Car Runs Funny? Help?

[BreedOfSpawn]

Im driving coming to a stop sometimes the rpms will drop from 750 to 0 for a split second and then take off, sometimes during idle the when I am not moving anywhere the rpms are around 900+ then they slowly drop to about 850. Sometimes which is when the car is all warmed up and I am sitting at a red light the rpms will hit 750 which is fine then they will drop to 500 then up to 800 and wiggle back and forth like that for a while. When the rpms drop to 0 the car actually shuts off for a split second, like when you have the keys in the ignition all the lights turn on like the check engine oil seat belt etc etc then they turn back off and the rpms go back up to 650 - 750 and fluctuate back and forth again. Also when I am cruising in the car it bounces... almost like its jumping underneith me or like someones hitting the gas on and off really fast this happens in every gear from 1st to 5th.

Any help? Start a new job on monday dont need to worry about not being able to get there cuz this is stressing me out now.

[S13FASTBACKSR]

how are you running your bov? atmospheric or recirculated? also try cleaning your iacv with carb cleaner

[BreedOfSpawn]

how are you running your bov? atmospheric or recirculated?

Sorry that part made no sence to me I am still a n00b when it comes to these things but slowly learning. Im considering cleaning the Iacv the only problem is getting access to it... I need to remove the entire throttle body to get under it to the iacv... and for a guy who doesnt know to much... I might be a little way over my head. But Im slowly getting there.

Last time I was having a problem like this, I cleaned the throttle body... and it started working fine... and now a month later Im back to square 1.

[S13FASTBACKSR]

how are you running your bov? atmospheric or recirculated?

first of all ignore that i forgot this was the ka forum not the rwd sr forum..i was thinking you were boosting..by any chance are you? then this question would matter. (now dont get me wrong any ka guys reading this i know that boosting a ka is definately possible and sexy ..but i dont think BreedOfSpawn is boostin thats why i say this.)

back to the question..all you have to do is take the screw out of you iacv to clean it..the idle adjustment screw..take that out spray carb cleaner in there spray the inside with an air compressor use more carb cleaner etc. etc..do this over and over..and yes you could try cleaning the TB again as well.

[BreedOfSpawn]

No sir I am not boosting the car, I forgot to mention its a completly stock 93 bought it about 2 months ago. been having small problems on and off but im learning as i go along, Now can i get to the iacv from underneath the car would that be easier? cuz the iacv is located just under the throttle body and i would have to remove it to access the thing im just looking at an easier method.

[S13FASTBACKSR]

i cant recall because its been awhile since i have looked at the iacv on the ka but isnt it under the intake runners? between the 3rd and 4th runners? if its not that doesnt matter because this part has a screw on it to adjust the idle and the screw has to be accessible or other wise you would not be able to adjust the idle...so just take the screw out and clean it with a lot of carb cleaner and use an air compressor to hit air into the hole to loosen up carbon..you can also put a piece of wood on the iacv and tap that wood with a hammer to knock the carbon loose..do this repeatedly..another thing to check is the gap of your spark plugs.

[sumoboi7]

hey im new to nico to but ive had the problem you are having..... what had happened was the coolant sensor was dirty and coroded so i ended up having to order a new one and having it put in. what happens is that when the sensor is not reading properly it may think that the engine is running to cold or to hot and there fore send more or less gas then needed so yours is probably thinking that your car is running to hot so it is sending less gas therefore shutting your car off. thisis just my guess at whats happening but my car did this to and after that it was all fine... so i hope you figure it out..

[S13FASTBACKSR]

Also when I am cruising in the car it bounces... almost like its jumping underneith me or like someones hitting the gas on and off really fast this happens in every gear from 1st to 5th.

what do you mean it bounces? sort of hesitates and misfires? or bogs forward..are you running rich at all? if you arent running rich and your car feels like it does not have much power then it is possible that you are seeing fuel cut because of a bad temp. sensor but i dont think thats the problem in your case..try cleaning your iacv and your throttle body also make sure the gap on your spark plugs are correct

[BreedOfSpawn]

How would i check the codes I hear you can do it on your own in the 240's dont need to hook up a computer to them so I can see if a sensor code comes up.

And in answer to your question... the car bogs forwards. Its like a jerking...

[S13FASTBACKSR]

hows your timing? also like i said check your iacv, clean it..check your tps voltage clean your TB and you may also have a bad ecu itself..to see if your ecu is bad turn the key on and you will see a l.e.d. come on (its on the back of the ecu) then start the engine if the l.e.d. stays on you have a bad ecu..if it goes off your fine..to check for codes you turn the key on and turn the little screw by the l.e.d. to the right (fully clockwise) hold for atleast 2 seconds and turn fully counterclockwise..then you will see a series of flashes..they will be followed by a pause..then more flashes followed by a very very quick pause..say you get 3 flashes with pauses in between then after the 4th flash you have a very quick pause then another flash then another quick pause then flash that is a 33..see what i mean?

[BreedOfSpawn]

I am sure my timing is a wee bit off... just before I got the car the timing chain was replaced in it and the guy told me that it seemed a little off but he didnt keep the car long enough to really check it himself there was a bit of a mishap when i purchased the car attually and wasnt able to buy it from the original owner some punk kid beat me to it but his dad flipped out and tried to return the car. Long story short I got the car cheaper then it was going for but I had a suspision that the kid was booting this thing all over the place. Because when I test drove it from the original owner it ran alot better then when i picked it up from the kid he had the for about a week. His friends were making comments like this thing will destroy most cars on the road and we know... so i figure they were fooling with it alot. Yes but let me know if its the timing chain being a wee bit off would be the problem.

[S13FASTBACKSR]

it doesnt sound like a timing chain problem but yes if the timing chain is even one single tooth off you will have problems..do all the things i said though and let us know what happens