ka-t stallin and jumpin rpms!!! help!!!!

General discussion forum about the 240sx, and a great place to introduce yourself to the board!
mendez61414
Posts: 16
Joined: Thu Nov 12, 2009 3:23 am
Car: 240sx ka-t

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its a ka-t with a t3/t4 turbo setup with 10lb of boost.. running 370cc injectors with atock maf, tune by emance.. stalls when i start up and once it warm it jumps rpms between 1500 & 2500 rpms.. need help check for vaccume leaks and boost leaks nothin.. also its runnin to rich.. where can i get a fuel pressure regulator to make it stop runnin rich and how do i install it.?? help!!!


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blacksrjdm
Posts: 2104
Joined: Fri Dec 15, 2006 10:26 am
Car: 89 240sx, 99 CBR900RR.

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Hey man, this is awfully similar to your other thread

If you look around the border of the page you will see many links to what are called "parts vendors" These parts vendors sell...ready for it...parts, ah yes. Also, in this very website there is something called the FSM (service manual) that will assist you in any installations you may be confused about. To install a fuel pressure regulator, which I am sure is not your problem, you need to identify the stock fpr (fuel pressure regulator), find the fasteners that attach it to the fuel rail, remove said fasteners, and replace.

I think the issue is your coolant temp sensor...

Do not ask where is that and where do I get it and how do I replace. Call a parts vendor, get a price, if you like the price, order it or pick it up and check the FSM for instalation and placement.

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DMan II-40
Posts: 1234
Joined: Sun Oct 22, 2006 5:49 am
Car: 1995 240SX SE
Location: East Bay Area, CA

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I have a feeling it is your tune. E-Mance went to crap about a year ago. Jason sucks now. But check the other stuff first then I would worry about the tune. (Good luck getting a new one, his customer service is s*** some of the worst).

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Chris28
Posts: 3159
Joined: Sat Jul 14, 2007 11:18 am
Car: 92 s13 KA-T
Location: 757/919
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How close is your MAFS to the turbo? There needs to be a 90 degree bend in between them or else the turbulence affects the MAF sensor's reading.

mendez61414
Posts: 16
Joined: Thu Nov 12, 2009 3:23 am
Car: 240sx ka-t

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Well my maf is 14inches away with a straight pipe.. Also I check codes and I get a coolant senor code.. Goin to change it soon.. Any more advice.??

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moulton712
Posts: 762
Joined: Sun Sep 09, 2007 8:43 pm
Car: coupe, hatch, both s13s

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mendez61414 wrote:Well my maf is 14inches away with a straight pipe.. Also I check codes and I get a coolant senor code.. Goin to change it soon.. Any more advice.??
replace coolant sensor.

another thing that makes 240s idle high is bad tps

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blacksrjdm
Posts: 2104
Joined: Fri Dec 15, 2006 10:26 am
Car: 89 240sx, 99 CBR900RR.

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mendez61414 wrote:Well my maf is 14inches away with a straight pipe.. Also I check codes and I get a coolant senor code.. Goin to change it soon.. Any more advice.??
No dont change the coolant temp sensor, that wouldnt be the obvious part. Sorry for the brash posts but with this kind of ignorence being thrown around what is one to do...

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driftin_sr20det
Posts: 617
Joined: Tue Oct 04, 2005 10:23 am
Car: 92 Coupe

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Sounds like an emance tune problem to me boss....

mendez61414
Posts: 16
Joined: Thu Nov 12, 2009 3:23 am
Car: 240sx ka-t

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ok im goin to change my tps and any other codes.. also got a cam sensor code. and a knock sensor.?? help??

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blacksrjdm
Posts: 2104
Joined: Fri Dec 15, 2006 10:26 am
Car: 89 240sx, 99 CBR900RR.

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Change the sensors that the codes are representing and stop making stupid comments and just do it already...

Change the knock sensor last if at all. Normally a dumby code for another problem. U need to either start fixing the car or give it to someone who will.

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Csomme
Posts: 200
Joined: Tue Jun 26, 2007 1:47 pm
Car: 1985 Corolla AE86 GTS

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Finally, people on Nico are telling it how it is.

Sell your car.

mendez61414
Posts: 16
Joined: Thu Nov 12, 2009 3:23 am
Car: 240sx ka-t

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s***!! this a 2tone color 240sx all orginal parts.. its a 2grey color.. u want it.??


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