CEL after catback install

BlankWoody · Mar 17, 2015

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 · Mar 17, 2015

BlankWoody said:
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 · Mar 17, 2015

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 · Mar 17, 2015

BlankWoody said:
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 · Mar 17, 2015

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

RedRyder · Mar 17, 2015

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

BlankWoody · Mar 17, 2015

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

BlankWoody · Mar 17, 2015

Level*

xci.ed6 · Mar 17, 2015

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 · Mar 17, 2015

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

CEL after catback install

BlankWoody

Active Member

james'99

Well-Known Member

BlankWoody

Active Member

james'99

Well-Known Member

RawCarnage

Well-Known Member

RedRyder

Save the manuals

BlankWoody

Active Member

BlankWoody

Active Member

xci.ed6

Well-Known Member

BlankWoody

Active Member

Latest posts

Random media