Rep Power: 780

The other day my car starting doing something wierd. Everytime i got on the gas it acted like it wanted to hesitate. So i took it straight home and tried to see if we could figure out what it was. Well i didnt really worry about it that night. The next morning i get up to go to work and i start the car, it starts then after the rpms start to drop so it can idle it just dies. The rpms wouldnt even stay up for more then a couple seconds. Anyone have any ideas? Even when i hit the gas to try to make it stay running, like i said the gas wants to hesitate. Thanks for your help in advance!

 
Rep Power: 780

Ok, Ignore this post. I have figured out the problem. I will tell everybody what the problem is on this thread just incase someone else runs into the problem, insted of the deleting the thread. I unplugged the mass air flow sensor and everything seemed to be fine, no sluggishness or anything. So i'm getting ready to leave to go get a MAF sensor. :/

 
Rep Power: 895

Sounds like the problem I had when I disconnected the alarm, lol the **** alarm wouldn't let the car start until I reprogrammed it.

 
Rep Power: 780

Well. I just got the MAF sensor installed and its working wonders!! This looks like it was my problem all along with the car dieing at low rpms/idle. The MAF sensor seemed to be going out for quite some time now. I think i could shave a whole second of my drag time now! :-D

 
Rep Power: 733

okay i am clueless on this but my car idles at 1000-1100rpm for like the first 20 minutes of running, and if i dont let it idle that long and let the Rpms drop to at least 800 and when i shift into Reverse or to drive it will almost stall you dont hear the engine for a whole second then Bang full throttle for another second then back to idle at 1200 and i have to hold the brake cause it will do like 40mph at 1200rpm LOL, alright after this problem(happens everyday) i go up a hill or something and hit the gas alittle bit and the engine makes a deeper noise but nothing else changes and if i let off then go again sometimes it works most of the time nothing changes.. except i am going slower now lol, um its tbi everything is hooked up, smog controls, everything is there and works sometimes my check engine light comes on.. every now and then. i dunno why though, it has a Not stock 350 with 20,000 miles on it the original motor was a 305 tbi.. could it be the fuel filter? or the spk plugs?

 
Rep Power: 1069

check what code is stored (every time the light comes on there is a code) almost sounds like an egr miss though

 
Rep Power: 724

i had the same maf problem, and me and 69z-28 drove all the way to randhurst (which is like a half hour away) and it was dying the entire way there and back all because i didn't have the book to see what the code meant (we checked it about half way there) the new (rebuilt) maf was only like $120

 
Rep Power: 780

Sounds like you are having the same problems i am having. So far to fix these problems, including idle surging, etc. I have replaced the MAF sensor and here in about 30 minutes i will be replacing the Idle Air Control. My car is throwing a light but for some reason we are having trouble getting it to read a code. You might want to also check your TPS as well. Check your IAC and make sure its cleaned out well.

 
Rep Power: 1069

if the code doesn't read teh ecm is probably bad (real common on gm vehicles)

 
Rep Power: 780

Ok, Here is the full story/update on the problems i have been having. Hope someone can help me!

My check engine light came on at random times. I didnt think anything of it at first until i went to go start my car one morning and as soon as i started it up it would run then die, wouldnt even idle. So i replaced the MAF and it seemed to fix it but i was still having rought idle issues(idle was surging at lower rpms). Then i got another light and it said it was the MAF Burn-Off Relay, so i replaced that and the MAF Sensor relay and while i was at it i went ahead and changed the IAC. It seemed to be running better except that it was CHUGGING at idle insted of surging. So i checked the codes again and now im getting a code 33 (MAF Sensor) and a code 45 (Rich Exhaust). Anyone have any ideas? Could this be something simple like the fuel filter or could be something as complicated as the injectors? Thanks in advance.

 
Rep Power: 1069

clear the codes, and see if those same ones come back, a fuel filter won't set a maf code, or rich,an o2 sensor, and maf sensor both can cause that. So can a bad ecm (I used to have a dozen test ones for teh dealership) what you describe is exactly what I had on a c4 vette that ate my lunch (was one of teh first vettes I worked on) to catch it I ran out of gas doing a road test, the gauge showed half a tank, teh vette the ecm controlled the digital dash.If you can find someone with a car like yours you can swap the ecm to test that (maybe a junk yard would let you if you ask nice)

 
Rep Power: 733

um my check engine light comes on but the engine is still there..
J/k the engines there lol but it comes on random too.. but i havent had any stalling problems yet except when i start in morning and go without it idling for a minute.. it will stall..