idling rough
Thread Starter
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Laughing Gas
Joined: May 2006
Posts: 1,211
Likes: 69
From: land of 10,000 lakes
I fixed it!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Cleaned my Iac and it idles like new, and so soooooomth.
I cant belive it!!!!!!
I will see how long my clean job lasts before I replace it.
Cleaned my Iac and it idles like new, and so soooooomth.
I cant belive it!!!!!!
I will see how long my clean job lasts before I replace it.
Thread Starter
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Laughing Gas
Joined: May 2006
Posts: 1,211
Likes: 69
From: land of 10,000 lakes
Dam, Just went to test drive it around the block and now it is idling the same as before. After cleaning my Iac it seemed to idle real nice. Took it around the block and now it is the same as before!!!
Should I buy a new Iac?
Should I buy a new Iac?
Hotshot
Joined: Jan 2004
Posts: 19,768
Likes: 1,082
From: St Louis
Originally Posted by Ford Fx4
Dam, Just went to test drive it around the block and now it is idling the same as before. After cleaning my Iac it seemed to idle real nice. Took it around the block and now it is the same as before!!!
Should I buy a new Iac?
Should I buy a new Iac?
IAC valves usually cause idle speed problems, either too high or too low, not rough idle symptoms.
Steve
Thread Starter
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Laughing Gas
Joined: May 2006
Posts: 1,211
Likes: 69
From: land of 10,000 lakes
I will check the EGR, but where is it?
Also when I said "rough idle" I think that the engine is idling too and is rough from that.
When I cleaned the Iac valve It idled alot better, But not for long.
Now I notice when I drive that I wants to stay around 7-800 rpm idling but jumps betwen that a 500 rpm. Which leaves to belive that it is the Iac thats needs to be repalced.
Also when I said "rough idle" I think that the engine is idling too and is rough from that.
When I cleaned the Iac valve It idled alot better, But not for long.
Now I notice when I drive that I wants to stay around 7-800 rpm idling but jumps betwen that a 500 rpm. Which leaves to belive that it is the Iac thats needs to be repalced.
New User
Joined: May 2006
Posts: 4
Likes: 0
I replaced the EGR about a year ago. That did not solve the porblem. The vehicle is a 1998 Ford Explorer XLT 4.0 liter. Where is the Iac located? I turned the idle screw to make it Idle faster as I noticed that it did not run as rough while stopped in drive. It is mostly OK while in the N position.
Thanks for your reply
Thanks for your reply
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More Turbo
Joined: Oct 2001
Posts: 539
Likes: 1
From: San Mateo, CA
I had a "high idle" situation that cleared up for about 3 weeks by cleaning the IAC- truck had about 60k on it. The high idle returned and I replaced the IAC and it has run fine since(130k now). Cost me $72 I believe. I recall one dealer wanted $95 for the IAC.
It did not have a rough idle issue. The high idle caused me to use the brakes more but it did not run rough.
It did not have a rough idle issue. The high idle caused me to use the brakes more but it did not run rough.
Thread Starter
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Laughing Gas
Joined: May 2006
Posts: 1,211
Likes: 69
From: land of 10,000 lakes
Originally Posted by pedeen
I replaced the EGR about a year ago. That did not solve the porblem. The vehicle is a 1998 Ford Explorer XLT 4.0 liter. Where is the Iac located? I turned the idle screw to make it Idle faster as I noticed that it did not run as rough while stopped in drive. It is mostly OK while in the N position.
Thanks for your reply
Thanks for your reply
I replaced the iac with a new one and it did not help at all. So I put the Old one that I cleaned back on. My idles around 650 while in drive and in park. I though that while in park it should idle higher... right? Maybe I should just turn my idle screw up a little and see if that hleps. if I did are there negaitve things that can happen??
PILOT10- after cleaning your Iac it took three weeks for it to clear up??
More Turbo
Joined: Oct 2001
Posts: 539
Likes: 1
From: San Mateo, CA
Ford FX4,
After the IAC was cleaned it worked properly for about 3 weeks. And after 3 weeks it wasn't near as bad as just before it was cleaned but I was more sensitive to the change in driveability. I replaced right away after the high idle started to return as I was tired of running past the limit line at stop signs.
After the IAC was cleaned it worked properly for about 3 weeks. And after 3 weeks it wasn't near as bad as just before it was cleaned but I was more sensitive to the change in driveability. I replaced right away after the high idle started to return as I was tired of running past the limit line at stop signs.
Thread Starter
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Laughing Gas
Joined: May 2006
Posts: 1,211
Likes: 69
From: land of 10,000 lakes
Also there is a little ticking noise coming from the engine compartment toward the middle too pass. side from the cab. Could this be part of the problem? And when the enigne is rough it idles around 650 and almost sounds like it whats to die..not a real smooth sounding idle. I did change the Iac right at autozone and did not noitce a difference returned it and put the old one back on...maybe I did not give it enough time to relearn? When I did clean the old Iac I did noitce that I idled around 800 in park, nice and smooth. and it wants to hold around 800 in park but slowly falls down to 650, kind of jumpee,back and frouth.
Lead Driver
Joined: Jul 2003
Posts: 7,406
Likes: 52
From: Wheatland, Mo
The IAC is electronic. When you changed it out, you should of also disconnected your battery for about 10 minutes allowing time for the computer to clear and re-learn the signals it will get from the new part.
You can change parts in the Autozone parking lot? nice...here they have signs up all over the lot that say it is illegal to do that. You get fined by the local cops if they catch you.
You can change parts in the Autozone parking lot? nice...here they have signs up all over the lot that say it is illegal to do that. You get fined by the local cops if they catch you.
New User
Joined: Aug 2006
Posts: 2
Likes: 0
rough Idle
I have a 2004 f-150 and it also is having trouble idling it dies but only when the truck gets warm and then it starts right back up. Took to the dealer and they replaced the cam sensor and that did exactly nothing problem still exist anyone please help. Could this be the Iac and where is it located on the Triton Motor
I have a 2004 f-150 and it also is having trouble idling it dies but only when the truck gets warm and then it starts right back up. Took to the dealer and they replaced the cam sensor and that did exactly nothing problem still exist anyone please help. Could this be the Iac and where is it located on the Triton Motor
Thread Starter
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Laughing Gas
Joined: May 2006
Posts: 1,211
Likes: 69
From: land of 10,000 lakes
Do you have the 5.4 3v? If so, they do not have an Ivac I believe.
Someone correct me if I am wrong.
Josh
(By the way I no longer have the 02 that I had the problem with, that and about 6 other major things going to hell on it , pick up a new o6, Look at signature)
Someone correct me if I am wrong.
Josh
(By the way I no longer have the 02 that I had the problem with, that and about 6 other major things going to hell on it , pick up a new o6, Look at signature)
Last edited by Ford Fx4; Aug 22, 2006 at 09:40 PM.