need help, car dying again

[nissan_240sx]

Originally Posted by drftk1d

what is a AIV?

air intake valve?

The aiv is located to the left of your power steering resivour. its that little black box. its job is to bring "unburnt" exhaust gases back into the intake system. Needs to be cleaned once in awhile, i cleaned mine a few months back with carb cleaner, and it was black as hell. lol
peace

[nissan_240sx]

oh yea, AIV stands for air intake valve
my bad

[theboy]

MY car had the exact same issues, and this is what i did to it. First check the injectors to make sure they are all working right. IF they are. whith the car running more the wires connected to the top of the injectors. The mechanic that i deal with told me that since the injectors on this car tend to go bad offen. the wires to the injector get loose. when people take the wires on and off to check the injectors. I know this might sound dumb. but for my car it worked. It would idle rough some time and sometimes it would be verry steady. Also when i was taking out of first gear, it felt like the manual trans was going or clutch. It would back fire at points. what i did was cut the injector connector wires from another car and just twisted them together. Again it is really easy to check. move the wires arround and if the changes the engines idle, you might have those connectors loose. after the wires were replaced the car drives great. You wount loose enything if you test it out. Let me know if it helps or not.

[monooxide]

Before hacking away at your harness make sure the plugs are clean and have no corrosive build up.

[DrRifter-X]

i just changed the maf and the tps sensor today. it stopped struggling right before the shift point and no more smoke. but when i "test" drove it, it was dropping down to 200-300 rpm when i was letting the car roll. a couple times it just died when i was rolling at 45 mph. then it started to idle at 900 rpm when i was stopped at a sign. and sometimes it just dropped back down to 200-300 rpm.

i just got some car cleaner and sprayed the iav's black box and the metal thing connected to it by the hoses. i didnt take it out or anything. still trying to find a scrub so i can clean it with. what do you mean by cleaning the black box?

[Amad18]

I have the same problem with my car..the smoke is white and comes from the exhaust...

[nissan_240sx]

Originally Posted by DrRifter-X

i just changed the maf and the tps sensor today. it stopped struggling right before the shift point and no more smoke. but when i "test" drove it, it was dropping down to 200-300 rpm when i was letting the car roll. a couple times it just died when i was rolling at 45 mph. then it started to idle at 900 rpm when i was stopped at a sign. and sometimes it just dropped back down to 200-300 rpm.

i just got some car cleaner and sprayed the iav's black box and the metal thing connected to it by the hoses. i didnt take it out or anything. still trying to find a scrub so i can clean it with. what do you mean by cleaning the black box?

you have to take the AIV apart, and clean the inside. i think someone posted something about cleaning it, read this thread again. if you cant find it go to www.240sx.org click on FAQS, look for AIV servicing.
you used car cleaner? or was that a typo.
i used carb cleaner, tooth brush, and a rag to wipe.
good luck

[xcusememisswyn]

check all the rubber hoses to you intake to, if one isnt plugged up right a lot can go wrong

[slideways...]

Originally Posted by klone420

put a resistor in the MAF sensor(the part with the wires)and run the car if its fine u know what the problem is. also tell us what color the smoke is.

no dont do this

[DrRifter-X]

Yea, a typo. I bought some carb cleaner. I read some people cleaned the black box. I was like wtf? Does cleaning the exterior help or something? Lol. Ill spray some carb cleaner on that metal piece that's right below it and scrub it clean then.