CEL after catback install

[BlankWoody]

I was on my way to school today and the car felt really weird when driving. It felt rough. After I hit 4k rpm it threw a cel off. On the way to school I felt the loss of power and it still felt and sounded rough. If I hit 3k rpms the car would shake. So I was driving 50 to 60 at 2k rpms. I haven't gotten the code read yet. I will after school. When I installed I had bought a new catalytic converter cause other one was done with. Any ideas on what it could be??

Thanks guys

 

[james'99]

I was on my way to school today and the car felt really weird when driving. It felt rough. After I hit 4k rpm it threw a cel off. On the way to school I felt the loss of power and it still felt and sounded rough. If I hit 3k rpms the car would shake. So I was driving 50 to 60 at 2k rpms. I haven't gotten the code read yet. I will after school. When I installed I had bought a new catalytic converter cause other one was done with. Any ideas on what it could be??

Thanks guys

Will it go past 4k right now?If not, probably a VTEC code and its probably in limp mode right now. Oil level?

Also, down pressure dramatically decreases when you install exhaust systems. I usually erase the codes/monitors regardless of whether there is a light or not when I mess with intakes/exhausts etc. so the proper air/fuel ratios can be learned. But it sounds like you may have a slightly different problem than that.

 

[BlankWoody]

It won't go pass 4k anymore. I was probably thinking a vacuum hose leak or something. Maybe not enough air is getting through the exhaust. But I'm not sure.

 

[james'99]

It won't go pass 4k anymore. I was probably thinking a vacuum hose leak or something. Maybe not enough air is getting through the exhaust. But I'm not sure.

Definitely check your oil level.

 

[RawCarnage]

Check the o2 sensors. Goto auto zone or any place like that and have them check the code. It's free.

 

[RedRyder]

Could be the downstream o2 sensor. Report back when you have the code.

 

[BlankWoody]

Just got the code read. P1259
guy at auto zone said it can many things... my oil label is super high.

 

[BlankWoody]

Level*

 

[xci.ed6]

How's the oil?

When was the last time you changed it?

What did you put in?

Why is it over-full? Did you add some?

 

[BlankWoody]

Last time I changed the oil was November. I haven't added any at all ever since then. The level is pretty high.