Car is going in and out of power

[NissanKen240sx]

Alright I have a 1993 Nissan 240sx 5 speed that is having a problem where i will be driving and it will have power than seems like it cuts out gas or something and then lacks power than I have to put it basically to the floor for it to go back to getting power but if I was to just cruise it will just shake back and forth till it hits about over 3rpms then I will get power back so unless Im beeting the **** out of it, it wont run good. then if i have it in nuetral and coming to a stop it will basically almost everytime wants to stall out but I will just rev it up before it does stall out. Sometimes my car won't start, it will be turning over trying to start but my buddy showed me that I have to pull my EGI relays out then start my car and quick shove the relays back in so it wont stall out then it will run but still has the same problem of going in and out of power so if anyone has a clue what could be wrong post me somthing PLEASE!!!!!!!!!!!!!!!

[VMP]

well first cover the basics....

clean the throtle body and throtle plate (in tb) almost spotless with tb cleaner or i hear brake clean works well also (just be carefull not to spray too too much, you might flood the engine, a little much'll just burn up durring combustion. just rev the **** out of it after cleaning if it's hard to start.

if you suspect the fuel pump... rip out the back seat and get in there w a voltmeter and start probin' ****. (but it doesn't sound like the fuel pump)

check out your air filter.. if that **** is nasty, black, has bird feathers or insects lodged in it.... replace it. (if you have a cold air intake, clean the piping on the inside as well if it's oily from blow-by or too much oil on the filter). you need air flow so your car can breathe.. if there's restriction there... it would be the same as if someone were choking you.

if the MAF is dirty; clean it. MAF cleaner works just dandy for its purpose.

check your system vaccum. i'm pretty sure you don't own a vaccum gauge, as most people generaly don't, pop off the vaccum hose going to the brake booster (behind brake master cylinder). put your thumb at the end of the hose and make sure it's suckin better than your gf. (while you do this- engine must be running). if it feels strong then you're good.. if it feels really weak, then inspect all hoses for possible leaks and cracks.

injector time-- how many miles are on your engine? over 100k? you can either run an injector cleaner thru the fuel line or throw in an additive in the gas tank to clean them... i don't use additives personally, but i hear from multiple users that STP makes a good one.

if you're still havin trouble w your engine, check your timing and whatnot.. a tune-up could help.

also kinda sounds like your battery got disconnected while you're driving (due to your engine feeling like it's gonna cut out coming to a stop). but i'm sure that's not it however just to be safe, check the voltage of your battery and alternator when car is off and while car is running. batt=12.5V not running. batt=13.5-14.5V while running. check voltage at alternator from the power B+ terminal (usually covered w a gray or red piece of plastic or rubber) and the ground (which it the alternator housing)... should be the same as the voltage you checked at the battery.. also if you're terminals are corroded.. please, for the better of the car and for humanity as a whole, clean them. just use baking soda and water and scrub scrub scrub w a wire brush, if they're bad, replace the terminal and/or cable. your car needs electricity like you need blood.

(sorry if i'm making you sound like a noob. i just have no clue who you are and what you already know )

gl!

[-RJ-]

. put your thumb at the end of the hose and make sure it's suckin better than your gf.

lol

[NissanKen240sx]

Thanks man, I have done a tune up, already have stuck fuel injecter cleaner in it, checked vacumm lines found one cracked and fixed it, and think Im gonna check my timing as well, It could be one of my injectors cause it was acting up earlier last year so I might get that replaced soon but yea Ill check out the other things u were explaining but yea Ill send another post if I cant figure it out

[VMP]

Thanks man, I have done a tune up, already have stuck fuel injecter cleaner in it, checked vacumm lines found one cracked and fixed it, and think Im gonna check my timing as well, It could be one of my injectors cause it was acting up earlier last year so I might get that replaced soon but yea Ill check out the other things u were explaining but yea Ill send another post if I cant figure it out

alright gl.... btw, i'm not a man :-p

[VMP]

Thanks man, I have done a tune up, already have stuck fuel injecter cleaner in it, checked vacumm lines found one cracked and fixed it, and think Im gonna check my timing as well, It could be one of my injectors cause it was acting up earlier last year so I might get that replaced soon but yea Ill check out the other things u were explaining but yea Ill send another post if I cant figure it out

oh also check your ignition system... primary and secondary.. and the internals of your distributor... perhaps the switch is worn out inside and not getting that great of a contact anymore.

and it would help to add another large ground wire from the block to the frame... you never know...

[NissanKen240sx]

would you happen to know if the 240sx has a EGR temp sensor or does it just have the EGR system and all that because I looked online and seen the altima does but its totally set up different then a 240 and I cant find it on my car so if you know the location that would be great but I think im gonna get a service manual tommorow