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2003 Deville
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I'm going to replace the IAC valve on my 2003 Deville. It looks pretty simple. Unplug, remove 2 screws, and replace. Am I missing something or is that all it is?
 

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Master of the Dark Art of Diagnostics
2003 DHS - two-2002 DHS, 2003 SLS, 1995 Sedan DeVille, 1989 Coupe DeVille
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19,272 Posts
I'm going to replace the IAC valve on my 2003 Deville. It looks pretty simple. Unplug, remove 2 screws, and replace. Am I missing something or is that all it is?
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WHY replace it? Cleaning is usually all it needs -
 

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Super Moderator
2003 Deville Base
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4,815 Posts
^^^^what he said. I've only ever had to clean my IAC and throttle body and it runs/idles smooth as silk. But to answer your question, yes, it's that simple.
 

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Administrator
2002.5 F55 CORSA STS, 2014 Explorer XLT FWD
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68,470 Posts
Remove it, clean the TB bore with cleaner and fuzzy pipe cleaners from a craft store, check that the IAC top hat plunger is screwed into the IAC body, clean that carefully. Should be good to go.

Why are you fooling with it anyway ?

IAC relearn - Key ON for 15 seconds, key off for 30. Start, let idle sequence ramp down, drive for 10 miles in the city/near suburban.

Normal cold start is 1200 rpm for 14 - 30 seconds, 900 for a while longer, 650 idle.
 
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