ib_jimmy

Well Thursday my cheap intake off ebay came in...i installed it the same day and it work...car drove even better than before. On Saturday it started to feel like it was choking when i'm slowing down...Saturday morning the car was reving on its own, the check engine light came on, motors shaking and you can hear the intake sucking and droping....well i check everything i could....changed out the spark plugs, spray the throttle...after all that....it acutally got better but...not normal yet. it idle at 1500rpm and jump up and down a lil bit. Well i took it to the shop and diag computer said it was 2 of the O2 sensor....said that the ECU program and the data output ?=T was messed up. Idle sensor and stuff....well he told me to leave the car there so he look at it more before we install 2 new sensor at around $250 a piece (is that right) and turn out to be the ECU.

I dont think it was the intake that fucked up the car i think after i put on the intake i was driving hard. But any ya know what's going on with my car? Also if it is the 02 senors would anybody that's parting their 3.0 help me out.

SooDARK

def has nothing to do with the intake

ib_jimmy

oh yeah i put the stock intake back on and it was still doing the same thing. the car isn't burning any smoke. rightnow i can drive it....but because it idle at 1500 i have to hold the brake a lil bit harder and when i let go o fthe brake it take off a lil faster....and sometime it feel like its choking when driving normal (slow)

Always Dirty

Maybe the intake was throwing off the computer's air/fuel mix?

ib_jimmy

i thought i fucked it up by driving it too hard before i reprogram the ECU.

HyDrOpOnIkToKa

take it to autozone and get free diagnostics
disconnect from power for 10 seconds and see if it clears

ib_jimmy

I've done that a bunch of time....even took out the ECU fuse. it clear it out but right when i start it up the light came back on...I took it to Star Auto on Beltline and 75. a friend recommended that place...dude seem to know what he's doing but dont know whats really wrong with my car.

Always Dirty

Could be - ECUs usually adjust to mix changes gradually, not instantly. For example, my friend moved to Colorado and his car was sluggish and felt like it was going to stall for almost a month. Then it got back to its normal self.
Have you tried disconnecting the battery like Hydro said? It might be worth a try.

ib_jimmy

I've done it everytime i change out something and it does reset it....but it comes back on again

Always Dirty

The ECU could be fine if you lost two oxygen sensors. I had an old Saab that would rev and drop on its own when the oxygen sensor went. Idle was all messed up too. See if you can find one on-line (ie not at the dealer) - they usually just snap in - and take it to a mechanic or read up and do it yourself.

Butter98

JB-Mine does the same shit every so often, but not constantly. It seems when I am driving hard, it doesn't want to settle down (revs on its own at idle, shifting gets screwy). It comes and goes on this end. I don't have a solution for ya, just wanted to let you know your not alone. Anyone else have this prob?

ib_jimmy

OH!! and when i drive I also smell something like burning rubber....but my tires isn't rubbing the wheel weld or anything. Only smell it when i drive for like 15min or more.

Always Dirty

That might be a belt. Pop the hood and check em out.

ju5tchi11in

did you plug everything back in? you could have missed plugging back in the O2 sensor plug I forgot to do that. And they symtoms sound similar. The burning rubber smell I have that too I was thinking it was my new tires since I didn't get an alignment, and my steering wheel shakes at 70mph. then again it might be the different series tire less rubber 40 instead of 55 like stock. but... maybe it is my belts hope not (cross fingers) to expensive.

ib_jimmy

nah its not the belt...and the timing is right...all the sensors are plug in right....he said its the O2 sensors from the exhaust not the throttle. My mechanic just call and told me he's gonna order the idle sensor and try to reboot the ECU and see if that will fix it...cuz its rare for 2 sensor to go out at the same time.

Always Dirty

Good luck - hopefully the bill won't be too painful.

CL-zero

that stuff happened on my car too.
i asked my dad and he said it suck too much cold air.
the engine check light come on when the outside is very cold.
i left it like this for 3 weeks and it don't happen any more.

isn't that intake cost around 80?
i think i have same one on.

rEmixnZZa

did you forget to put in one of the plugs right on top of the intake? check to make sure ALL The plugs are in

i forgot to put 1 plug in (mayb 02 sensor plug or something like that) but its right on top of the place where the intake connects to the engine, and the rpms pretty much went crazy

i was so scared, until i realized i forgot to put the stupid plug in lol

wilp99

did it run fine when you first put the new intake on? if it did then its probibally the o2 sensors. you can do them your self. they are like $70 at autozone. you can change them hour self. they are like a really tight sparkplug. infact theres a socet you can buy for 10$ and it will be a snap. unless you want to take it to the dealer.

wilp99

or have someone ohm out your iac (idle air control valve), and tps (throttle position sensor). on your throttle body.

ib_jimmy

Intake won't mess up my car like this....it was the driving after i got the intake that messed up my car....they're replacing my idle control today hoping that it will fit it. All the plug are plugged in....the print out say its the 02 sensor on the exhaust...its reading zero....but he said it rearly that both 02 sensor goes out at the same time...so it might just be the computer. he's gonna change out the idle control and reprogram the computer and see if that'll fix it.

ding069

OK, the rough idle could be due to one of the vacum lines from the intake being improperly connected. Did you def make sure that they are tight on the intake and the connections to the engine? A shaky idle is a VERY common problem from incorrect vacum. The o2 sensor just screws into the cat, and is easy to change out, you can def do it. Reprogramming the ECU is bs, he is probably just going to reset it. Like someone said, get a free diagnostic from autozone, and see what that says. As for the bad smell, that could be associated with a bad catalytic converter, and that is where your o2 sensor is located.
Hope this helps
BTW, pray its not the ECU, that costs lots of money for a new one, install is cheap though.

ib_jimmy

hey ding, will a bad catalytic converter make it smell like burnt rubber?

ib_jimmy

how much u think those o2 sensor for our cars?

ib_jimmy

I finialy got my car back....it drive like a champ again =) They only replace the idle control and reset the ECU.....running perfect.

ding069

thats good news. how much did the idle control cost to replace?

ib_jimmy

$200 parts and labor. Plus $75 for diagnostic.

wilp99

i just put an intake on my 3.0 and now mine is doing the same thing. im sure its the iac also. do you have the price of the acual part?

aGUYfromHARLEM

man mine is doing the Same thing, i gutted my cat, and i have a aftermarket intake, i have to spend 200 bucks to fix it?! thats crazy, my engine light has been on scince i gutted my cat so idk if its throwing a different code, i belive i can buy a part from summit racing to fix the 02 sensor reading,

ib_jimmy

the part was like $100.

i've been driving it for over a week now and its driving great.