1996 dodge ram 1500 4wd 5.9l magnum idle issues
Have a 1996 ram 1500 5.9l and am having idle issues. Idle will drop when at a light, stop signs, or when sitting at idle. When the idle drops, there is a loud sucking sound at the throttle body. Sometimes the idle will kick back up other times it will die. Also have some issues with loss of power while driving. Have replaced throttle body, plenum gasket, intake gasket, throttle body gasket, map sensor, IAC, throttle position sensor, all fuel injectors, distributor, plugs and wires, timing chain, head gaskets, heads, header pipes,header gaskets, transmission rebuilt with a tow package and shift kit, fly wheel and torque converter replaced, new alternator and battery, and the ignition coil. There is a crack in the air box, not sure if this could be causing the problem? All of the sensors have been replaced numerous times. This is getting very frustrating as we believe that the problem is a simple fix, but nobody can figure out what the problem is? Many of our friends, my husband included, are mechanics (some backyard and some schooled), and nobody can figure out the problem. Please help!