Stack Exchange Network

Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

Questions tagged [iac-valve]

The tag has no usage guidance.

0
votes
0answers
21 views

Where is the IACV?

Where is the IACV on this engine? (Ford Fiesta Mk6 1.4 FXJA)
0
votes
1answer
144 views

When braking RPM drops and radio cuts off (Sometimes when rolling down the window same happens)

I have a 2002 Honda Civic, it has been working great for many years until now. I have been having strange things happen: When I apply the brakes or roll down the window the RPM drops and my radio cuts ...
1
vote
0answers
31 views

Low power when starting up Toyota Avalon

My buddy owns a 2002 Toyota Avalon. When he starts it up it barely holds RPMs, and he has to give it gas when it starts up. Linked video https://youtu.be/XTiK5BFFXKg He thinks it might be the idle ...
0
votes
0answers
212 views

Replaced Idle Air Control Vavle (IACV) and Still Stalling

2004 Ford Taurus SES, DOHC 24V Car stalls at stop lights ~once every 3 days. Throttle body cleaned out ($150) - no difference. Replaced IACV with Motor Craft OEM ($80). No stalling for 5 days but ...
8
votes
1answer
899 views

Rough idle only under load

I'm going to describe the symptoms with a very short history, some preliminary theories ( based on past work I've done on this car ), the data I've gathered and what, if any, conclusions I might draw ...
2
votes
1answer
2k views

Procedure for throttle body and idle air control replacement (ford ranger)

I'll be replacing the throttle body in my 2004 Ford Ranger (engine v6 3.0L vin-U, mileage ~ 130000) as the result of my previous post (see here Is hot desert weather the source of my recurring car ...
8
votes
2answers
1k views

What is the point of heating the IAC Valve?

I recently added a cold air intake and cleaned the throttle body and IAC valve (I was having hunting idle issues) on my '01 Accord V6, and I noticed that there were coolant lines running through the ...
4
votes
1answer
517 views

Honda Hornet engine stalls

I have a Honda Hornet (CB600F) PC41 from 2007. It's the first model with EFI. The bike has an error that we can detect by observing the blinking pattern of the FI light: 2 long and 9 short flashes. ...
9
votes
2answers
18k views

Why Does Coolant Flow Through the IAC and Throttle Body

On many engines I've seen coolant is circulated through the Idle Air Control valve and the throttle body. One such example is the Mazda 2L 4 cylinder FS used in the 626. The IAC is ECU controlled, ...
9
votes
1answer
130 views

IAC valve cycling eratically

I have a 2004 Freestar with 240000 kilometers on it. I have had problem with the engine surging at about 1100 rpm or high idle. No check engine code is logged, I put it on a Ford computer and there ...
7
votes
1answer
151 views

Where is IAC valve on 2003 Ford Ranger 6 cylinder?

I'm working in my grandson's car. His idle goes up and down with the A/C off. I can't figure out where the IAC is. He just bought it and we don't have manuals or diagrams yet. Can someone help me ...
11
votes
1answer
183 views

How to Tell if an IAC needs to be Cleaned?

Is it possible to diagnose an IAC as needing cleaning without actually taking it apart? For example, I recently was having some idle issues with my 99 Nissan Almera 1.6L which were solved by ...
8
votes
2answers
7k views

Is it healthy to drive with a bad IAC? [closed]

My IAC is bad and in order to keep my car running while a stop sign/light is to have one foot on the brake and one foot on the gas. Is this an effective fix to travel until I get it fixed? Or ...
10
votes
2answers
655 views

Why Have More Than One IAC Type Device On an Engine?

I've had two Mazda's, a 97 323 and 98 626. On both these car's engines there was only a single IAC mounted on top of the throttle body, and no other device for adding air flow on the intake side. ...