Has anybody here removed/plugged the IAC?

[df2x4]

If you haven't tried it, but want to give your opinions based on what you've read on the internet, ok then.

What makes you think anyone giving you advice on this hasn't tried the blade mod?

 

[letitsnow]

When I say "tried it", I am talking more about the title of the thread.

 

[df2x4]

Allowing the computer to adjust the idle by adjusting a vacuum leak just seems wrong.

Welp, better rip the whole thing off and go carb, then.

 

[Supercharged111]

I ran an SDS standalone years ago. It wouldn't run an IAC, it only a high idle vacuum switching valve. That was educational. It was only good down to about 50 degrees. Fire it up and it'd idle around 700. It was about 1500 or better when it switched off around 120 degrees at which point the car would barely idle, then once it got up to 180 or so it was good to go until a hot restart where it'd hunt and struggle to idle again. Been there done that it sucked. Give it time, it'll piss you off.

 

[Supercharged111]

Allowing the computer to adjust the idle by adjusting a vacuum leak just seems wrong.

You realize a carb is a metered air leak, right?

 

[letitsnow]

You realize a carb is a metered air leak, right?

That mixes that air with fuel.

 

[blacksport]

I just pulled my TBI motor for my 5.3 swap and i was reluctant to do it because that dam 305 tbi motor ran so well and had 210k on it chirping second with the corvette servo. maybe you need a new iac motor? my lt1 firebird kept stalling out i replaced the iac motor and boom FIXED.

 

[letitsnow]

I ran an SDS standalone years ago. It wouldn't run an IAC, it only a high idle vacuum switching valve. That was educational. It was only good down to about 50 degrees. Fire it up and it'd idle around 700. It was about 1500 or better when it switched off around 120 degrees at which point the car would barely idle, then once it got up to 180 or so it was good to go until a hot restart where it'd hunt and struggle to idle again. Been there done that it sucked. Give it time, it'll piss you off.

You have a lot of experience with this (or similar) stuff. Thanks for the info. I can now set my idle at whatever rpm i'd like in about 30 seconds with a screwdriver. If it won't idle in the winter when cold, I will just run the idle up higher for the winter.

 

[Schurkey]

Reminds me of folks who don't understand how an automatic choke works, won't take the time to learn, and make improper adjustments that make the original problem worse.

Then instead of doing proper diagnosis and learning about the system they're working on, they cobble a cable linkage and brag about how expertly they can control a manual choke.

Some folks need their fingers broken with their own wrenches.

 

[Supercharged111]

Reminds me of folks who don't understand how an automatic choke works, won't take the time to learn, and make improper adjustments that make the original problem worse.

Then instead of doing proper diagnosis and learning about the system they're working on, they cobble a cable linkage and brag about how expertly they can control a manual choke.

Some folks need their fingers broken with their own wrenches.

I grew up on carb'd trucks, just because that's how they came from the factory. Of course, they were all old neglected POSs. Imagine my surprise when I finally plunk down the cash on a fancy new Edelbrock 600cfm 4bbl carb and the instructions describe, in great detail, how to set up the automatic choke. That was hands down the best running carb'd car I've ever known (minus hot restarts, vapor lock, and power left on the table to a Holley). Only when the temps dropped below zero did it require more than one simple pump to set the (adjustable!) high idle. So many people love carbs and yet so few of those people know WTF they're actually doing with them.