Question about 1999 Ford Expedition

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Where is the idle air controll valve on a 1997 expedition xlt 5.4

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The IAC valve is located on the throttle body. Just in case you don't know, the throttle body is when the air duct tube from the air filter ends. Here is a link so you can see what the IAC looks like and know what you are looking for: http://www.autozone.com/autozone/catalog/parts/partsShelf.jsp?categoryDisplayName=Engine+Management&fromType=parts&fromString=search&parentId=cat30067&currentPage=1&filterByKeyWord=iac&isSearchByPartNumber=false&navValue=15900207&categoryNValue=15999999&fromWhere=&itemId=prod61721&displayName=Idle+Air+Control+Valve&searchText=iac It is held on by a couple of screws so it is very easy to change out. Good luck. Thanks for rating my response and for using FixYa!

Posted on Jun 28, 2009

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1 Answer

Having problems with an 1997 ford expedition will not start cold


have your idle air control valve checked. go by your local auto parts store and get them to pull the trouble codes, some places will do this for free.

Mar 19, 2013 | 1997 Ford Expedition

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This problem is commonly caused by a dirty automatic idle speed control valve and throttle valve but always run a OBD2 fault code as well as the cleaning procedure. Buy a can of throttle valve cleaner (do not use carburetor spray cleaner!) from NAPA or Carquest (made by CRC chemicals) and spray it into the air intake while the engine is running, use up about 1/2 the can, engine will try to stall hold the speed up, shut it down and let it soak for 30 minutes, restart and blow out the remaining fluid, shut it down and disconnect the negative battery cable for 5 Min's to reset the base idle control


Oct 14, 2012 | 1997 Ford Expedition

1 Answer

I have 97 expedition, running good except for coming to an Idle, gets shaky like its out of fuel, has died on me several times coming to a stop. Other than that it runs great accelerats great ?


Check the fuel filter if it needs cleaning. Inspect the vacuum hoses and wiring for loose ones or worn out ones.

This may also be caused by dirty idle air control valve or a faulty one.

Aug 22, 2011 | 1997 Ford Expedition

1 Answer

Service engine soon is on and the truck idles low when cranked.


Take the vehicle to an autoparts store and have them use a scan tool to retrieve the fault code(s) stored in the computer. Most stores offer this service at no charge. The codes will help identify the problem. Sounds like a faulty Idle Air Control (IAC) valve to me, but the codes will narrow the reason down. Hope this helped and best wishes.

Jul 25, 2009 | 2000 Ford Expedition

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Expedition 2000 XLT. The car revs at start up to 1.2 then slowly goes down to .8 then when I start to drive RPM is down to .5 or .6 and the engine becomes rough. I went to a Car Shop and paid 1800 for a...


Actually in most cases this would tell me a a dirty/defective IAC  Idle Air Control valve , these have dropped in price to about 55 buck either that the EGR valve is sticking 

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Replace "idle speed motor" (also known as idle air contrl valve).

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