help 3 injectors are spraying other one isnt and injector is good

[thizzen4]

cars idoling like shiyt bouncin from 300-700 rpm and dieing and wi can drive it but when get on it ... 3000-5000 rpm it will cut out and back fir and lag and loose power

ANY IDEAS HOW TO START OR WHERE TO START LOOKING

[ultimateirving]

swap injectors around first to see if its the harness thats bad or injector is clogged.
If none of the other injectors work on that clip, that means there is a short somewhere. try tracing the wires from that clip, back to the PCM. If you have a volt meter, try doing a continuity test to make sure there is no breaks in the wire.

[Pro ViZIon]

If you can, swap ecu's first before all the other work.

I had an ecu that was like that and only 2 of the cylinders worked.

[cotbu]

The first thing you should do is make sure there is 12v going to the injectors. you don't have to wait for an ecu, and you don't have to swap around injectors, if you wiring isn't long enough. Anyway if there is 12v present then it's a ground issue. Short answer, wiring or ecu.

[thizzen4]

thanks peps should have it all good tomorrow if not all let everyone know

[thizzen4]

could it be maf when i unplug it it idols the samee

[cotbu]

It could be anything, but the mafs is not going to make one injector not fire! Did you do my test or any testing? Power balance? Or are you saying you don't think it's an injector problem. A mafs issue should throw a code. You won't have to guess. Do some testing cause there ain't now way around it!

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[thizzen4]

ha and cotbu songs not to badd

all injectors seem to be spryain and ticking and all are getting power and so is the maf plugg and ecu isnt throwing any codes. well at least the ecu lights not comming on
could it be a bad ecu ?

just bought a new one this weeek cause other one from tiger jap was burnt..and smelt

[thizzen4]

And so my injectors should be getting 12 volts? Or its a ground issue if they are getting 12 volts

[thizzen4]

Actually cant get that song out my head and keep bumpin it and thinkin how to fix this damn coupe

[cotbu]

Unless your engine is obdpo, it won't show codes unless it's a major malfunction.
You have to manually pull the codes that get stored, cas, mafs, etc.! Even though there is no check engine light.(all it take is a low voltage from most of the sensors) Every time your engine idles funky pull codes. WOW.

Your injectors should have a constant 12v. All of them all the time. The ecu controls the ground. Your post tend to confuse and bewilder me, if you say all injectors seem to be spryain and ticking you don't have an injector problem.

Take a few hours out of the day and do these test and come back with the answers. The few hours also include looking up what these test are, and how to perform them.
1.Check ecu for codes
2.Power Balance
a.spark
b.fuel
3.check timing /w light
3.read plugs

[thizzen4]

K i will tomorrow thanks !

[thizzen4]

made a new thread since injectors are good adn got power to everything adn got a new maf and ecu