Hello!

Just bought a 95, 3.4l with 150k miles
just did plugs and and wires, what else should I do?

She has an exhaust leak, would this cause what would feel like a miss?

I picked her up for $800 with working AC!
Runs amazing except for what feels like the miss, and exhaust leak

rpm is around 1500 - 1600 @ 55mph this seems low, or is this normal?


Thank you guys, have been wanting a camaro for the longest time, my parents have had many, except they only owned v8's so they're of no help with the V6


parked behind my wrecked 3000gt.

 

hay, welcome to the forum slawson. exhaust leak will mess with the fuel mixture and yes can make it run like crab.

 

That assumes the leak is before the O2 Sensor, Leaks after the O2 sensor should not effect it. How did the plugs look? Normally with a miss your plugs will give you a few clues on what is going on.

 

Well I have an exhaust tick, so I would assume it's at the manifold.. when rolling (foot off brake pedal not on throttle) it shudders, roughly, and idles rough.
I'm ruling out the torque converter.

Plugs had a little carbon fouling and I mean minimal.
I'm starting to not think it's a miss, but rather back pressure?

 

A restricted cat converter is a possibility, and would cause exhaust pressure to push forward and out anywhere it can go. You can remove an 02 sensor and hook up an air pressure gauge to see if backpressure is excessive. Or disconnect the cat at the front pipe and see what you can see inside. Smack the bottom of the cat with your hand and give a listen. If it sounds like there are rocks inside, the innards are broken up and it needs to be replaced, cleaned out, or removed and replaced with a straight pipe. Be sure your car still conforms to emissions testing, if your car still gets tested in your area.

 

Yes sir, I'm in FL, so we aren't emissions tested.
I will do that when I get home.

When the vehicle is stopped at idle in drive I hear a heavy rattle from underneath the vehicle.

Thanks for all of the advice.

 

Any time. So, what got wrecked on your 3000? I parted our 91 out a couple years ago, and still have some stuff from it cluttering up my garage.

 

My rear bumper, and exhaust, what do you have? I'm interested!
I have a 93.

If you'd like to call or text me at 727 457 1672

 

I have a rear bumper cover (red), the inner impact bumper, and the rear section of the exhaust. All in perfect shape. Shipping would probably be a killer though.

 

I need everything except the rear impact bumper!