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November 6th, 2006, 12:35 PM
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IAC Bad or Normal? Resetting IAC?
I pulled my IAC out to clean it off and was wondering if I should be able to move the plunger a little in and out? If I hold it in my hand and push down on it with my thumb it feels like it moves about 1/32nd or so. The car has almost 200K miles on it and I am betting it is the original so just to be safe I may pick up a new one. What do you think?
I read on the GNX site on how to reset your IAC using a scan tool but is there a way you reset a IAC without a scan tool?     
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November 6th, 2006, 07:39 PM
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Yes, it is has a very rough idle to it right now. I am planning to replace all the vaccum lines, the PCV valve (see my post), and IAC if I need it. I have already put new MSD wires on it, NGK TR5 plugs, new AC Delco O2 sensor, and a new transmission mount. So far, no improvement in idleing. I am hoping to see an imporvement with all vac. lines and IAC.
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November 6th, 2006, 08:51 PM
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A scantool would be very wise to get when you can afford one. It makes finding problems easier....trust me
 Mine idles fine even with the IAC at zero !!! But with that kinda mileage its probably the vacuum lines.HTH Oh yeah do a little research and make sure you find the right size hoses when replacing...don't ask how I know that!!
__________________
89 TTA #602 its alive again!!  89 LX 5.0 Convertible 03 Pilot EX  03 Cobra-plenty of stuff Company Beater for the days!    
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November 6th, 2006, 11:15 PM
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Sounds like a scan tool is going to be the next tool on my list. The correct size hose for the majority of the car seems to be 7/32. Almost all of mind still says GM on it and even has 7/32 printed on it.
__________________
Jeff Current Vehicles: 1989 Turbo Trans Am #670 1989 Trans AM GTA Blk/Blk 350 T-top 1998 Honda Accord Coupe "Life is like racing, it goes by fast and has many turns"
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November 6th, 2006, 11:25 PM
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November 7th, 2006, 07:46 AM
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Quote:
__________________
89 TTA #602 its alive again!! 89 LX 5.0 Convertible 03 Pilot EX 03 Cobra-plenty of stuff Company Beater for the days!
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November 7th, 2006, 12:38 PM
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A while ago I tried getting input on testing the IAC. No one could tell me anything so I had to rely on scan numbers. Neither car could get down past 40. When I chaned them for brand new IAC's both cars immediately dropped into the proper numbers and the idel smoothed out nicely. BTW, you'll need to play with the TPS in tandem with IAC. Not as hard as people make it seem. Best price for a new IAC I found was at Postons... FWIW..
 Good Luck
__________________
Just some slow TR's that are still faster than "my1stgn". 
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