Need some help...

[ca240sxcoupe]

http://video.tinypic.com/player.php?v=4tkb42a

alright ladies......heres my issues....

so ive hooked up my knock sensor with shielded wire into the right wire on the ecu..got my oil return unkinked with some new silicone earls line, my maf wired up....only things i dont have hooked up is the downpipe back and my tach.....my problem is that the engine will not rev with the maf hooked up and im not sure what to do, checked the timing and its perfect....so im not sure what else to do look at the video if possible and let me know what you think...sorry about the night video...just last effort here.....let me know

upgrades: sr-t25, ssac bottom mount manifold, faze boost gauge....thats anything out of the ordinary
Modified by ca240sxcoupe at 8:26 PM 6/13/2007

[ca240sxcoupe]

edit: the only way that i can get the engine to rev at all is to flutter the gas because if i hold it down the engine just dies.......please anybody....

[bone_stock_240]

Maybe you are running really rich?

[ca18detgabby]

my ca did that.......... one of the vac lines wasnt sealed properly and it spuddered like that.

probably a vac problem.

[ca18det240hatch]

sounds like a bad maf connection. Mine just did the same thing yesterday afternoon, turned out that a pin in my maf connector got a bit corroded. Works fine now...but it would do the same thing, soon as you hit the throttle, die, if you pump it, would rev a bit.

i bet you get a code for no maf from the ecu

check for codes

[ragenasian]

Mine did the same thing after a hard down shift. I found out that the large intake hose had a crack in it. Would barely run, full gas would kill it but it would idle fine. New hose no problems.

[ca240sxcoupe]

alright thanks guys im going to go and check everything i can in the next 2 hours then ill let you know what i find out.....heres for hoping

[ca240sxcoupe]

well i checked the ecu for codes and well.....i got a code 55 that means everything is ok right???? im stumped im going to post up some pics and links to some more videos i took today...

[ca240sxcoupe]

[teddy]

What happens when you start the car up with the maf unplugged?

[ca18det240hatch]

that looks like a ka24de maf, if it is, wont work, and will prolly fry your ecu

thats guaranteed your problem. Change to a single cam ka24e maf or ATLEAST a ca18de maf.

[ca240sxcoupe]

the car will start with or without the maf, its a little hard to get it to start either way, like it hesitates but will eventually run and idle, yet as soon as you think it will be ok to give the engine a little gas it will die under the slightest amount of gas given, the only way that i have been able to even rev the engine is to shutter the gas....as in press release press a little more release press more then release....other then that as soon as you touch the pedal it will die no reving or anything just die like it doesnt have any vacuum pressure or something.....ive checked the lines for vaccuum leaks and found two one from the big black hose that runs from the intercooler piping to the throttle body and another by the little hose that runs to the idler air control system thingy under the throttle body. i have since fixed both but still cannot rev the engine...

my maf came with the engine set and i think it is a ca18det's maf....and even if the maf were the problem wouldnt the ecu throw a code for it? i will try to post a video as soon as my camera charges so i can upload them....

[ca240sxcoupe]

http://video.tinypic.com/player.php?v=4p9twds

http://video.tinypic.com/player.php?v=61oz5kw

[ca18det240hatch]

how many pins on that maf? on the connector.

i swear the yellow sticker is a ka24de one, but im not 100%

im almost SURE that is the wrong maf, i had the same problem when i was trying to hook up a maf that wont work with my ecu.

http://cgi.ebay.com/ebaymotors...ZWD1V

heres a ka24de maf on ebay, looks EXACTLY the same.

my ca18det maf doesnt have a yellow sticker.

EDIT: Im 99.9% sure thats the wrong maf, get a ka24e maf and then wire it like this

white on ka24e pigtail------------green/black stripe on ca harnesssolid black on ka24e pigtail----------------solid black on ca harnessblack/white stripe on ka24e pigtail----------------black/white stripe on ca harness

the green/yellow stripe doesnt need to go anywhere, not sure what it does.

you may have fried part of your ecu tho. when i hooked up a ka24de maf to my MINES ecu, i messed with it for days till i found out it wouldnt work. When i put a ka24e maf on it, it still wouldnt work. Turns out i wrecked my computer with the ka24de maf somehow. Maybe i shorted a wire, not sure.

[ilovecoupes]

It looks like you might have swithced up the plug for temp sensor and the plug for the IACV My plug for the IACV is green, not red. not sure if that helps at all.thanks david for your picture

[ca240sxcoupe]

The maf has a 4 pins and if the maf were a ka and it did fry my ecu, why would the ecu still show nothing wrong with the maf? Is it because that area of the ecu is fried?

If I had switched the temp and IACV, wouldn't my car not register a temp on the gauge cluster?

I have a ka24e maf that I will try to hook up and I will let you know what happens. Just in case, does anyone have an extra ecu they'd be willing to sell me?

[Reno]

Hey Thx This is my wallpaper Now

[progman]

The coolant sensor with two pins connects to the CPU directly. The Temp gauge on the dash is connected to a temp sensor adjacent to the one for the ECU but it is a single pin.

I'm having a very similar problem with my car. But it's not as bad. I have about 10 vacuum on my gauge (same gauge as yours) and I can rev my motor a little. But if i push the gas in 30% or up and let go it will stall like yours.

My MAF worked fine before. I changed it out with a Z32 MAF same problem. I checked for vacuum leaks. I checked my timing. My ECU shows the error code for the knock sensor and thats all (i haven't hooked it up yet). I'm running rich. And my car runs better without one of the vacuum lines hooked up. (it idles at about 500rpm with it hooked up and about 800 without it).

Can you rev up to about 2000 without the maf hooked up? If so then I think something is wrong with your MAF.

[ca18det240hatch]

you should NOT be able to mix up the wires for the FICD connector, the IAC connector and the temp sensors, they are all different colors and in different areas

the one for your engine coolant sensor is RED, the one for the FICD is blue/grey, the one for the IAC should be yellow/green. All of the wires should line up to only one plug and look correct, not stretched/balled up.

i guarantee you thats not a ca maf, as im looking at one right now and it doesnt have the metal box with the yellow sticker, its straight black, plastic box. Should look like a ka single cam maf only with 4 pins instead of 3

your computer may not report a maf missing, because really its not missing, it just WONT work for that application because the voltages are all wrong. your ecu see's a maf, just wont work right.

use the KA single cam maf the way i said to wire it and i guarantee your car will run fine, ive done it a million times.

PS: yes you do have your wires messed up, i just looked at the picture again. the red plug, as i stated above, goes to the coolant temperature sensor, the one beside the engine temperature sensor.

[ca240sxcoupe]

hey guys thanks im looking through all of my wiring and all that s@#t and yeah i wasnt paying enough attention to the connectors when i hooked them up right now im fixing some exhaust problems that ive been putting off so until tomorrow ill have to wait and hope that with all the stuff you guys are telling me that this thing will be on the road tomorrow....not legal with my spider webbed windshield being replaced....thanks older brothers....but ill keep you guys posted on it and as soon as i get it running right i will post a link to another video to let you guys see how it goes........

and hey RENO:Hey Thx This is my wallpaper Now

thats the best compliment ive gotten in a long time on my car so until tomorrow thanks so much ladies

[Reno]

[ca240sxcoupe]

hey guys........all i can say is holy s@#t this motor is awesome....sounds mean and man the power.....much much much much better then my slowly dying ka24e...now to continue...i need to get it tuned...idles high and runs a lil rich but man the difference...i feel so dumb that it took this long to find out what was wrong....well ill get it tuned and dynoed and let everyone see a video of how it is now.....also i just remebered i didnt change the oil pan gasket.....damn that sucks couple drops now and again but should hold until i get it changed......

[ca240sxcoupe]

sorry guys i was so excited a second ago that i forgot to tell everyone what i did to fix it.....well i fixed those two wires i had mixed up and i swapped in my ka-e maf and wouldnt you know turn the key and vvvvrroooooooommmm....its amazing i owe you all.....thanks

anyone got an idea where i can pull vaccuum from for my boost gauge its not registering where i have it plumbed in now, its pulling from where the bov gets its signal i guess ill try from the fpr....

[ca18det240hatch]

*takes a bow* thank you thank you, i'll be signing 8x10 glossies in the lobby, first of all id like to thank NISSAN for such a great engine, and uhh....well you get the idea

glad she runs good, to set your idle down, first make sure you have no vacuum leaks causing it to idle high, and then adjust the 10mm set screw on the back of the idle air controller (the one with the green/brown connector)

good luck with her

[ca240sxcoupe]

i have a question for you guys out there, i have a faze boost gauge hooked up to my fpr and it will only read vacuum pressure and will not read boost, my car does achieve boost quiet nicely and it is quick but just worried that something is wrong.....not sure if it is, my girlfriend will be posting a video of the car for me soon the way it is running now. my wastegate actuator is hooked up to the hot side pipe on the turbo, which i custom plumbed into the sr t25.

i was wondering if it was just a bad place to pull a reading from or could i try teeing off where the actuator is hooked up a get a reading from there...

also i dont know if this means anything but i have an sr side mount with a blow off valve and i cant really hear the blow off not sure if its just quiet with the stock blow off or not.......let me know

http://video.tinypic.com/player.php?v=4p47n87<--- The motor.


Modified by ca240sxcoupe at 1:25 PM 6/21/2007

[ca18det240hatch]

thats very wierd. Defective gauge maybe? If your car is boosting, it should be registering on the gauge, especially if you have it on the same line as your FPR. Your sr20 BOV should be recirculating back into the flow in the intercooler, so yes it will be very quiet.