surging idle

[68mustang5.0]

THis has been happening for like months now. Whenever my car is warm, and i come to a stop, the idle drops, then comes back up, then drops, as if the car wants to die. IF im in park or neutral and i rev, the motor does the same thing. COuple times the car has died, and in traffic too! So far i have cleaned the IAC, replaced the TPS, cleaned inside the throttle body and plenum, seafomed the motor, and just this morning i cleaned the MAF, and its still doing it! My auto has a shift kit too, and when i shift into gear, it shifts like it normally should, but it feels like it wants to die sometimes. Im going crazy! Any idea what it could be? thanks!

 

[98vortech]

wat did you clean the tb and plenum with???

 

[DropTopPony]

maybe the IAC is beyond cleaning and needs to be replaced...your symptoms are what mine were before i swapped my IAC and it fixed it.

 

[ju015dd]

replace the iac. bottom line

 

[95_302vert]

mine a stantard 95 gt and its doing the same thing i heard that there could be craks in the vaccum line that would do that