98 PCV valve help
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From: Central Florida
98 PCV valve help
OK, I know where the PCV valve on my 98 4.2 is, but what is the trick to replacing it?
I just don't see a way short of pulling the engine to replace it.
Any ideas? There must be some trick to it.
Before someone asks, I'm having rough idle and have a check engine light on. I haven't put a code reader on it yet, just strating with the logical stuff. Did plugs and wires. Yes, used Ford parts.
Thanks for any hints.
Louis
I just don't see a way short of pulling the engine to replace it.
Any ideas? There must be some trick to it.
Before someone asks, I'm having rough idle and have a check engine light on. I haven't put a code reader on it yet, just strating with the logical stuff. Did plugs and wires. Yes, used Ford parts.
Thanks for any hints.
Louis
Cargo Master
Joined: Aug 2002
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From: Cajun Country
I would use a car ramp or a block to stand on so you have more of a reach to it. My first time to replace mine,I pulled the whole tube with the pcv valve and cleaned it out. What a PITA to re-route it back! 
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Senior User
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From: Central Florida
Thanks. Out of curiosity, where would I find the other end of the tube?
Sorry for the dumb questions. I just can't see anything back there. I replaced a lot of PCV's in my life, but I can't say I've ever seen one that was such a challege.
I appreciate all the good info around here.
Louis
Sorry for the dumb questions. I just can't see anything back there. I replaced a lot of PCV's in my life, but I can't say I've ever seen one that was such a challege.
I appreciate all the good info around here.
Louis
Senior User
Joined: Dec 2003
Posts: 383
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From: Mililani, Hawaii
I did mine on a 97 and basically had to feel the whole thing cause i could not really see anything....I just yanked it out...neccessity will force you to get it back on...lol. Its not as bad as it looks.
As far as dumb questions goes...no one can compete with me...so back off...thats my arena...lol
good luck gettin it replaced
As far as dumb questions goes...no one can compete with me...so back off...thats my arena...lol
good luck gettin it replaced
Cargo Master
Joined: Aug 2002
Posts: 2,013
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From: Cajun Country
Look under the throttle body and you will see a small rubber boot with a plastic line going into it.This is the opposite end of where it comes from the PCV valve. On the PCV valve there is a small piece of rubber hose between the valve and the plastic tube. I replaced that rubber hose also. And,check the rubber boot for any cracks in it.
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From: Central Florida
Thanks all!
I particularly appreciated the "necessity will force you to get it back in part." That's sort of what I was afraid of and why I didn't yank really hard after I had it out of the valve cover.
I think I may try the pullig the whole line bit by removing at the opposite end. While routing it back may be a pain, it may be safer than replacing it blind as if there is a problem with the line or the rubber hose, I would have no way of knowing.
Can't wait!
Thanks again!
Louis
I particularly appreciated the "necessity will force you to get it back in part." That's sort of what I was afraid of and why I didn't yank really hard after I had it out of the valve cover.
I think I may try the pullig the whole line bit by removing at the opposite end. While routing it back may be a pain, it may be safer than replacing it blind as if there is a problem with the line or the rubber hose, I would have no way of knowing.
Can't wait!
Thanks again!
Louis
Cargo Master
Joined: Aug 2002
Posts: 2,013
Likes: 6
From: Cajun Country
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From: Central Florida
Not far from you. I'm in Intercession City. That's just west of Celebration. I'm about a mile from Hwy 27.
Thanks for your responses.
I have a 98 standard cab long bed with the factory dual exhaust, which I was greatful four until I found out I needed four O2 sensors. Ouch!
It's in great shape, but I'm looking to make it better. I want a chip, TB and intake. I've alreay done a lot on the interior, but plan to do more.
I spent the whole morning this morning making the chrome exhaust look like new.
Louis
Thanks for your responses.
I have a 98 standard cab long bed with the factory dual exhaust, which I was greatful four until I found out I needed four O2 sensors. Ouch!
It's in great shape, but I'm looking to make it better. I want a chip, TB and intake. I've alreay done a lot on the interior, but plan to do more.
I spent the whole morning this morning making the chrome exhaust look like new.
Louis
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From: Central Florida
In my case, I found an additional vacuum hose that goes from the PCV valve to the very back of the manifold. Mine had a real wild concoction of connectors that made a "y" connection between the tube Blue Oval refers to and to the PCV and the back of the manifold.
Wasn't easy to change, but found a big hole in it when I got it off. Replaced this hose and the elbow referred to above. (don't think it would have lasted much longer, it was real soft.) This cleared the codes and the engine idles fine again.
After, the warnings about how hard it was to get all this hooked up and reroute the tube, here's what I did. I bought a two foot length of fuel injection fuel line (3/8"). It costs more, but I figured it would last longer than vacuum hose or regular fuel line. I slid the fuel line in from the back of the engine and attached the tube. I used the line to pull the tube back and then cut it off and attached the rest of the stuff.
Thanks to all, especially Blue Oval who set me on the right path.
Wasn't easy to change, but found a big hole in it when I got it off. Replaced this hose and the elbow referred to above. (don't think it would have lasted much longer, it was real soft.) This cleared the codes and the engine idles fine again.
After, the warnings about how hard it was to get all this hooked up and reroute the tube, here's what I did. I bought a two foot length of fuel injection fuel line (3/8"). It costs more, but I figured it would last longer than vacuum hose or regular fuel line. I slid the fuel line in from the back of the engine and attached the tube. I used the line to pull the tube back and then cut it off and attached the rest of the stuff.
Thanks to all, especially Blue Oval who set me on the right path.
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