How can you test for IAC failure ?

Ga_50_foxbody · April 3rd, 2007, 10:43 AM

It seems to be a new IAC valve for the 2.3 is about $100. I will buy it if I have to but I want to be sure its failed and not just dirty.

Is there a way I can test this ? Either way Im going to at least remove it and clean it out and give it another go before I open up the wallet for a purchase.

Please Advise

Thanks ,

TurboLX · April 3rd, 2007, 11:40 AM

well how does the car act?

Ga_50_foxbody · April 3rd, 2007, 04:31 PM

its fine mostly during normal driving but when I let it idle like at a stop light it sputters and shuts off.

It does this in park as well. I filled up the tank w premium and ran it for a bit to see if it was some messed up gas but no go its still acting up. As long as I give it gas it's fine but when I come off it the car wont stay up.

it does this when the RPM's drop under 1k. but if I keep it over all is well

TurboLX · April 4th, 2007, 01:24 PM

yep thats it then, you can find a cheaper IAC from ebay or a donor, there all pretty much universal, the 5.0 ones should fit to

beeker · April 6th, 2007, 10:58 AM

try cleaning it out first with some carb cleaner also I would try cleaning and re setting the TPS also.

Ga_50_foxbody · April 8th, 2007, 07:26 PM

I cleaned it out and put i tback on and the issue was still the same so I was lucky enough to find another IAC for "FREE" and the car runs like a champ.

my tranny was acting up and rear was making noise so I got all that replaced as well.

Total cost of everything $250.00 - I love Georgia Salvage Yards

TurboLX · April 9th, 2007, 09:28 AM

haha if it isnt a junkyard its ebay

beeker · April 9th, 2007, 10:26 PM

Originally Posted by TurboLX

haha if it isnt a junkyard its ebay

I prefer top call them "recycle facilities"

TurboLX · April 10th, 2007, 12:58 PM

lol

April 3rd, 2007, 10:43 AM	#1
Ga_50_foxbody Regular Join Date: Dec 2006 Posts: 81	How can you test for IAC failure ? It seems to be a new IAC valve for the 2.3 is about $100. I will buy it if I have to but I want to be sure its failed and not just dirty. Is there a way I can test this ? Either way Im going to at least remove it and clean it out and give it another go before I open up the wallet for a purchase. Please Advise Thanks , __________________ 1990 5.0 LX - Manual (for play) 1991 2.3L LX - Auto (for street) 1989 2.3Turbo - In the Works 1988 Thunderbird Turbo Coupe 2.3Turbo - (K&N , Gillis Boost Valve, Auto to T5 SWAP ) Yeah I'm a mustang Newbie - wanna fight about it ?

April 3rd, 2007, 11:40 AM	#2
TurboLX I Post Entirely Way Too Much 1990 Mustang LX Turbo 8.67@165.91 mph Join Date: Oct 2006 Location: Hidden In NY Posts: 8,487	well how does the car act? __________________ Wiring Diagrams, TSB's, OBD Service Codes and Engine Diagrams Available. PM For Info Myspace *Small Block Posse*

April 3rd, 2007, 04:31 PM	#3
Ga_50_foxbody Regular Join Date: Dec 2006 Posts: 81	its fine mostly during normal driving but when I let it idle like at a stop light it sputters and shuts off. It does this in park as well. I filled up the tank w premium and ran it for a bit to see if it was some messed up gas but no go its still acting up. As long as I give it gas it's fine but when I come off it the car wont stay up. it does this when the RPM's drop under 1k. but if I keep it over all is well __________________ 1990 5.0 LX - Manual (for play) 1991 2.3L LX - Auto (for street) 1989 2.3Turbo - In the Works 1988 Thunderbird Turbo Coupe 2.3Turbo - (K&N , Gillis Boost Valve, Auto to T5 SWAP ) Yeah I'm a mustang Newbie - wanna fight about it ?

April 4th, 2007, 01:24 PM	#4
TurboLX I Post Entirely Way Too Much 1990 Mustang LX Turbo 8.67@165.91 mph Join Date: Oct 2006 Location: Hidden In NY Posts: 8,487	yep thats it then, you can find a cheaper IAC from ebay or a donor, there all pretty much universal, the 5.0 ones should fit to __________________ Wiring Diagrams, TSB's, OBD Service Codes and Engine Diagrams Available. PM For Info Myspace *Small Block Posse*

April 8th, 2007, 07:26 PM	#6
Ga_50_foxbody Regular Join Date: Dec 2006 Posts: 81	Thanks I cleaned it out and put i tback on and the issue was still the same so I was lucky enough to find another IAC for "FREE" and the car runs like a champ. my tranny was acting up and rear was making noise so I got all that replaced as well. Total cost of everything $250.00 - I love Georgia Salvage Yards __________________ 1990 5.0 LX - Manual (for play) 1991 2.3L LX - Auto (for street) 1989 2.3Turbo - In the Works 1988 Thunderbird Turbo Coupe 2.3Turbo - (K&N , Gillis Boost Valve, Auto to T5 SWAP ) Yeah I'm a mustang Newbie - wanna fight about it ?

April 6th, 2007, 10:58 AM	#5
beeker Regular Join Date: Mar 2007 Posts: 107	try cleaning it out first with some carb cleaner also I would try cleaning and re setting the TPS also.

April 9th, 2007, 09:28 AM	#7
TurboLX I Post Entirely Way Too Much 1990 Mustang LX Turbo 8.67@165.91 mph Join Date: Oct 2006 Location: Hidden In NY Posts: 8,487	haha if it isnt a junkyard its ebay __________________ Wiring Diagrams, TSB's, OBD Service Codes and Engine Diagrams Available. PM For Info Myspace *Small Block Posse*

April 10th, 2007, 12:58 PM	#9
TurboLX I Post Entirely Way Too Much 1990 Mustang LX Turbo 8.67@165.91 mph Join Date: Oct 2006 Location: Hidden In NY Posts: 8,487	lol __________________ Wiring Diagrams, TSB's, OBD Service Codes and Engine Diagrams Available. PM For Info Myspace *Small Block Posse*

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