[dgt_mustang]

okay, recently after installing a CAI my cars service engine light went off. the code for it was the oxygen sensors, i replaced the one that is said was burnt out but i believe it continued to say the same one was broken as well as another one. is this a result of the CAI or my car reaching 100,000 miles? I just reached 98,000. please help.

[Juggalo_X]

Originally Posted by dgt_mustang okay, recently after installing a CAI my cars service engine light went off. the code for it was the oxygen sensors, i replaced the one that is said was burnt out but i believe it continued to say the same one was broken as well as another one. is this a result of the CAI or my car reaching 100,000 miles? I just reached 98,000. please help.

did you have the fault code cleared with an OBD2 tool? if not it will remain there until you clear it.

[aj28]

Like Juggalo said, you have to clear your codes to make them go away. Unfortunately while most AutoZone stores would be more than happy to read your codes, I don't believe they're exactly "allowed" to erase them for you due to ethics and whatnot. You can pick up a scanner pretty cheap though ($60-80 for a mini with erase).

The alternative is that your CAI threw something off. Make sure all the gaskets and rubber connectors are sealed up tight so you're not leaking or anything. Also, what brand is it? A bad filter could likely set off your sensors.

The idea that your mileage throwing it off is unlikely though, especially after you already replaced the one. My '98 has over 140,000 and I've never had issues like the ones your seeing.

[dgt_mustang]

i went back to autozone where they read the codes and they did erase them but the code popped back on after Driving a day or two.

the CAI is from americanmuscle.com (mustang tuning magazine)

[Juggalo_X]

Originally Posted by dgt_mustang i went back to autozone where they read the codes and they did erase them but the code popped back on after Driving a day or two.

then you have another sensor that is bad or a vaccume leak in the intake system. can you tell me the exact error code?

[dgt_mustang]

How would i go about finding the vacume leak? i know im probably going to replace another O2 Sensor just to see the outcome buty how do you go about finding the leak? ill get the code from autozone and post it on here tomorrow.

[Juggalo_X]

Originally Posted by dgt_mustang How would i go about finding the vacume leak? i know im probably going to replace another O2 Sensor just to see the outcome buty how do you go about finding the leak? ill get the code from autozone and post it on here tomorrow.

use an unlit propane torch and open the valve so it seeps out and run it around ur intake if ur idle increases you have a leak in that general area. u can also use TB and Choke cleaner spray for this. do it outside in a ventalated area so u dont die from the fumes, thats a tip thats kept me kickin lol

[dgt_mustang]

lol alright, I'll attempt to try that, thanks, look for the code on here tomorrow, ill probably replace the sensor tomorrow to.

[Juggalo_X]

Originally Posted by dgt_mustang lol alright, I'll attempt to try that, thanks, look for the code on here tomorrow, ill probably replace the sensor tomorrow to.

k ill check back when i get an email with a reply

[ByPopularDemand]

I thought if you fixed the problem, after enough driving cycles the light would go off

[Juggalo_X]

Originally Posted by ByPopularDemand I thought if you fixed the problem, after enough driving cycles the light would go off

It takes 3 Driving cycles to make the code pending and then 40 warm up periods to get rid of an O2 code from the freeze frame and pending DTC storage area on the pcm

[MustangMo]

I have the same problem, but i don't understand how people were sayin to get it to go off.

[itschristorres8]

did you hook the CAI up correctly 100%....if you messed up the MAF or the other sensor it's a good chance it'll go off

you could always get a XCAL2 and clear it

[El_Cangri]

lol i know some asshole that confused one of the sensors with the bypass..

double check everything... i wouldn't erase the code with a xcal or any other tuner... get the code and post it here so we can tell u if its safe to erase it

[MustangMo]

How do i get the code?

[Racerchik02]

This may sound ridiculous...but make sure your gas cap is tightened correctly...a lot of times the check engine light is just that.

[El_Cangri]

true.. happened to me one after cleaning the t.b and it was the cap... when not seal perfect it will send a ligth

[MustangMo]

No its not my gas cap checked that its somethin to do with my cai or than its somethin else. But its just came on after i put the cai in, so i am guessing it has something to do with that.

[MustangMo]

Ok i think i found the problem, the hose that goes from ur cai to were ur oil pan or whatever u wanna call it, was disconected, the problem is that hose is to short n i rele had to stretch it to get it on n it just pulls out, so i am gonna try to get another hose. What do ya'll think?

[Juggalo_X]

Originally Posted by El_Cangri true.. happened to me one after cleaning the t.b and it was the cap... when not seal perfect it will send a ligth

yes it will light your check fuel cap light :wink sounds to me like this isnt the case