Hi i have a 95 mustang vert 5.0 H.O. 5spd idle is erratic sometimes it idles 650 to 700rpm perfectly smooth then randomly starts surging up and down then sometimes it will race up to 2000rpm without touching anything stay there
for 30 seconds or so then fall back down and start surging again then smooths out.
While driving sometimes while driveing at a smooth even speed suddenly it feels like another cylinder or two came on sudden surge of more power then
drops back to normal.
things i have done checked for vacume leaks cant find any unless under the intake havent removed that yet
parts changed all original brand new parts
pcv valve and filter
air temp sensor
coolant temp sensor
iac valve yes mtorcraft
tps
egr and egr sensor
cap rotor plugs wires and coil (tried multiple caps rotor wires)
fuel pressure regulator
fuel filter at tank
driver side 02 sensor
things not changed
fuel pump (pressure seems fine)
ignition module had it tested at pep boys on their computer tested good 12 times in a row
distributor is there any way i can check it
passenger side 02 sensors
maf i did clean it though
is there something else im missing in this list
i did the proper idle setup procedure including letting it idle for 10 to 15 minutes to learn its idle
i hate just throwing parts at it like that but i dont care at this point i just want it to run correctly.
Any ideas
for 30 seconds or so then fall back down and start surging again then smooths out.
While driving sometimes while driveing at a smooth even speed suddenly it feels like another cylinder or two came on sudden surge of more power then
drops back to normal.
things i have done checked for vacume leaks cant find any unless under the intake havent removed that yet
parts changed all original brand new parts
pcv valve and filter
air temp sensor
coolant temp sensor
iac valve yes mtorcraft
tps
egr and egr sensor
cap rotor plugs wires and coil (tried multiple caps rotor wires)
fuel pressure regulator
fuel filter at tank
driver side 02 sensor
things not changed
fuel pump (pressure seems fine)
ignition module had it tested at pep boys on their computer tested good 12 times in a row
distributor is there any way i can check it
passenger side 02 sensors
maf i did clean it though
is there something else im missing in this list
i did the proper idle setup procedure including letting it idle for 10 to 15 minutes to learn its idle
i hate just throwing parts at it like that but i dont care at this point i just want it to run correctly.
Any ideas
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