Throttle Sticking Help

[David96sport]

i have a 96 explorer i’ve been repairing things on recently (cooling system, tune-up) and now when i turn it on, it idles at 2k rpms for a few seconds then drops, which seems normal to me, however, if i even barely tap the gas pedal it will shoot up to 2000-2500 rpms. the same will occur if i shift into revers, drive or neutral. i’ve already cleaned my IAC, tried a new one, and have cleaned my throttle body. any ideas?

 

[Rick]

Sounds like what happens when you have a vacuum leak. Check all your vacuum hoses to ensure they are attached and not cracked.

With a helper you can also verify that the throttle body is closing with the throttle pedal and not sticking. You can test that with the engine off.

 

[BKennedy]

Rick's right. You might have knocked a vacuum line loose or cracked an old tube while changing the wires.