iacv
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iacv
i have a 1999 ranger with a 4 cyl eng my check eng light came on went to auto zone they said it neded a idle air control valve. got new one and installed it drove it and check eng light came back on.can you tell what else it might be --thanks,darrell
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Joined: Jan 2004
Posts: 13,851
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From: SW Va
Welcome to FTE.
What was the trouble code Number they pulled???? If you don't have it, have them scan the computer again, get the trouble code Number & post it here & we'll see if we can come up with a diagnosis. Dont buy anything else until you work up a reasonable diagnosis.
Any additional clues on the vehicles behavior that you can provide will likely be helpful.
Also how many miles on it & where you are on all past & present due scheduled maintenance & any repairs in the past.
Did this problem come about suddenly after some event????
What was the trouble code Number they pulled???? If you don't have it, have them scan the computer again, get the trouble code Number & post it here & we'll see if we can come up with a diagnosis. Dont buy anything else until you work up a reasonable diagnosis.
Any additional clues on the vehicles behavior that you can provide will likely be helpful.
Also how many miles on it & where you are on all past & present due scheduled maintenance & any repairs in the past.
Did this problem come about suddenly after some event????
Moderator
Joined: Jan 2004
Posts: 13,851
Likes: 111
From: SW Va
P1506 is for high idle speed & suspecting the IAC is reasonable, as it's a common problem part, But other things can also cause high idle speeds.
Like an electrical problem to the IAC, sticking open IAC, I know you said it's new, but that doesn't automatically make it good, because they're not 100% tested, if they're tested at all, computer problem, acting out evap system, vacuum leak & this would include a stuck open PCV valve or leaking connection to it & all other vacuum sources, dirty sticking open throttle plate, binding throttle cable ect, ect. So you need to look deeper & check the things listed.
More thoughts for consideration, let us know what you find.
Like an electrical problem to the IAC, sticking open IAC, I know you said it's new, but that doesn't automatically make it good, because they're not 100% tested, if they're tested at all, computer problem, acting out evap system, vacuum leak & this would include a stuck open PCV valve or leaking connection to it & all other vacuum sources, dirty sticking open throttle plate, binding throttle cable ect, ect. So you need to look deeper & check the things listed.
More thoughts for consideration, let us know what you find.
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