i have a lsvtec fully built but sometimes it stalls when i come off the belt way i have a p28 ecu here is the list of mods . i think i might be the ecu sometime the cel comes on but it goes out . btw i tried my stock auto ecu car won't start.
could it be the ecu i have p28 chipped 3 chips 2 threw cel on but the idle is rough. it sounds like it wants 2 turn off . if i give it gas it ok turned up fuel pressure same problems new engine has 401 miles of breaking 2 500 miles ne help car will die without warning @ idle today i was not even driving the car had it running @ it die full or 93 octance gas .


block
99b18b
ac blockguard
arp mainstuds
golden eagle blockgirdle
arp headstuds
ge oil adapter
acl bearings
itr oil pump
gsr gmb waterpump
balanced crank
shotpeened rods
p73aoo pistons
new oil pan gasket
flp baffled oil pan
obx pulleys
itr crank pulley
drivetrain
gsr tranny
ls 5th gear
itr lsd
act stge 3 6 puck ceramic
comp clutch 9.5 lb flywheel
flp clutch line
compression 11:9:1

head b16a2
rev valvetrain
rev flat valves
port matching on tb & manifold
blox hi lift cams
65 mm str tb
blox manifold
h22 vtec 290 injectors flowed/cleaned
190 fuel pump
new valve gasket
new headgasket
new orings
tuning
p28 with chipped all 3 programs run horribly skunk 2, j racing, allmotor
ge cam gears

 

Well, I take it you've tried to reset the ECU? Make sure after resetting the ECU that you let the car run for a good 5-10 minutes before touching it. Have you taken the chips out and tried to run it like that? Sometimes the chips just ruin it.

 

where did you buy these chips from... they sound like they might be a factor

 

i got them from ih8ricerz here on ht

 

what do u mean by ruining the chip

 

like i have told you.......try plugging in the ecu into a friends car to see if theyre car will run fine. If so, then its not the ecu...... And in fact if its not the ecu, then check your sensors..make sure you have the right ones plugged into the right places....... I had that crazy idel issue when i did my skunk2 IM install. Wrong plug in wrong place, and vacuum leaks

 

i will have them check how do u know if u have a vacuum leak

 

sounds like a sensor/vacuum issue more than and ecu problem.

double check that you have everything plugged in right for the sensors.

but really take a look at the vacuum. this is my guess. to check your vacuum lines...take a physical look, and make sure they're all going where they're supposed to (should be a diagram under your hood, otherwise refer to a helms, chilton, etc). if everything is where it should be, you can spray the lines carb cleaner and you'll physically see the leaks.

good luck for you since some of my family lives in your town too! haha

 

thanks for the insite

 

vacuum lines on the manifold, tb, fuel rail ?

 

i'd check them all out...they'll pretty much all be connected at the intake manifold on one end...

 

check for loose lines or not connected lines

 

ill say check ur distributor cap, coil, spark plugs, spark plug wires.. etc... btw wuts the cel code throwin anyways ?

 

code 43

 

A couple things to check.

-Fuel pressure... should be around 45 psi at atmospheric press (vac line off)
-MAP/TPS plugs. Are the EXACT same plug just with diffrent wires, make sure they are in the right sensor, if they are not everything will be fucked up.
-Is the chip in correct? There is a specific way that chips need to be put in the ecu. The "notch" (little mark on the chip) should be facing the wiring harness of the ecu.

Get another ecu from a functioning car to test yours with. Elminate your variables of error. If your motor runs fine on that ecu then youll know theres a problem with the ecu or chip placment, but IH8RICERZ does good work, so im almost positive its not the ecu (im actually using one of his p28s in my integra)

Was 43 the only code? Cyl/Crank position sensors that are faulty can cause random shutoffs.

-sander

 

i thought once i did obd 2-1 conversion all cel codes are from obd 1 obd 1 code 43 is fuel supply problem

 

Thats true, im saying is 43 the only code?

 

yes 43 is the only code

 

check all those other things i said in the post above and then come back and let us know.
-s

 

think the idle and stall problem are my throttle body i has no fitv whole or iacv plumming its a str throttle body. i think i might live with it , and send my stock ls tb out 2 get bored my stock 1 does have the fitv and iacv holes . or get a itr tb