Clogged Cat? Or Something else?

[wrichards2005]

I have a 91 Auto, F22A1. I'm just trying to figure out if it has a clogged cat, or something else. When I try to start it up, it sometimes just starts, but usually just shakes and turns off the first time, or shakes and finally catches and it stays on. (It feels like a misfire when it does this, and it typically only does it when its warmed up). Also, it revs kind of slow after its warmed up, almost seeming like its in the wrong gear (which it isn't). Also, it the exhaust is always loud, even at idle, like theres a lot of pressure. Even the loudest Cb7's exhausts I've seen are basically silent at idle, but mine is always loud. Any ideas?

[Accord R33]

sounds more like a timing issue than a clogged cat...i would check your timing

[NAiL05]

Exhaust Leak could cause some of that since you say its loud but i dunno about the part where the car cuts out. No CEL or anything?

[wrichards2005]

Well it doesn't cut out after its started, it just tries to start sometimes, vibrates and kicks out.

[NAiL05]

Hmm if no CEL id do what Accord R33 said recheck your timing. Was any work performed on the car before this started happening?

[wrichards2005]

Not really, its been doing it for as long as I can remember. It doesn't have any power when it shifts into 4th (usually at 40 MPH), it is SLOW as hell to accelerate unless I keep it in D3. But thats only when its cold. No CEL's