o2 Sensor- Stumbling on Acceleration

[machinehead]

remember all my car probs? well i changed teh o2 sensor but that didnt work and i gave up on it for a while. so like 3 weeks later im just chillin at a light, my car being its usual hesitant self. Then it turns green and i mash the pedal like i always do to get the thing to crawl, but to my suprise the car peels and goes and i almost smack into another car. the damn thing just fixed itself oneday outta nowhere, or does it take time for a new o2 sensor to work in? im so happy that it works now though, i just hope it doesnt revert to its old self. i do have a rattle sound when i accelarate, its most noticeable in the 2k-3k range. its a high pitch rattle like a nail in a coffee can or something

[nlzmo400r]

congrats man, nice to hear shes runnin strong again

[Cold_Zero]

get under the car and look for loose exhaust work. I use to have a rattle on my old car. Looked under the car and it was a muffler hanger hitting the muffler.

[machinehead]

thanks, will do! it doesnt seem to be shifting quick enough when i gun it, but besides that its doing great.

[nlzmo400r]

that mite just be from oldness too, how many miles do u have on her?

[Cold_Zero]

Could it be in your clutch or something in your transmission? I hope not! Something from your exhaust hanging down.

[machinehead]

126k miles on it. its slipping really bad in first gear, wont catch right. she's an auto. just dropped it off at aamco. i had to have a pro look at it cuz i need a direct answer, dont want to screw it up by driving it anymore. last 4 days have been slipping and i dont need to buy another car :p

[nlzmo400r]

i guess wait to see what they tell u, chances are, u need new clutch is al, couple hundred down the pooper

[Rev_D21]

Just cross your fingers that you don't need a flywheel cuz Altima flywheels don't like to be resurfaced from what I have heard.

[machinehead]

Well, it needs a rebuild. its like a 600$ fee to take it apart, clean it up, and find whats wrong then more money for parts and labor to reinstall. :/ i bought this car 2 months ago for 700 bux, no way im sinking over a grand into it. I'm gonna try and find a cheap used transmission and swap em. anyone know how hard transmission swaps are? :/

[Rev_D21]

Manual trannies are a piece of cake in any altima before 2002. If you got your tools right and good work space you should be up and running in about 4 hours.

[nlzmo400r]

what do u mean the flywheels dont like to be resurfaced, what tends to happpen if you do?? i havent heard this before

[machinehead]

do i need to hoist the engine to do this, plz say no

[Rev_D21]

Not at all. Just use a chain to keep the engine from falling out, drop the transmission from the bottom of the car. Altima flywheels are thin and resurfacing may cause it to warp.

[machinehead]

hold on, why would the engine fall out? do i have to undo the mounts or something? transmission bolts better not be tight, im tired.

[Rev_D21]

Well, Im looking at it from a safety point of view. Plus once the transmission is out there will be a lot of stress on the other mounts which could damage them. I would go the extra mile and find a way to hold the engine in place while the transmission is out of the car.

[nlzmo400r]

true, less strain on the car the better, and besides having an engine fall on ur head would probably ruin ur weeekend

[machinehead]

time to find me a used one :/

[nlzmo400r]

wow, that sucks, but hey, could be worse

[machinehead]

i just hate having to spend all the money i earn up on cars or repairs or insurance

[nlzmo400r]

i love spending my money on cars, but not when i HAVE to, only when i want to, in the past month - 25k tune up $11o, new dash (thanks lil bro) $9o, and next month, new front bumper- $586.82, o yaaaaaayyy

[machinehead]

what happened to your bumper? ya i dont mind spending money on stuff i wanna buy but this unexpected crap sux.

[nlzmo400r]

i lost control of her at about 11o in the rain (i know, stupid), and hit a concrete barrier, but MAN was i LUCKY AS HELL!!!< didnt touch a headlight or nothin, JUST the bumper, so im gonna get a new one

[KoTT]

Well, it needs a rebuild. its like a 600$ fee to take it apart, clean it up, and find whats wrong then more money for parts and labor to reinstall. :/ i bought this car 2 months ago for 700 bux, no way im sinking over a grand into it. I'm gonna try and find a cheap used transmission and swap em. anyone know how hard transmission swaps are? :/

you know, there is one thing really wrong with your transmission. its automatic. mine got the same problem... and yes, it does not shift right. and gears dont catch right between 1st and 2nd. there is only one good way to fix it - get a new manual transmission, and its gonna be only like 400$ or around that.

as for your bumper, either hit a junk yard or ebay. dont buy new ones... WAY too expensive.