I've known that my truck needs the plenum kit from hughes for a while. its been useing about a quart every 3000 mi. and i can see oil when looking down the intake holes. I was waiting till warm weather to fix this and well now my procrastination has caused what i believe to be a clogged cat/ bad O2 sensor. It now idles like it missing and runs rough with no power and bad gas mileage. Obviously both need to be fixed, but my budget will only allow me one per week. so do i fix the plenum then the cat. or....cat then the plenum the next week? Its running like sh** now, but was manageable when the cat was good. so im leaning towards doing the cat first then waiting a week or two to do the plenum. thoughts???

 

ok i know my truck plus my bros truck had the same problem...my opinion cut the cat out clamp in a pipe for a week ($30) MAX then change the plenum. Cause u figure you do the cat first you got a new cat ALOT more money than a new plenum. and all you do is drive your truck for 2 weeks you fill your cat back up with nasty burned oil. so think on it thats just my Opinion

 

i would however never reccomend running a truck without a cat. Cause that illegal lol :-)

 

i agree, cut the pipe behind the cat and gut it out, then just get a new 02 sensor for now, it will get you by until the next check, unless you have that much oil blowing down, but that would be alot............

 

Well ive been out messing around the last couple hours and also determined that the wires and plugs, and cap and rotor could use some replacing. When I pulled the wires off the plug there was corrosion in there similar to battery term. corrosion. The plugs themselves looked good (nice color and not worn looking). Also when I pulled the front o2 sensor and started it, it ran the same. Does this mean its bad? is it pretty straight forward as far as changing the cap,rotor on these besides the tight space?

 

man to b honest the cap and rotor is ALOT easier with the intake off...also i got a set of oem wires with 40xxx miles that i would give to you for the shipping cost. Prolly $5 bucks if you want to go cheap just to get by. but as far as cap n rotor i would just wait till i did the plenum

 

really that hard? looks like only the 2 screws to get it off, then switch wires from old to new, switch rotor, reinstall. no?

 

It's not hard, but it's really not hard with the intake off.

 

I would do plenum first then the cat. If you do the cat first it will get oil in it again

 

not that hard to get off or get hard just hope you have small hands and enjoy saying 4 letter words. I did mine in about 45 minutes but it did **** me off a few times