KA-T wont stay started

[jimenez16]

I am just finishing up my KA-T that i purchased off someone partly finished, I got the car to start but right when it cranks over it shakes and then dies out. Its a 96 swapped into a 91 SE, I have a greddy emanage blue hooked up but im pretty sure its still the 91 stock ECU. I have spark and fuel, my EGR is fully blocked. I am just lost, i am going to replace the cap and rotor along with the fuel filter and spark plug wires, Does anyone have an idea of why the car wont stay started?

Thanks in Advance

[nissanman04]

Sounds like mine did when my IACV wasn't hooked up. If you have spark, why do you want to change the cap/rotor, etc?

[jimenez16]

no real reason, im just to the point where i am trying anything, to get the 240 to stay started

EDIT: I know for a fact my IACV is not hooked up, would it pose a problem that its a 96 engine in a 91 chassis. i just skimmed the FSM and it was saying the newer models used one terminal and the older models used two terminals

Modified by jimenez16 at 9:50 AM 4/30/2009
Modified by jimenez16 at 9:50 AM 4/30/2009

[1mansho]

hook your iacv up to your cold pipe. Thats why your car is dying.

[WDRacing]

Does is matter if the Idle Air Control Valve is hooked up? Um, when trying to get the car to idle...one would think so.

[nissanman04]

Does is matter if the Idle Air Control Valve is hooked up? Um, when trying to get the car to idle...one would think so.

O rly?

[j-z]

and make sure its hooked up BEHIND the MAF, so the maf can meter the airflow.

[jimenez16]

thanks guys for the responses i am going to work on the car tomorrow so i will post up the results

[jimenez16]

just got back from the car, i hooked up the IACV and it was still stalling out, i noticed that it would start for 3-5 seconds then die out and when i pressed the gas it would just die out faster. But the car would never start twice in a row. you would have t wait 10 minutes in between starts to get it to fire, so their might be a flooding issue? i am not quite sure. I also looked at my spark plugs and the #1 would look suprer clean but #2,3,4 would be black with carbon/soot.

[j-z]

post pics of your engine bay.... ive never dealt with the greddy emanage, but try disconnecting it and see what it does. its got to be something simple. cant be too much fuel, or else your plugs would be covered in fuel. when it actually fires up, does it sound healthy? any smoke? if it was here in person i bet i could have it running in an hour.

[jimenez16]

I did unplug the greedy and it still cranked over. it sounds healthy. When i get out of school tomorrow i will get a video of what its doing, so it will give you a better idea.

[BluRasta]

you have a tune problem my friend lol I have the same issue once i got bigger injectors

[BluRasta]

it seems like have too much fuel thought

[B-Boy DuB-L]

I'm having this exact same problem but with different variables. My car is all stock and has the exact same symptoms yours does. Like exactly to the tee. When i press gas it dies faster and some spark plugs are covered black and others aren't. But for mine I'm hoping that it is the wires going bad on more than one cylinder. I just ordered new ones and should be here by friday i will let you know if it works. And if not we will figure it out together hahah

[jimenez16]

i figured the tune fr the car would be horrible because i havent even had a chance to get it tuned. I havent even had a chance to make it over to the car in the last couple days but hopefully friday or saturday i can get over their and get some block off and try and find the problem out, but yeah man keep me posted on your problem i know it has to be pretty simple

[B-Boy DuB-L]

So yea I installed the new Wires. I got nothing out of them for right now. The car is still doing the same thing come monday I am going to be changing the MAF and possibly the throttle body as well and hopefully i find out the problem. Did you have a break through with you car yet?

[jimenez16]

no not yet although after plugging the iacv it does idle for a bit longer now but still shakes and then dies. i did notice i do have a leaking injector seal "#1" so i am going to be fixing that then take a look at the fuel pressure regulator because their is a very bad gas odor everytime i start the car or try to

[jmac636]

Pull the whole fuel rail and turn the key to the accessory position. But don't turn over the engine. This is how you check for Injectors not sealing. It's very common for injectors to not seal even with new O-rings.

[B-Boy DuB-L]

Yea im probably goin to do that same thing. My car was jsut turning over yesterday until i changed the fuel pump fuse. And it started right up but went to the same exact problem. I'm going to be working on it later today. Ill let you know how everything goes.

[jimenez16]

I will have to try that. i am gonna go pick up a seal from menards and see what happens....DAMN these 240s'..i have been searching a lot and it seems like this is a very common problem but none of the threads ever have their answers posted

[jimenez16]

If this is a 96 engine in a 91 chassis and they both were DOHC would the MAF sensor plug be different? from doing some searching it looks like it would, and also i looked into my maf plug and 1 of the holes does not have the metal square in it like the rest of them do....

[C-Kwik]

If this is a 96 engine in a 91 chassis and they both were DOHC would the MAF sensor plug be different? from doing some searching it looks like it would, and also i looked into my maf plug and 1 of the holes does not have the metal square in it like the rest of them do....

When you swap a KA from an S14 chassis into an S13, or vice versa, you have to change out any sensors and control hardware that are different. If you are trying to run a S14 MAF on the S13, off the stock ECU settings, I would imagine it would cause problems. Its possible that you might be able to resolve it with some changes to the settings with the E-Manage, but I'm not sure the S13 MAF is a supported MAF. It may require manual adjustments using the support tool and a PC. You might be better off swapping to the appropriate S14 ECU or swapping all the sensor and control hardware to S13 parts.

Although, another problem is if you've also upgraded the injectors to larger ones and its not being compensated for correctly, then it may add more complexity. If you have the stock injectors, you might try putting them in to see if you can get it to idle correctly (DO NOT BOOST WITH THEM IN THERE). Also, if you have the support tool for the E-Manage, check what the settings are. Worst case scenario, save the settings then clear out all values so that it simply passes all the stock signals. And you may want to check the wiring to make sure it was done correctly.

ive never dealt with the greddy emanage, but try disconnecting it and see what it does.

The E-manage is wired to intercept the MAF signal. As a result, simply disconnecting it would cause the MAF signal value to become 0 as far as the ECU is concerned. The same would be true of the ignition timing signal if the ignition harness was installed.

[480sx]

Just sounds like you need to program the E-Manage for your MAF. See if you can get the car into safe mode by disconnecting the MAF.

Make sure your IACV is hooked up air tightly to your cold pipe, it has to consume metered air for your motor to run.

Did you upgrade your injectors? There is really not enough information to figure out what the problem is. Little history of your build?

[jimenez16]

The injectors are upgraded to 550's. Honestly the e-manage was in the car when i purchased it..i am thinking about getting rid of it..

History of the car:I bought it off a guy who had the stock Ka24de in it and he turboed it, blew the engine then swapped in the 96 engine over..So everything was running fine with the other engine and supporting mods but now with the same mods and a 96 engine it isn't staying idle. from the looks of it, the setup is a CX racing setup. Except for the manifold.

and thanks guys for the responses..

[B-Boy DuB-L]

Hey jimenez did you ever figure it out?????

I changed my maf and still nothing. I'm carless =(

[jimenez16]

i forgot all about this thread i have one on Ka-t.org....no nothing yet i have been working a lot so not a lot of time to get to the car, i did find out that my #1 injector was missing the rubber tip and also looked a little smashed so i am in the process of getting new fuel injectors also i was told that maf turbulence could be an issue, i guess that is when the maf doesnt have enough straight pipe infront or behind it to get a correct reading, so i will take a look at the to..did you get anywhere?

[B-Boy DuB-L]

Yea i feel retarded lol. The tubing from the air intake to the throttle body was on but it was not on fully. So basically i had a huge vacuum leak so i just pulled the rubber on more and tightened it and that was the end of the problem Yay... until today. I think it has to do with the fuel, it has been sitting for a few months and the fuel filter is dirty so it started having the same symptoms until i put more gas in it. I will update after i get the fuel filter and bleed my cooling system

[jimenez16]

yeah i am going to go thru and check all my vacuum lines 100% because it is a swapped engine and i probably should have done this awhile ago

[B-Boy DuB-L]

well the wierd thing is my car acts the same way it used to sometimes.. or until i actually start driving. It's wierd