Give Gas, she stalls....help

Bassbreaker · 11-09-2008, 06:38 PM

It seems now that I have my CAI installed when I give it gas it stalls or wants to stall...it doesn't make sense. I know My Maf sensor is no good and I unplugged it, but why is the car stalling when I give it gas? Like reving it over 4000 rpm's. This is frustrating. I thougth it was the kinks in the hoses but I fixed that and now it still stalls....any help would be greatly appreciated. Thanks in advance

95max327 · 11-09-2008, 06:43 PM

are you sure its not the maf? maybe not enough air and too much fuel? what other performance parts do you have? any fuel upgrades

Bassbreaker · 11-09-2008, 06:45 PM

Quote:

Originally Posted by 95max327

are you sure its not the maf? maybe not enough air and too much fuel? what other performance parts do you have? any fuel upgrades

i'm quite sure it isn't the maf cause I have it unplugged, and the only performance parts I have it the intake. I know there wouldn't be much power when the maf is unplugged, but when i give it gas it shouldn't stall...

Bassbreaker · 11-09-2008, 06:47 PM

Quote:

Originally Posted by Bassbreaker

It seems now that I have my CAI installed when I give it gas it stalls or wants to stall...it doesn't make sense. I know My Maf sensor is no good and I unplugged it, but why is the car stalling when I give it gas? Like reving it over 4000 rpm's. This is frustrating. I thougth it was the kinks in the hoses but I fixed that and now it still stalls....any help would be greatly appreciated. Thanks in advance

also, when it do rev up a bit, there seems to be a backfireing sound of air coming back through the intake like a puffing sound...this is driving me...

Bassbreaker · 11-09-2008, 06:55 PM

Quote:

Originally Posted by Bassbreaker

also, when it do rev up a bit, there seems to be a backfireing sound of air coming back through the intake like a puffing sound...this is driving me...

I don't know if this will help in any conclusions but yesterday when i tried it with the maf plugged in i gave it gas and i heard a "pop" sound. An injector wouldn't make a pop if it blew would it?

95max327 · 11-09-2008, 08:12 PM

hmm.. sounds like an air/fuel problem.. i had a s/c thunderbird and without my maf it would backfire out of the exhaust when i would rev it high in neutral and let off.. no maf would make the idle ****ty sometimes as well. i dont think an injector would make a popping sound. when did this problem start occuring? before you unpluged the maf, a little while after, long time after? does it misfire? at high R's in gear does it seem to bogg out or skip?

95max327 · 11-09-2008, 08:15 PM

backfiring is making me think it has something to do with too much fuel.. im assuming check engine light is on because the maf.. but have you scanned the car to see what other codes it may have thrown?

Feldman · 11-09-2008, 08:29 PM

how about picking up a new maf since you already need one and see if that solves the problem

Snypa · 11-09-2008, 09:35 PM

i advise the same thing^^^

K.Hall · 11-09-2008, 10:57 PM

I had the same exact problem and once i bought a new MAF sensor that problem went away.

Bassbreaker · 11-10-2008, 04:56 AM

Quote:

Originally Posted by K.Hall

I had the same exact problem and once i bought a new MAF sensor that problem went away.

Ok..I have another Maf off of a GXE I own and I can try that, but, it only started happening after the maf went really. I hooked up the CAI, busted the MAF, left it unplugged and it idled smoothly and she'll idle smoothly right now, but when i give it gas it'll sputter a bit and then stall. And when it do rev up for me, it doesn't rev higher than say 4000 or so and then it sounds like air is coming (puffing sound) back through the intake or somewhere in that area...

Bassbreaker · 11-10-2008, 05:04 AM

also, I forgot to mention...there is no CEL, doesn't misfire really..it'll either rev up and make the puffing sound, or stall as soon as I put the gas down. Even if the maf IS bad, it should still be able to run shouldn't it? Maybe the CAI is giving to much AIR?

Madmax66 · 11-10-2008, 05:26 AM

I just F'd my MAF and it acts VERY similarly however, it does not stall. I only get to about 2500 RPM before she sputters like mad. I AM getting 0304 code for KS which I had just replaced a few months ago....hoping a new MAF will cure.

Hopefully, the other MAF helps!

Bassbreaker · 11-10-2008, 05:37 AM

Quote:

Originally Posted by Madmax66

I just F'd my MAF and it acts VERY similarly however, it does not stall. I only get to about 2500 RPM before she sputters like mad. I AM getting 0304 code for KS which I had just replaced a few months ago....hoping a new MAF will cure.

Hopefully, the other MAF helps!

thanks, i'll try it when i get home, but I don't know what to do if that isn't the problem...

njmaxseltd · 11-10-2008, 06:09 AM

Cliff notes for this thread:

Guy installs an intake, the maf goes bad, car runs poorly, verified the maf is bad, car still runs like crap, asked the org what to do knowing the maf is bad, car still runs like crap.

Seriously.... CHANGE THE MASS AIR FLOW SENSOR!

You were better off with the stock intake anyway, it gives the best throttle response.

Bassbreaker · 11-10-2008, 06:18 AM

Quote:

Originally Posted by njmaxseltd

Cliff notes for this thread:

Guy installs an intake, the maf goes bad, car runs poorly, verified the maf is bad, car still runs like crap, asked the org what to do knowing the maf is bad, car still runs like crap.

Seriously.... CHANGE THE MASS AIR FLOW SENSOR!

You were better off with the stock intake anyway, it gives the best throttle response.

i said I would change it when i got home.....i've also read posts about just cleaning it...maybe that would be the case...also, is a stock CAI gives the best throttle response...then why would people install a CAI

gold96 · 11-10-2008, 07:30 AM

Definatly the MAF. But try cleaning it first. I wasted money replacing it with an aftermarket one. I cleaned the original one, put it back in, and it ran perfectly.

Bassbreaker · 11-10-2008, 07:35 AM

Quote:

Originally Posted by gold96

Definatly the MAF. But try cleaning it first. I wasted money replacing it with an aftermarket one. I cleaned the original one, put it back in, and it ran perfectly.

will do, thnaks, btw, would I be able to get that maf cleaner at NAPA? I assume it only costs like 6 or 7 bucks?

Do you only just spray the plugs(male and female)?

I assume you do not spray at the resistor?

Thanks

Snypa · 11-10-2008, 07:57 AM

most autoparts store.^^

njmaxseltd · 11-10-2008, 08:51 AM

Quote:

Originally Posted by Bassbreaker

also, is a stock intake gives the best throttle response...then why would people install a CAI

Looks and sound.

95max327 · 11-10-2008, 10:41 AM

i dont think the stock intake is the best though... there seems to be alot of restrictions. wouldnt a stillen or nismo be the best intake?

but to stay on topic.. try a diffrent maf, either way you need one right? if its not that then see what it does from there, im sure the maf will deffinatly do something.

Bassbreaker · 11-10-2008, 11:11 AM

Quote:

Originally Posted by 95max327

i dont think the stock intake is the best though... there seems to be alot of restrictions. wouldnt a stillen or nismo be the best intake?

but to stay on topic.. try a diffrent maf, either way you need one right? if its not that then see what it does from there, im sure the maf will deffinatly do something.

yeah, you're right. In the least i'm hoping it will stay going when I plug the new maf in...i'll clean both of them too and see if that makes a difference

modenaf1 · 11-10-2008, 05:02 PM

On all cars I have worked on that I have accidentally left the MAF unplugged, they all usually sputter and/or stall when I give it gas. It makes sense, the engine can't detect that more air is going in, thus it can't appropriately control the mixture. The more gas you give it, the more you screw up the mixture thus the more likely you will stall it. I assume modern cars like the Maxima have some sort of an a/f map so it can generally know what to do based on the TPS, but it may not be accurate enough.

Bassbreaker · 11-10-2008, 08:35 PM

Quote:

Originally Posted by modenaf1

On all cars I have worked on that I have accidentally left the MAF unplugged, they all usually sputter and/or stall when I give it gas. It makes sense, the engine can't detect that more air is going in, thus it can't appropriately control the mixture. The more gas you give it, the more you screw up the mixture thus the more likely you will stall it. I assume modern cars like the Maxima have some sort of an a/f map so it can generally know what to do based on the TPS, but it may not be accurate enough.

ahh..i see...well i'm going to clean and put on the new maf tomorrow morning...i'll let you know how it goes.

Just out of curiosity ( off topic ) does anyone know about how long it would take to drop a 5 speed out of a car...i have th step by step instructioons...but a time frame would be nice so I can do it before sundown

fishforlife2007 · 11-10-2008, 08:51 PM

u might also check for vaccum leaks..

maxkid123 · 11-10-2008, 09:41 PM

its the maf..get a new one.

*KRRZ350* · 11-10-2008, 11:21 PM

check to make sure you didn't switch the maf and boost sensor connectors around, there the only connectors that are the same on the whole damn car and u probably removed both during the intake install.

Bassbreaker · 11-11-2008, 12:33 PM

Quote:

Originally Posted by KRRZ350

check to make sure you didn't switch the maf and boost sensor connectors around, there the only connectors that are the same on the whole damn car and u probably removed both during the intake install.

i only unplugged 2 plugs when i installed the intake...the IAT and the MAF, and they are not alike...i'll try and post pics