so this is my first monte carlo. it was givin to me by my aunt who said "it looks to hip for someone her age to drive" so she gave it to me. SCORE for me. plus its an SS
anyways she then tells me it has something wrong with it and has been sitting for a month or two because of this issue so the problem discribed is not because of sitting. she says someone told her it was the MAF.
so i did some searching around on some sites.
first
i pulled the iac and it was closed. when i say this i mean it was pushed all the way out blocking the hole that the plunger is supposed to block (at times). i read you can remove the iac but leave it plugged in, turn the key but dont start it and the plunger should move in or out.
so i did this and it funtioned , at that moment properly.
then
i took apart the mas and tested it as this site
Testing mass air flow sensor directed me to.
i couldnt get a diffinitive answer on the ohms and when i tested it by blowing into it the volts didnt not fluctuate.
so i put it back together started the
car and it started up and idled nice and smooth as if there wasnt any problems. so i took it across the street to get some gas in it. it drove great, no issue.
i get back to the house and let it idle, never turning it off. after about a min of idling it starts to go up and down like a vacuum leak would sound. so i unplug the mas and the idle just goes up to 3000 and sits there. i plug the mas back in and it starts stumbling again. so i unplug the iac and it stayed ****ty. so i plug that back in.
so i unbolt the iac but leave it in place. then i angled the iac alittle to let a tiny bit of air in it seems to level out. put her to bed for the night.
that was yesterday
today this is what i got. when i start it, it stumbles and then idles high for a sec or 2 then it comes down in r.shared_pm and fluctuates between 500 and 1000. then it will spike a hair (1500-2000rpm) sometimes and backdown. sometimes i can hear backfiring.
sometimes when i start it it stalls out, sometimes it starts fine. when it was stummbling i unplugged the MAF and it stalls the car, it didnt get better.
i went and bought some CRC MAF cleaner tried that it seemed to level out alittle(mabey) but still rough starts. i checked the k&n filter it was clean.
it is throwing a code i have to get it across the street to have it scanned.
im sure ill have more answers after that
but do you guys got anything before then?