Merged threads for those helping 240sxbobbis!

[240sxbobbis]

ok so i got my motor to start up and run holds idle nicely at 720 to be precily but when i give it gas i hit fuel cut right at 3000 rpm dont know what it could be does anyone have any bright ideas that would be good . other than that the motor sounds good but idles like so ill like to know all the reasons this could be . i dont have an standalone its a stock ecu ...........

[oversteer180]

maf, maf wiring, not using shielded wire on maf, timing?

[c-rad]

The first thing you should do is learn not to start every thread with !!!!!!!!!!!!!!!!!!!!!!

Second, you could just add to the threads you already started.

Third, check for error codes on the ECU.

[240sxbobbis]

thanks crad i will keep that in mind . no the maf is wiried correctly

[float_6969]

This sounds very much like a MAFS problem. The first thing I would check is the codes on the ecu.

THIS IS FOR EVERYONE: IF YOUR CA IS HAVING A PROBLEM, CHECK THE CODES BEFORE YOU POST ABOUT IT!!!!

[240sxbobbis]

thanks float i will check it today when i get off work and ill let u know whats going on

[240sxbobbis]

ok i didnt wire up my knock sensor could this be the reason why it would do that . i dont see the wire for it but i have a plug one that came on the motor when i got it . also my batt isnt holding any charge bad batt or altenator?

is there anyone on here that had this problem before what did you/they do about it let me know thanks ....

[boost_boy]

ok i didnt wire up my knock sensor could this be the reason why it would do that . i dont see the wire for it but i have a plug one that came on the motor when i got it . also my batt isnt holding any charge bad batt or altenator?

is there anyone on here that had this problem before what did you/they do about it let me know thanks ....

You didn't hook-up your alternator harness correctly. Go through that harness and make sure everything is plugged-up.

Dee

[float_6969]

You need to get the charging problem sorted out before you move onto anything else. The lack of knock sensor shouldn't cause the symptom you have, but it's hard to tell if your car isn't charging properly, as that can cause all sorts of problems.

[240sxbobbis]

ok i checked the altenator its wired properly . so now it brings me to the battery its bad so im changing that today im getting another maf sensor then ill se if that answers all my problems .

[float_6969]

Keep us posted.

[240sxbobbis]

sure man no problem

[NISMOdrift240]

ok so i got my motor to start up and run holds idle nicely at 720 to be precily but when i give it gas i hit fuel cut right at 3000 rpm dont know what it could be does anyone have any bright ideas that would be good . other than that the motor sounds good but idles like so ill like to know all the reasons this could be . i dont have an standalone its a stock ecu ...........

Check for unplugged hoses that connect to your intake tube after your MAF. When I pulled my intake out for room to work, I forgot to hook the two hoses (KADE) back on the intake. The MAF reads one airflow, but the air going in is different. It would idle perfect, but as soon as I stepped on the gas it died.

[240sxbobbis]

oooooooo i c thanks man

[NISMOdrift240]

oooooooo i c thanks man

let me know if that works. good luck!

[240sxbobbis]

no problemill check it out and ill keep you posted along with everyone else

[240sxbobbis]

ok i noticed that the ca18det uses 4 wires for the maf and the ka24de uses 3wire to the maf am i supposed to wire the 4 wires into 3wires to work with the ka24de maf

[240sxbobbis]

ok i am just wondering if i were supposed to do something . ok this is what it is i noticed that the stock ka24de maf wiring uses 3wires and the wire coming off the ca18det harness has four wires on it am i supposed to make the 4 wires into 3 like the one oin the ka harness or it should work like that what do those four wires mean, versus the 3 on the ka . are you supposed to wire them onto three or leave them as is .. i dont know thats why im asking this ..

[damesta]

For future reference, please search, its been covered plenty of times. Here:

zerothread?id=65531

BTW, I'm assuming you mean your using a ka24e MAFS, because the ka24de MAFS will not work.

[damesta]

DOHC ka mafs will not work, you'll need to get an SOHC ka maf.

[240sxbobbis]

thanks man that was helpful alot . quick question what do you have on yours which maf

[240sxbobbis]

thank you damestra i really didnt know thats why i asked i think im beginning to become a post rat or something . ill get one today and ill let you know how it turns out ok thank again ill keep you and everyone else posted about my almost done project. im only one maf away everyone to have my pearl white 180sx in construction with my f***ed up passanger door .

[NISMOdrift240]

DOHC ka mafs will not work, you'll need to get an SOHC ka maf.

Sounds like he's trying to use a SOHC MAF. Arent the DE MAFs 4 wire, and the E 3? All I know is I got a SOHC MAF for my DE on accident, and the wires are different so now I have a SOHC maf lying around.

Forgive me if I am way off base, but my Rockstar hasnt kicked in this morning.

Anyways, good luck. Been there... just one MAF away!

[240sxbobbis]

no the ka24de uses three wires on the maf and the ka24e has four wires this is what i gathered in about 10 minutes which one are you using by the way nismodrift240

[NISMOdrift240]

Wow... need caffiene faster....

Using my fried DE Maf, new DE maf should be here today. SOHC maf is chilling in my garage.

[damesta]

SOHC KA

[240sxbobbis]

oh ok did you have to modify it in any way

[240sxbobbis]

so what did you do to the dohc maf did you modify it in any way do u have a ca

[NISMOdrift240]

No no, sorry, I guess I'm quite vague.

I'm bone stock KA for now. Building a spare KADE right now for T in my garage. I had a bad DE MAF when I bought the car, and was a retard and bought the wrong one.

[NISMOdrift240]

I know you can tweak the MAF signal using a SAFC2 tho.