Testing The Iac?
Thread Starter
|
Senior User
Joined: Dec 2004
Posts: 377
Likes: 0
Testing The Iac?
I took the IAC off the truck and cleaned well with solvent nice and shiny,
then I noticed the small plunge wasn't completely close all the way, so I gave the solenoid 12v and I could hear the solenoid doing a CLICK! CLICK! sound, but the plunge didn't move at all?
Is the valve bad?
then I noticed the small plunge wasn't completely close all the way, so I gave the solenoid 12v and I could hear the solenoid doing a CLICK! CLICK! sound, but the plunge didn't move at all?
Is the valve bad?
Thread Starter
|
Senior User
Joined: Dec 2004
Posts: 377
Likes: 0
Originally Posted by Benaghetto
It maybe stuck. I know of no way to test. Have you noticed it having a little trouble idling after startup? Especially when cold?
maybe I'm convinced that it should be quiet and smooth like a Cadillac!
Elder User
Joined: Mar 2005
Posts: 524
Likes: 0
From: Liberty, MO
The IAC is basically an electronic choke for an F.I. engine. A small amount of shaking isn't to much of a cause for worry. But when it gets violent is when there's something that obviously needs fixin.
Senior User
Joined: Nov 2005
Posts: 298
Likes: 0
Ok I know this sounds stupid but I keep hearing IAC this and IAC that but I cannot figure what that is an acronym for. So what does IAC mean?
Trending Topics
Elder User
Joined: Jul 2006
Posts: 601
Likes: 0
From: Denver
IAC = idle air control valve. It controls the amount of air bypassing the throttle plate at idle to control idle speed.
If the iac is bad, the truck will idle too fast when you come up to a stoplight when its warm. Or, it will die because of idling too slow. The iac will not cause/correct rough idle.
The shaking at idle is more likely a plug or wire or injector issue than iac. The engine won't care about the leaking rack, but the rack does, so I'd recommend getting it fixed.
If the iac is bad, the truck will idle too fast when you come up to a stoplight when its warm. Or, it will die because of idling too slow. The iac will not cause/correct rough idle.
The shaking at idle is more likely a plug or wire or injector issue than iac. The engine won't care about the leaking rack, but the rack does, so I'd recommend getting it fixed.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
Top 10 Ford Trucks Coming to Mecum Indy 2026
Brett Foote
5 Best / 5 Worst Ford Truck Wheels of All Time
Joe Kucinski
Senior User
Joined: Nov 2005
Posts: 298
Likes: 0
Originally Posted by rubydist
IAC = idle air control valve. It controls the amount of air bypassing the throttle plate at idle to control idle speed.
If the iac is bad, the truck will idle too fast when you come up to a stoplight when its warm. Or, it will die because of idling too slow. The iac will not cause/correct rough idle.
The shaking at idle is more likely a plug or wire or injector issue than iac. The engine won't care about the leaking rack, but the rack does, so I'd recommend getting it fixed.
If the iac is bad, the truck will idle too fast when you come up to a stoplight when its warm. Or, it will die because of idling too slow. The iac will not cause/correct rough idle.
The shaking at idle is more likely a plug or wire or injector issue than iac. The engine won't care about the leaking rack, but the rack does, so I'd recommend getting it fixed.
Thread
Thread Starter
Forum
Replies
Last Post
BigSouth
1987 - 1996 F150 & Larger F-Series Trucks
3
Feb 15, 2011 03:34 PM
