Idleaircontrolvalve idleair controlvalve needs to be replaced

May want to titen that injector..or take it out n replace w a used one from junkyard. Or take them all out n inspect. Also idleair motor in back of throttlbody may need cleanin. W age of car ..complete inspect of ignition components like coil n plugwires and total engine

The idleair needs cleanin on throttlbody. Motormounts probly worn..dont buy aftamarket..git factorypart

Get an ignition tune..newplugs n cables..maybe test module n coil. Have fuel injectors testd Clean throttlbody and idleair. Egr valve may need inspectin

A 2004 model is 14 years old. Any vehicle is taken off the bluebook price guide after ten years.
Unless it is a family herloom or a collectible suggest not spend any money on it.
Upgrading to a newer model would be more cost effective.

Bad fuelpump or filter. Or ignition needs tune..new coil or distributrcap...Also cud hav worn egr or idleair causing vacuumleak

check filters first you may need diagnostics a hand held computer to find fault some car shop offer this service

first look inside distributer cap for corrosion-clean or replace-no relief then inspect and test all ignition components--theyr old--make sure fuel pump is producin--clean idleair passage and motor-also TPS and throttl body

in the throttle body

clean passage for iac( idle air control motor

Might be a good idea to provide what your
referring to. Like make.model,etc. I doubt
you will be able to do anything,as these vehicles
are computer controlled.You may have a bad Idle
Air Control Solenoid,beyond that you need help