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post #1 of 4 (permalink) Old 05-07-03, 05:37 PM
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IAC trouble


I ran the OBD II code reader on my car and it came up with this 1506--IAC overspeed error. Now, I replaced the IAC itself, and still, get the error. I didnt replace the gasket being that I couldnt get it in stock. Anywho, any suggestions on what this error means and how I might go about fixing it.

I can describe what is happening when I drive. When I turn the car on, the idle is the normal idle sounds, but it takes a long time to get down to lower rpm, such as it kind of draws out. THe same is when i put the car in neturl. It idles high then very slowly tapers down to a lower idle. Now, when I put the A/C on, the car acutal picks up speed when I dont hit the gas pedal, this is what really freaks me out. I can feel the car trying to move foward when I have the brake on only when the A/C is on.

Sorry, I forgot to mention that it is a '99 Escort.

Thanks in advance

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post #2 of 4 (permalink) Old 05-07-03, 08:42 PM
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Location: Milwaukee, WI
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Im not sure, but I can look it up. What does IAC stand for? Also, not replacing the gasket could be your problem. You have to replace gaskets when you pull something off of one. A leak could cause this kind of problem.
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post #3 of 4 (permalink) Old 05-07-03, 09:59 PM
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You try resetting the ECU? Possibly, the computer needs to remap if you changed a part.
post #4 of 4 (permalink) Old 05-08-03, 01:54 PM
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First off, thank you for your help.

Ok, IAC stands for Idle air control (IAC) valuve.

Next, yes I did reset the computer, and each time i ran the code sacnner on it again it came up with 1506.

Thanks again.

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