Iroc

with all sensors connected the idle will surge from 700 to 1500...as i adjust the idle screw i can stop the surging...but not until it reaches 1500 rpm...when i unplug the maf the car will idle the way it should after i adjust the idle screw...does this mean my maf is bad?

86 5.0L

run KOEO/KOER test, do a through cleaning of IAC, TB, MAF, adjust TPS and then reset your base idle

Iroc

i did the codes and got 24 and 21 so i replaced both sensors..did the idle reset and its still the same...unplug maf...idles properly...when plugged back in it surges...it is a c and l 73mm

90_Mustang_GT

did you check for any vacumm leaks. running propone over the lines, you will be able to pick up the leak

stang8689

ive never heard of running propane over the lines sounds dangerous

AdderMk2

stop ****ing with your idle screw, its not meant as an adjustment piece