Who can figure out my problem?

[richiev8s13]

Problem is when i first start the car in the morning fires right up drive perfect till it warms up the when i shut it of
wont start i have to pump the gas like a carborated car to get it to fire and when i come to a stop it wants to die what would cause this

motor s13 black top
no boost leakes
bov isnt the problem and its uncirulated i know that will cause it but this time its not
what else could it be

[USMCgetsome]

sounds exactly like the MAF. Try cleaning it with a MAF CLEANER SPRAY from your local autoparts store or look at changing it. Also, check your distributor

[richiev8s13]

okay ran to the autoparts store got some cleaner and sparyed it didnt work what would make my car stall when i come to a stop ahhhh and also not wanna start
right away

also its has done to it

SR20DET BLACKTOP
BC 264 IN/EX CAMS
GREDDY INTAKE CAM GEAR
BC TITANIUM RETAINERS and Valvesprings
P2M ROCKER ARM STOPPERS
POWER ENTERPRISE 3 LAYER METAL HEAD GASKET
westco small battery
NGK BKR7E
Z32 MAF
GARRET BALL BEARING GT2871R .86 STEEL BRAIDED TURBO LINES
SARD 850CC INJECTORS
ISIS POLISHED INTAKE MANIFOLD
5 MM PLASTIC THERMAL INTAKE MANIFOLD GASKET
3 INCH exshuast
CX ALUM RADIATOR
Isis Fans
BRAND NEW VALVE COVER GASKET
ROM TUNED ECU By Ground Werks Gragage
Front mount Intercooler
AEM WideBand
PROJECT SILVIA GREDDY STYLE COLD PIPE
TIAL 55 BOV

[USMCgetsome]

when the maf begins to fail you'll notice it as a slow death. It will start great and drive fun for a few mins then slowly act up while driving then as your on a decel coming to a stop it will bog and simply shut down.

time for a new one homie!

[richiev8s13]

ill have to try a new one and check back

[DuckyD]

Check your ECU coolant temp sensor.
http://www.frsport.com/Nissan-OEM-ECU-T ... _2199.html

[richiev8s13]

thanks ducky im ganna have to try that first its cheaper and its seems to be kinda what mines doin once warmed up it act funny thanks bro ill try it and let u know

[CRyan]

I believe ducky hit it on the head. Coolant temp sensor for sure. Hints the reason once its warmed up it acts funny. The MAF would die a "slow" death, but it'd only take a couple days. . .

[richiev8s13]

ok guys so i changed both sensors the ecu one and the other one and nothing does the same thing what else could it be

[505haze505]

Did you try a different mass air flow sensor because i went through the same problem with mine

[richiev8s13]

no havent tryed it yet next on the list but i will and let u guys know as of now any thing else that could be the problem

[CRyan]

Theres another post up on top with a guy having same problem, refer to what Pyro said in it.

[richiev8s13]

so i tryed a known working maf and it still didnt work even had the kid put mine in his car and it worked fine so that not it anything else

so i have tryed
coolant temp sensors both
and a maf

[Tulsa_S-13]

Have you thought about the IACV?

If it's the IACV when it does die you can keep it running by keeping the throttle partially open.

[richiev8s13]

ok cleaned it out and swaped one in from a buddies and it still is doing this im getting to the point where i cant stand it anymore lol

[Street_Science]

Heres a repost of what I said to another member

Have you resistance tested your coolant temp sensor?......
It works on the basis of resistance decreases with increasing temperature, and its called a negative temperature coefficient (NTC) thermistor.... I would definitely start with that ....

Basically the ecu uses this (ect) output as well as other sensors to develop an advance strategy to maintain proper afr ratios for optimum fuel economy and horsepower.... It effectively +/- the short term fuel trim etc....

I would personally verify this with the ohm meter setting on a digital multimeter and check the resistance values.....
The fsm should list the operating ohmage range specs....
Now this is one possibility ......

I would def ask maybe a mod, if the maf has a built in intake air temp sensor, as alot of hotwire and hotscreen type mafs do

[Street_Science]

Repost :

Coolant Temp Sensor:

to test your cts get an ohm meter and unplug the sensor and check the resitance of the sensor. you will also need a thermometer to check the temp of your coolant. the values are as follows:
Resistance 2.1 - 2.9 K ohms at 68 deg F
0.68 - 1.00 K ohms at 122 deg F
0.236 - 0.260 K ohms at 194 deg F

As this value decreases the computer increases fuel load and retards timing to lower cylinder head temps and reduce detonation.