Taurus Car Club of America : Ford Taurus Forum banner

1 - 7 of 7 Posts

·
Registered
Joined
·
78 Posts
Discussion Starter #1
I replaced the IAC because it would stall when cold when I put it in drive. The new IAC fixed that problem now I have a new one. The IAC is too active. Something is making it open and I don't know what it is. As soon as the gas pedal is just tapped the idle air opens to 1500 rpm and stays there until the car comes to a complete stop then after a second the rpm will drop spike up again and then drop. I've noticed that if the car is coasting at 10 kmh the IAC holds the car at 1500 rpm. The car basically drive itself this is really hard on gas and brakes. Can someone give me some ideas ? The car has no EGR and I don't see any vacuum leaks.

I should also add that I have scanned for codes and all I get is 13 - Unable to achieve low rpm test limit. I knew this code was going to be there before I even started.
 

·
Premium Member
Joined
·
569 Posts
Did you reset the computer? Even if you did, you may have not reset the idle correctly. Here's one method:

Disconnect the battery and pump the brakes to discharge the computer. Leave the car alone for a period of time (probably around 15 seconds), then do this:

QUOTE
The correct (and only way) to set your idle in the V8 SHO is to drain the brain, start the car and let it idle in park until it settles down (20 seconds or so), move the gear selector to drive and wait for it to learn, then turn on MAX A/C when still in drive and let it learn, then shift it back to park with the A/C still on and after a few seconds it should be all done.[/b]
(V8sho.com)
 

·
Registered
Joined
·
78 Posts
Discussion Starter #3
Thats very interesting when I changed the IAC the battry was disconnected for 4 hours while I did a complete brake job then the lines were bled before the battery was hooked up. Would bleeding the lines be enough pumping of the brake pedal?

Maybe I just need to do that make it learn right qoute. I never done that before. I have the 3.0 vulcan. The AC doesn't like to kick on when below 0 C because of a ambient air sensor I suspect.
 

·
Registered
Joined
·
78 Posts
Discussion Starter #7
Just thought I would give you all the conclusion. The problem was the throttle body flap. I ripped one out of a 3.8 and put it in my car and problem solved. It runs like brand new again.
 
1 - 7 of 7 Posts
Top