SR20DET Problem need serious help pls! (newbie here)

[Eras3r]

Hello guys ! ..im new in this forum and quite new in the SR20det field and in addition, i dont really have friends who does cars :S ..i just recently purchased the 180sx 91 model about 1 month ago and it has done 200283km today (was 198000km when i bought it).. i haven't done any mods to the car and i was informed by the previous owner that the car is stock but according to him the turbo was a disco potato T28? ..im not sure whether its the blacktop or the redtop version but as far as i read, it is similar..the car was running fine i guess (maybe because i liked the car >__< ) but there was some gas smell within the car which just recently popped up 2-3 weeks+ ago.

MAIN PROBLEM is : car is now doing a maximum of 50km mileage on quater tank from full tank without pulling boosts. (I dont think it's normal? :S ) Ever since i did a hill run instead of 80km on quater tank from full it is now down to 50 or less. My car also prones to stall on both normal roads and in the hills but at times it would come back on by itself rather than dropping the gears (idling is ok though and no black smoke on the exhaust only really thin white smokes)

Things i've checked : Fuel tub no leaks, the wires seems to be fine and i cant find the ECU ( could anyone direct me where it could be located? )

Things i've done : Changed new oil filter, new spark plugs , new oil change and battery water refilled.

Was also wondering how much could a stock SR20det go in a quater tank and what is the problem?. Could anyone kindly help and guide me? Thank you so much !!

[slider2828]

Welcome to Zilvia

What model car do you have first? sr20det is an engine, but the layout of the gas tanks are usually different between s13, s14, and s15.

After you fill up the gas tank, do you see any gas spillage in the rear? ECU is usually on the passenger side foot well and usually right near the door. You could go into diag mode... and see if any sensors are out....

Check for any boost or rubber charge pipe leakage.... these cars are old check for any broken hoses.

[Eras3r]

Thank you slider! ^^

My model would be a 1991 model 180sx. So i guess it would fit in as s13 >.< ..oh and i forgot to add that the previous owner also did an auto to manual conversion.

There was no spillage on when i filled the gas tank to full as well :S . Ah yes i found the ECU right after u told me where it is :D

Ahh okie i would try and look at it ! ..do i need to check on the injectors or other things as well? ..because the problem im having is similar to --->> http://zilvia.net/f/engine-tech/402758-sr20det-help.html ..except there was not much trouble pulling on power from 2nd gear and all the way up..other than that in the link im not pretty sure what he is talking about sorry :S ..