keep in mind the exhaust is almost 2" and the o2 sensor hole is barely a 1/2"
but if it ran better, aside from the issues of no o2 sensor, then you are highly likely to have a clogged cat.
The coil if it is bad, will absolutely kill power. If you spray the stuff with a spray bottle, dont lean on the car etc. you will not get shocked. It will arc to the engine head (path of least resistance). Just keep your distance and do it at night, so yo can see the light show, versus looking for it.
Yeah, with the O2 sensor off I thought that I would gget my power back, but it still has a loss of peer and I have to floor it to build up RPMs, but it was running a little better, I put the O2 sensor back on and drive it to work which is about 15 miles away and I had to have the gas pedal floored the entire way on the highway, and it went through a half tank of gas. So yeahbim thinking it may just be the CAT and O2 sensor needing replaced. I was able to get it up to 70 and the turn on the cruise control, but anytime I came across an incline it starting losing speed and power an the engine went into high RPM mode. What do you guys think, CAT and O2 sensor right, I'm talking with an exhaust shop tomorrow.
Thanks guys.
Just curious, how many catalytic converters are there on a chevy aveo. I just finished talking with n exhaust shop and they were telling me that there are 2 converters on it. Theres the manifold converter and they said there is one right behind and below that one. I looked and could only find the manifold converter. Has anyone heard of there being two catalytic converters on a 07 chevy aveo sedan?
nope, just one cat
my 09 has a post cat, its about under the shifter.
My 08 has 2 cats on it, IMO i would say its the coil. Mist water over it and that will tell you. If the coil is bad, that would cause the cat to go bad. ( happened to an 02 ford tarus, coil went bad and took all 3 cats with it. ) Why fix one thing that is an issue and come back to the original issue that caused the issue in the first place? To sum it up, check your coil... Mist it with water. Just stand back you will not get shocked...
I took the CAT off of the manifold today, and yes it was very loud! However it didn't run much better, it still had no power to it, and when I floored the gas pedal it still had to build up RPM's and it barely had any power, so to me it doesn't seem like it's the CAT. Any other suggestions? Could it be a thrown rod or something? I know you guys suggested the coil, but if it was the coil wouldn't it have problems starting? It starts up no problem.
Also, when I took of the Manifold CAT, there was nothing inside of it. It was smooth as can be on the inside and I could see right through it.
stop thinking and check the coil already
running straight manifold will not give ideal running either, but you should have seen some improvement if the cat was clogged.
if it ran better with the o2 pulled it could be that. do you have a code?
to go along with rabbit check your plugs as well the valve cover gasket is bad in out cars and it seeps oil down into the combustion cmber it could also foil your plugs.
when my coil went bad it still started up fine every time
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2004 Chevrolet Aveo
Rupert