onlyjosh

Please fix if posted in wrong area.

Ive done all the research i can so thats why im here now. Hopefully one of you can help me get this figured out.

I have a 2005 Cobalt SS.

I currently have a Check Engine light on for the P0171.

My only mods are a intake, Exhaust & Short Shifter.

I read that the code could be because of the MAF sensor. Right away i looked and there's nothing that goes to my intake tubing. I can't even located the MAF sensor anywhere. I tried to look towards the end of the intake where the filter is and i didn't noticed anything.

I'll take pictures very soon and post them back on here.

appreciate any feedback on this.

onlyjosh

Anyone??

Slowbalt2000

iTrader: (1)

Take the bumper off, youll find it

onlyjosh

I found it behind the drivers side headlight.

I cleaned it but still a check engine light. So im not sure if thats bad or if its the o2 senor before the Cat

ItalianJoe1

iTrader: (10)

171 means the fuel trims are too far positive, more than 25% fuel being added. This could be a bad MAF, or too large intake tubing that isn't tuned for, or a vacuum leak, or low fuel supply, or an exhaust leak, or a faulty O2 sensor. Or something more exotic but those are the usual suspects. Start with proper diagnostics, figure out when it's lean (only at idle, all the time, etc) and how lean, see if adding fuel (spray into the intake) causes the O2 to respond. Check for air leaks and exhaust leaks. Check for good quality gas, i've seen cars that have 10-15% water in the fuel set lean codes and have no real other issues.

onlyjosh

Alot of that im not even sure how to do lol. I changed the MAF sensor and still same thing. Im thinking about replacing the o2 sensor next. Also the intake tubing does worry me. Its kinda ghetto. I'll get a picture soon and show ya.

ItalianJoe1

iTrader: (10)

If you don't know what to check, take it to someone who does. Throwing parts at it is a waste of your money and time.

no_ss

iTrader: (2)

X2

Plus the ghetto intake thing doesn't sound too right to me.

onlyjosh

onlyjosh

I'll prob just add a coupler to that part that just slides in.

no_ss

iTrader: (2)

Wtf m8 see if you can buy some piping in placing of that. No clue what that is but doesn't look like it would flow too well.

CobaltSS 16

iTrader: (3)

that intake is definitely throwing the code. and its highly resctrive... **** man get a new intake. ZZP 3" is nice.

This is how it should look:

efren6057

iTrader: (4)

Agreed

ECaulk

iTrader: (6)

Not only is it restrictive, it's a huge vacuum leak post maf, it looks like it's slipped into the metal pipe.

OP find a stock intake and buy it. Remove the current setup and install the stock intake before doing anything else. Even driving it.

ItalianJoe1

iTrader: (10)

Yeah if your intake is allowing air in after the maf, which based on that horrible setup i'm sure it is, that's probably the cause of your P0171 code. Fix that abortion of an intake first and see how it goes.

Slowbalt2000

iTrader: (1)

That looks like someone used a mk4 VW 1.8t lower charge pipe as your intake

ItalianJoe1

iTrader: (10)

Yes! I knew that looked familiar. VW charge piping would be a good match for that pipe lol.

onlyjosh

Well i gotta drive the car regardless lol.

I'll look around and try to find either the stock or zzp if money is right.

For now i ordered a coupler for it.

onlyjosh

It seems like my gas mileage is not as great as it could be. Im guessing this intake isn't helping the fact

onlyjosh

I just picked this car up for $4500 and since it seems like im just fixing the previous owners bullshit.

So far ive done.

- New headlights
- Short Shifter
- NGK plugs
- Mobil 1 Synthetic Oil
- Exhaust changing in the works. ( Ordered a Borla muffler )

onlyjosh

The previous owner was running "Reg" gass!, Also a 10w30 oil i think it was!

I had to change that right away. Sigh...

onlyjosh

Well off to bed. Thanks for the responses.

no_ss

iTrader: (2)

I can only imagine what else the previous owner did. At least you're making it right. For now it sounds like a horror story.

ECaulk

iTrader: (6)

Well if you have to keep driving it, at least rig it and tape the connection to try to minimize the massive air leak. It might help a bit until you can source a stock intake

Slowbalt2000

iTrader: (1)

Stock intakes are hard to find, but if you can find one stock is the best.