nismo2trd

i just got my car running not long ago.. i have a 1j, greddy fmic, extend harness. 2jzgte plugs, walboro 255 and apexi twin chamber. and the pump is consist power. idling is an issue, the engine will fire right up then in about 40 sec it will die out, but it will fire right back up again and do the same again. and when i rev it, it rev smooth, with dark color smoke. and when i hit boost on the road it boogs down. what can be the problem!?!?! please help

-stan

Rexn30

if you have black smoke coming out seems like you are running wayy too rich.

nismo2trd

what can be the cause of running too rich?? o2 sensor? because my o2 plugs is broken when i got the motor, so right now the o2 is not hooked up! or constant power from the fuel pump? the pressure too high for the fpr?

Rexn30

o2 sensors can cause that, not being able to moniter it from lean/rich vise versa can maybe put the system in rich at all times.

Rexn30

Make sure all cylinders are getting fire so your not just dumping fuel in the chamber w/o spark.

jgdynamics

iTrader: (16)

yea i would say its because of the o2 sensor... why are alot of people running their cars without? i thought they were necessary to run the car correctly? yea, just try plugging in the o2 and getting it in and running right...

nismo2trd

i got use to not running a o2. back then with my sr20 i've never ran o2 b4. so i thought it wouldnt casue taht big of a deal. but ill try to hook it up tomorrow and see what happens.!!!

evileagle

lol wtf......your ecu pulls the fuel maps based on what reading it gets from sensors such as the oxygen sensors....running an oxygen sensor is simply not an option. Plug those ***** back in.

nismo2trd

anyone got a picture of the plug for the o2 sensor?!!? the wires are ripped from the plug, and i cant trace it back which wire is for which hole. i try to plug it in with my best knowledge.. gold male plug is for blue.... and the rest i just guessed. and now the car fires up then dies, it wont hold idle. and when i play with the throttle it'll rev, but as soon as i WOT the engine BOOGS, i have to tap the pedal to rev. exhaust keeps shooting flames. what the hell is wrong with it... someone please help me......

nismo2trd

bump...someone please help me.

nismo2trd

anyone witha 1jz please help.

Rising_Sun

iTrader: (2)

Have you checked the vacuum line to your map sensor?

plex

iTrader: (11)

also check the map sensor wire connection to the ecu. Did you extend your ecu wires.

nismo2trd

wheres the map sensor?

nismo2trd

!?!?!!??! bump ?!?!?!?!!?