Recent content by mntb

Those were the two options I was considering actually. Space looks kind right to get the cat out over the crossmember. Any tricks or tips? Or just support the trans with a floor back and drop the crossmember?

Wonderful. Any benefit to go cat-less? No emmisions here. To replace the cat, does the transmission cross member need to come out or be dropped? I found a full exhaust minus the manifold for $125 with 02 sensor. Not too far from me. From an 2004 swb. My whole system looks kind of rusty...

Moosman, Actually yes. I believe it's a code like p0267. I read the codes but forgot to post which codes. There is an evap code which I believe is for the gas cap with no deal (rotted off). But the code you said has been on for the few months. It's not new.

I tried that. Sounds solid. Maybe there isn't any more loose pieces? But I if I shake the exhaust from the exhaust top, i can here rattling around In the muffler.

Muffler is on the list of repairs. I wanted something with a nice sound but not super loud. But haven't really found anything i like that Isnt super spendy. It seems like Its a tall order to me the 4.2 sound good. Probably just going to go with a walker soundfx for now, whenever the important...

Previous owner cut off the coffee can resonator. So as far as I can tell all that's left is the muffler or the cat. But how would chunk of the cat make it through the muffler? I'm thinking that too. Just need to find the time.

Well, tried cleaning the contacts/connector for the camshaft position sensor. Still no change. The part that confuses me is why is the exhaust so quiet? The muffler has a small hole in it which makes it pretty noticeable. But now it's almost as quiet as if it doesn't have a hike in the muffler...

I tried pulling the o2 sensor, a little improvement. Should the be a huge difference? I might pull it again just to to sure. Budwich, I meant when on the highway in the event I had to pass someone or whatever it could rev that high if I downshifted, if I pushed it to do that. The shop manager...

Need some help diagnosing it at least narrowing down the list of possibilities. 2003 gmc envoy 4.2l swb, 222,xxx miles Idles normal, revs in park like normal, driving nicely in the city like normal. But when giving it more than 1/4 thottle, it will accelerate until it hits 2500rpms in any...

Is the stock cat back system pretty restrictive? Or is it like the 3.8l Grand prix's/regals/etc where the exhaust manifolds are the major restriction in that exhaust system? I figured there was no gain for duals, just looks. Especially from a I6. I simply think it looks odd to only have one...

Has anyone used the walker mufflers? Orielly's has a walker soundfx muffler for $46. Might be an option. The soundfx is supposed to be louder than stock I think. I just don't know how it would sound. I looked on youtube but didn't find any on an 4.2l i6. I would probably just clamp it in for now.

I might just try to get a cat back from a parts tb/envoy/etc. Looking at mine, I'll end up replacing the rest of it when it falls off in a year or so anyway (I love the Minnesota salt). Thats depending on what else I find here in the next few days. The ss exhaust kind of bummed me out a...

Yesterday a hole broke through the casing on the muffler of my Envoy. It's on the bottom near the rear of the muffler. And it's LOUD! and it sounds like a beefy civic. It's kind of embarrassing. My cat back is kind of rusty. So I thought maybe replacing it with this cat back or one from the...

Good info guys. Thank you. Any ideas if the bolts on the cross bar or straps are replaceable? This is not a job I want to do right now. But I'm sure it will go from a small leak to a guiser soon enough. When I had the ext's tank fixed the bill was over $1000. I definitely don't have that...

How difficult would it be to change the pump and/or tank? when comparing this job to something easy (brakes, wheel hubs, etc) or something like changing the spark plugs on the 5.3l? I have ramps that are a little taller than most (they look to be home made, metal, and heavy), Jack stands, floor...