Serious help needed. 98 Avalon won't stay running

[arizonas1stchoice]

1998 Avalon, will start when you partially hold throttle open, but dies if you try and move throttle. It is losing injector pulse, i have a noid light on a couple of the cylinders and when you start reving it up the noid lights get brighter then die out and the car shuts off. i have tried crank/cam position sensors, tps, iac, ignitor, all 3 coils, ohmed all 6 injectors, checked plugs wires, checked for good flow out exhaust, mass air flow is new, checked wiring harness and all grounds. help!! i am almost wanting to blame the ecm but do not think it is that. i have my scanner on it and everything seems to be ok other than running lean. if anyone has any ideas or has seen this before please let me know.

[Jigg007]

Those coil packs lead straight back to the ECM, I believe.

Good battery? Maybe even a ground on the ECM/engine is causing a voltage drop. Increasing the RPM increases the energy needed by the coil packs, causing a larger voltage drop, enough where the ignition system cant be sustained.

Because from what you mentioned, I can't think of much else mechanically related that would cause a spark to be lost.

I think the coil packs have a dedicated ground wire back to the ECM also. but for kicks take a VOM and measure voltage from the battery negative terminal to the cylinder head. Should be close to 0 volts. try it at the rpm before it kicks the bucket. try it on the ECM too.

Thats about all I can muster!

edit:reading your post another time I see you already checked grounds.

[tacosteelersman]

Do you have good fuel pressure?

[arizonas1stchoice]

fuel pressure is great, 50psi even when it dies. i am not losing spark, i am losing injector pulse. the pulse that tells the injectors when to spray.

[aznstylez]

Clean your IACV(Idle Air Control Valve). Take out your intake hose, right before your throttle body flap, there is a hole. Get a can of carburator cleaner, throttle body cleaner, sea foam, or mechanical cleaner and spray it into that hole. Let the cleaner soak in for at least 5 minutes and turn on the engine. Step on the gas a little if the car struggles. Carbon builds up from time to time.

[arizonas1stchoice]

already did this... does anyone know where to get a good used computer (ecm) or cheap reman for this car? i have the toyota numbers off the old one if needed.

[tacosteelersman]

Best I can think of is local salvage yards, maybe E-BAY, for sale section of this site? I am not sure about the ECM, but keep in mind when looking for used parts the Avalon and (1MZ-FE V6) Camry of that generation share the same parts.