Idle high

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May 15, 2017 | 02:37 PM

Iron Port

Thread Starter

Freshman User

Joined: Nov 2016

Posts: 28

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From: st. Augustine Florida

Idle high

My 1993 Bronco 351w e4od is idleing way too high, around 2000 rpm. It would take a while for it to idle back down to 1100 rpm, and thats high too. It would shift extreamly hard into reverse it would shake the entire truck and it would clunk into any gear. It gets up to 10 mph at idle. Does anyone have a fix?

May 16, 2017 | 05:51 AM

gatorfor88

Postmaster

Joined: Jan 2013

Posts: 3,512

Likes: 3

From: Panama City

pull the codes

May 23, 2017 | 08:28 PM

greystreak92

Lead Driver

Joined: Sep 2002

Posts: 9,182

Likes: 12

From: Gateway to the West

Quote:

Originally Posted by gatorfor88

pull the codes

and check for vacuum leaks. (Codes could be indicative of vacuum leaks depending upon what comes back from the KOEO/KOER tests.

May 28, 2017 | 11:04 AM

Encho

The Southernmost Mod

Joined: Dec 2004

Posts: 6,902

Likes: 21

From: Caracas, Venezuela

Also, if you decide to, do some maintenance: Get a throttle body cleaner can (no carburetor cleaner) and clean the throttle body and the mech part of the IAC valve. use nothing else but the can, no brushes or anything, and follow the instructions on the can.