I have a 1995 ford taraus sedan 3.0L, 125k miles, I was having an issue with the car not cranking over and stalling on me when not constantly feeding fuel, and replacing the fuel filter(which was rusted as all get out) seemed to solve the issue(at least for one day), as the problem came back i replaced the fuel pump(which agian helped slightly for a day or so), and cleaned the throttle body and cleaned the idle air intake valve(the car has the most problems when not actively driving(aka idleing) or feeding fuel.) I have a feeling the injectors are really clogged up(even though I've run gas cleaner through it, it does take a while for gas cleaner to work I've heard)
My main question is outside of cleaning dirty injectors manually, what else should i check regarding this issue.
Also note: the car did sit for a couple of years and has old wiring, it was my great grandpas car, i believe the spark plugs, wires and coils pack was changed less than 20k miles ago before I bought the car.
Please don’t double post, thanks.
I think you have it right with the fuel injectors. They should probably be removed and thoroughly cleaned or just replaced with new.
Have you considered that the stepper motor on the Idle Air Control Valve isn't opening the IAC valve (either because of damaged/corroded wiring or a worn out stepper motor)?
Maybe disconnect a Large vacuum line from the intake (like the one going to the purge valve) and try to start it and see if it idles better with some air getting into the intake.
The thing is, when you press the accelerator pedal you aren't "feeding it fuel". You're opening the throttle plate and "feeding it" air.
The computer controls the fuel and from what you say, it's able to do that except at idle or when your foot is off of the accelerator pedal. (The times when the IAC valve should be controlling the air intake)
The dirty injectors would be the main issue since you already changed the fuel pump and filter. Try pressure cleaning the injectors or replace them. The cleaning stuff you pour in the gas tank are not as effective as pressure cleaning. Have a mechanic do it for you.
Another thing could be vacuum leak. Check that as well.
