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Stimson
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Member # 51
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posted
Are you talking about the wire mesh under the PVC valve? Find a long skinney screw. Screw it into the wire mesh and use a pair of pliers to pull the screw and wire mesh out. You can try cleaning it with carb cleaner, but if its hopeless, the Ford dealership sells new ones.
Posts: 2373 | Registered: Jun 2000
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j0eyabs
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Member # 1026
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posted
ok ill do that ill just buy a new one from ford, the part that sucks is that ill have to remove the upper intake cause theres hardly any room for me to reach down there. oh well
Posts: 767 | From: California | Registered: Mar 2002
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Stimson
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Member # 51
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I've never heard of anyone removing the upper intake to do anything PVC related. Sit up on the fender and you'll be fine.
Posts: 2373 | Registered: Jun 2000
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j0eyabs
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Member # 1026
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posted
ok ill try it but i had a really hard time getting my had down the hole where the spark arestor was, but i was thinking of replacing my valve cover gaskets so i might as well do it
Posts: 767 | From: California | Registered: Mar 2002
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biggmatt
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Member # 1124
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posted
typical mustang ![[BS flag]](graemlins/bs_flag.gif)
Posts: 392 | From: pittsburg | Registered: Apr 2002
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street_illegal_stang
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Member # 1554
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posted
yeah,
what does that do to the 5.0s performance???
Posts: 1276 | From: Long Beach C.A | Registered: Jul 2002
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Stimson
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Member # 51
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posted
quote:
Originally posted by street_illegal_stang:
yeah,
what does that do to the 5.0s performance???
A pluged up PVC valve will cause extra crank case pressure to build up. You can blow out gaskets this way (valve cover gaskets, ect)
Posts: 2373 | Registered: Jun 2000
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