Durr727

Alright this problem started after I filled up at a gas station about 4 months ago and has decreased a little since then but still persists.
Under acceleration the car will studder and struggle like it wants to go but won't.

Everyday the studder is more/less noticeable; it isn't consistent at all.
It also is more prevalent when the A/C is on, and it happens greater in every higher gear.

Whether these make a difference or not, this is what I have done to the car in the last 4 months: Change the fuel filter, air filter, brake fluid, coolant, cleaned the MAF/carb/IAC, and ran LUCAS fuel treatment thru a tank.

I also had a a shop plug it up and see if any codes were present but he said since I jumped someone's car and the battery cleared the codes or something? none will ever show.

But I'm stumped and I'm tired of my car performing like crap and to top it off someone just did a hit and run on me in the parking lot while I was in class. :/

Thanks for any help guys.

Obsequious1

I had a simular problem, well actually it sounds exactly like my OLD problem. Sometime after it rained hard or after I washed my engine I would experience what your going through. I tried everything. After a day or so the problem would go away only to return when it raind or I cleaned my engine. After I blew my supercharger tube off (before the MAF)one day, I noticed there was rusty water marks inside the tube. I think that was my problem. I reinstalled the tubing and clamped it super tight and I haven't had the problem since. I'm not saying thats whats wrong with your car but I did check my MAF 2 times after the sputtering started and I thought it was OK.

Durr727

Alright I'll give that a try, and are you talking about the tubing near the TB or only your S/C tubing?

SilvrStang

Did you check your plugs? Try cleaning out the IAC, spray the living **** out of it with electrical cleaner.

Durr727

Yeah I cleaned the IAC but there's no harm in doing it again, is electrical cleaner the same stuff as the carb cleaner?

SilvrStang

Im not sure I think it is. How about the plugs? When was the last time you changed them

Durr727

Well I got the car a little over a year ago and only put like 5k on the car, it has 83k now.
I haven't changed them.

AlabamaCobra

hey man if you are still having trouble, fill your car 80% full of 93 octane then top off with the highest rating of racing fuel you can.

Durr727

Well the problem is when I floor it (like 3/4 +) but when i gradually accelerate the problem isn't present...thus it is most likely associated with the fuel.
Maybe the fuel pump?

SilvrStang

Start from basics dude. Troubleshoot the car from basics