chrkjpn

Got a 94 f150 5.0 4x4. Seems whan i first crank it up if i give it gas to rev it up soon as I let off it wants to die. It shuts off some times but most of the times it just idles down real low then picks back up. Truck is tuned up good. New plugs,wires,fuel filter, o2 sensor, thermostat,temp sensor and just ran seafoam through system. Idk why it does this When I put it in gear to drive it is fine just when first crank an at idle it wants to die when I rev it up. The voltage also drops when it does this. New battery and cables also. Idk what is causing this.

ymeski56

At normal op temp, at idle, does disconnecting the IAC have any effect? If not, it's probably n/g. Fuel pressure check & Base time check. Error code check.