I wasn't sure where to put this, but here it is.

I installed an injen intake with intercooler hardpiping last week, install seems fin, all plugs are connected, no kinks everything is tight. Well, every since then my service engine light has come on. I think I may have messed up the MAF because I was stupid, or tired or both and unscrewed the 2 screws that hold the plastic thing that the plug plugs into, I started prying it off a little, untill I could see the metal prongs in it, and thought I was doing something wrong. Stupid yes, but I couldn't tell where the thing really unpluged until I went to far. Well, after that I put it back together, and finished the install. First test drive I didn't tighten the bov enough on the intercooler hardpiping, and it blew off, and stalled the car. Second one seemed fine, nothing wrong. The car seems like it runs fine, but the ses light never went off and so I pulled the codes. This is when the stress happens...

8 codes. also all were duplicated once. but 8? is it possible that I just need a new maf and everything is fine? I hope. I am completly broke right now with carpayments and other things I had to spend my money on. I have only money for my carpayment and insurance for the next 2 weeks. I can't afford to take it in right now, so hopefully someone here can help me, and if I do need a new maf then I will get one soon, if I have to get it checked out, it may be a while till I can. Anyhow here are the codes from the obd ll:

P0122
tps/pedal position sensor curcuit low input
P2228
barometric pressure circuit low
P0441
evap emission control system purge flow
P1400
Manifacturer control auxilary emission control

These codes appeared twice on the obd ll. I don't have the stock intake tubing, so I can't go back to the dealer, and pretend like nothing happened. Is this something as simple as a new maf sensor, or is this going to cost alot of money for people to look at it, and buy parts for it, and so on. I have over 2000 miles on my evo, please help me get it back to perfect shape!!!! I've been stressing out about this all week.

 

ya i would say its messed up, clear the codes and see if the come back... If they do borrow a fellow evom MAF sensor, clear it again and see if it does it again. Hope u find the problem.. PS MAF are very expensive just buy a standalone ecu and run a MAP sensor

 

oh shat! .wish i could help ya,but i don't know to much about codes.someone help this guy out.the best i can do is bump ya.hope everything works out

 

I was looking all around for used ones. If I clear/delete the codes, that won't make them disapear, but still have a problem will it? I mean like if I cleared them, and they were gone, would the problem still exist and the ses light will stay off? Cuz I want it fixed. I was in a hurry when I wrote the first post and forgot to ad that I can hit boost just fine, throttle response doesn't seem lower if thats what that code means, and it runs fine. The idle fluxuates, and when I roll the windows up or down, or use the ac or fans, it drops like 200 to 300 rpm. I don't remember if it did that before. I may have to buy a new sensor. I looked all over the net for a new or used sensor, but I'm going to call the dealer and see how much it might be for a new one. It may be expensive, but I have to do it. I've reset the ecu and when I start the car for the first time after, it jumps up to 2k rpm, and the ses light doesn't come on until a second later when it drops to 1-1500. new MAF is it then..... Not for a couple of weeks though. Thanks for the replys and the bumps.

 

hum thats odd... but clear the codes if it is a problem the codes will return, if they return then u know yes its a problem. What all did you touch before this problem occured...

 

I had to get up early in the morning to do the instal, cuz I had work and couldn't wait to get it done (Look where impatience got me) I was messing with taking off the maf sensor plug, and the only spot I could see that it would come off is with the 2 screws being removed, and being pulled out. So I unscrew the screws, and start yanking it. I got it far enough where I could see the metal plugs, and then I though it shouldn't be this hard. I pushed it back in, but it wouldn't go, so I used the screws to force it back in, and basically hope for the best. It's the only think that went wrong on the install. Other then that, everything was smooth. I was in denial at first, and didn't want to expose my stupidity, so I didn't tell anyone what I had done. Well, the well being of my evo is more important then that. So people can flame if they want, but hey, I've never really worked on a car before, and blah blah blah...Well, now that I think of it, I can make a thousand excuses, truth is, it's just me not paying attention. Usually I have common sense, but not this time I guess. Well, now I have to pay for my mistake.

 

Tweaker, it's your MAF, you will need a new one. Sorry to hear about that. Yeah, you shouldn't have messed with the MAF. You should have just taken the 4 bolts that hold the MAF and filter box together out and just unplugged your MAF and put it away until your ready to install the pipping. If you took out the two screws holding the MAF plugg out and started yanking on the plugg to pull it out then there is your problem. It needs to be replaced and I'm sure a MAF is going to be pretty expensive. If you need anymore help, let me know.

 

Just got off the phone with the dealer. New MAF is $452.92. That certainly does suck for me, and my car won't have functional maf for at least 2 weeks. You think it will cause further damage to anything else in the car without it. I'm wondering if I should just unplug it untill I can get a new one, or if I should just leave the messed up one on. Should I even be driving the car?

Damn though, a $452 mistake. Well, I've always been a firm believer that you make a mistake, and you gotta pay for it, one way or the other.

 

Maybe one of the guys in the classifieds that is parting his car out can get you one cheaper and you may be able to get it faster too.

 

if your going to spend 500 bux then just go out and buy a stand alone... The MAF sucks anyways only good for stock

 

what makes you think this guy can program the stand alone? he messed up the intake install. i have a fair amount of tuning experience and i fear the stand alone. tweaker, no offense, everyone has learned the hard way at some point.

 

I just want my car back to normal...For the most part with the injen intake. I don't want to mod it out like crazy. Just a few boltons, and I'm happy. I'll keep my eye out on evos being parted out, but for now, I'm just gonna start saving my money. Car payment and insurance is due on thursday. Also, if I was going to get a stand alone, I would get it professionly done. Theres only a few things I will try myself. Hopefully I don't **** them all up though.

 

Check the Private For Sale sectoin. I think Nastea was selling one.

 

twEeker, have you try putting back the stock intake airbox and reset the ecu to see if the codes come back, sometimes the aftermarket intakes will make the car idle funny and throw a code, this way you'll know if you MAF is mess up or not, before you spend your $$$ on a new MAF...

 

Ouch! $452 dollars? Man I was thinking in the range of $350 but $450 . Tweaker, you can still drive around in the car with the check engine light on. It's not going to damage the car, only a little lost in power due to ECU seeing possible problems.
Do you know anyone with an EVO in your area that might be willing to borrow you their MAF just to put it on your car and test to see if the check engine light goes away. Try to do this first if possible before buying a new one. Troubleshoot your resources first before spending $452 dollars. Another thing is, since you already took your MAF plugg apart, why don't you go take your MAF plugg out again and try to reset everything inside of it to see if this will fix your problem. Maybe when you took the plugg out and when you shoved it back in something just got crimped or out of place. I would recommend doing this too. You don't have an option now, so go ahead and play with the MAF and see if theres something out of place inside the MAF plugg. Also, check in the classified adds here and see if anyone is willing to sell their MAF to you. Check out the users who have AEM, they normally will never use their MAF's again so they might sell you theirs for pretty cheap. Good luck!