Beaucanada68

Having a problem with acceleration. Car runs great below 3500 rpm. As soon as the supercharger boost cuts on at 3500 rpm, the car starts sputtering and trying to die. Suspecting a sensor or maf but not really sure. Engine light would come on but there are no codes stored when I go to read them. Have a new K&N airfilter but haven't changed anything else yet. Anyone have any ideas?

unijabnx2000

iTrader: (1)

the supercharger is always on

07cobaltguy

plugged cat.

blackbolt89

have you checked for vacuum leaks.

actually a few people were having problems with their blowers lifting off the intake manifold under boost.

have you checked all bolts and ****?

crazywhiteboy89

iTrader: (1)

try the crank potion sensor or the wires to the trottle body

SunburstSS

iTrader: (48)

hey budd i had the same problem just today !!! my car was sputtering when the boost kicked in, and the engine light was coming on and off...after two mins it went away i hooked uo my code reader and nothing came up !! i looked at the hose that plugs in the evap and it was cut all over the place and so are my vacum hoses, i fixed that one and now im fine however im replacing all the hoses and making sure my MAF sensor isn't lose tomorrow, i will keep u updated on that budd !!!

Anybody else wanna put their two cents in would be great !!!

Beaucanada68

Thanks for all the suggestions. I will check my hoses first (cheapest thing to fix) and then go from there. It gives me a start.

can anyone tell me where the MAF is located on a SC car?

SunburstSS

iTrader: (48)

its on ur air intake box u can take ur drivers side headlight and reach for it or u can take the splash sheild off that side " jack the car up and take the wheel off if u choose to then take all the screws and plugs " and u'l get to the MAF sensor "

Beaucanada68

Thanks for the help! Sounds like G.M. doesn't make anything easy. Changing the air filter was a pain in the butt.

SunburstSS

iTrader: (48)

"I know tell me about it lol i changed my air filter with a K&N one then after less than 2 weeks i swapped the whole intake it wasn't that much fun lol but hey clean ur MAF sensor with alcohol to get the crap off it " Thats a suggestion from ma buddy who's an engineer in the GMPP divison "

Beaucanada68

Thanks, just bought some MAF cleaner today. See how well it goes.

SunburstSS

iTrader: (48)

sweet dude lemme know how it goes

Beaucanada68

Well I sprayed the hell out of the Mass Air Flow Meter and put it back in the car. It improved the symptoms but didn't fix them. My thoughts are the Mass Air Flow Meter is bad or was only part of the problem. I hit 3500 RPM and the car starts pinging and lose complete power. I may have to spend the $70.00 for a new Mass Air Flow Meter. I had the Mass Air Flow code stored in the computer before I pulled it so my money is on that.

SunburstSS

iTrader: (48)

dayyyum...well if the thats the code that's coming up then try a new one...these thing donn go bad that ofter but i guess its ur bad luck man :x and im assuming you already checked for vaccum leaks? !

slowswap

MAF is shot it sounds like.

Beaucanada68

Thanks for all the help guys. Next week I will buy a new one and install it. I will let you all know if it takes care of the problem. Bad luck I guess. Advance Auto has the MAF for $71 so its not outrageously expensive but enough to hurt a little.

Beaucanada68

Pretty Crazy. Turns out my car kept throwing P0068 code for mass airflow. The Catalytic Converter was so clogged, it was choking the motor. Thank God there was a recall so I didn't have to pay for it. Only had 71k miles so beware if it happens to you. Car runs perfect now.

soundbalt

sorry to bring back an old thread but i am having the exact same problem. Cept when i clog at 3500 i am also reaching 25 psi boost... were you doing this and was it a bad maf and cat?