07cobaltss

ok so this morning i was on my way to work and i threw some codes. not sure what codes where thrown but the cel came on. the other day i posted on here that i thought i was having a cat clogging problem. so now we will find out..just wantd to know that if when some of you where having cat problems i was wondering if you hade the cel on?

chevytech

my cat has never clogged, but most of the time you will see an insufficient flow code and misfire codes if its in real bad shape. you will also see boost spikes and feel the car bog down real bad at wot especially at highway speeds if your cat is clogged.

its also quite likely that you are throwing a lean code from that intake. although the injen's are pretty good.

also how long has your xtc dp w/highflow cat been on?

dbeausoleil57

I had cat problems in my SS for a while. I had a cracked piston from the factory and the engine had a 60% leak down the #2. Had to get it re-sleeved and after they fixed that, the stage 1 was installed and there was another issue. For some reason I was driving around and my car was boosting 20 lbs. I was going across the I-90 bridge and I floored it and all of a sudden I heard a mild puff sound and saw chunks and smoke exit through the exhaust. Check engine light immediately came on and I took it back to have it fixed ( the ceramic in the cat was blown out) -the car sounded a lot better without the restriction though- anyway they contacted GM because there was so much going on with the car and they brought a specialist from chevrolet out to take a look at my car. Turns out there was something wrong with the programming in my car. Anyway two cats later and about a month of waiting and I had my car back, and it's been running well ever since. Chevytech is right, on the freeway my car wouldn't even reach 100 creating 20 lbs of boost. I tried once and my car shut itself down and wouldn't start for like 10 minutes I had to push it off of the freeway.

07cobaltss

do you know of any code numbers?

chevytech

i cant remember them exactly off the top of my head sorry. i see about 20-40 different codes a day. although you should be able to find an obdII codes list somewhere online that will give you a better idea of what your looking at. keep in mind that list will be universal so it may not show the code word for word the way a techII will.

o yeah and random misfire will be p0300 and the last number designates and individual cylinder. p0301cyl1 p0302 cyl2 p0303 cyl3 p0304 cyl4 and so and so forth for v6's and v8's

07cobaltss

its not installed its stock right now, i sold the one i got, but i ordered another one its in the mail. and i
n never thrown codes with my injen.

chevytech

well i would relax a lil about the code then. a cel will throw for 1 of about 500 reasons not all of them pertaining to the engine itself for all you know its an h02s heater performance code or an evap code. unless the cel starts blinking i would'nt worry. so if i were you i would make sure my gas cap is tight as that will throw a p0442 evap system small leak code and the dealer will charge you diagnostic time as that is not a warranty complaint. take it to autozone or whatever you have locally borrow their scan tool and find out what the code is. if it does not pertain to your intake then bring it to the dealer for warranty repairs.

splitintlss

hey guys i just threw a cel driving in normal conditions, i noticed some oil on the hood right above the dipstick, anyone know what this may be? i know it could be one in like 500 things but any ideas?

I just read the code it came up, "System too lean (bank 1) " i forgot the exact code #, a guy from autozone said its an o2 sensor?

Johnboy12358

If there is oil above your dipstick I would be worried, people have blown those out and ran out of oil because of a bad intake ghasket

splitintlss

its weird the cel went off tonight, gonna bring it in tho.