IAC Valve Test
#1
IAC Valve Test
Hey guys wats up? Having a little problem here with my 03 mach 1.
While coming to a stop RPM's stay about 1.2k - 1.3k then in a few seconds RPM decreases to the point car stalls out. I heard this could be my IAC valve. I cleaned it along with MAF sensor, but i heard about a test to check if the valve is working properly by disconnecting the 2 bolts and leaving the electrical connection on and put the key to the "on" position (without starting the engine), the IAC should move up or down, if it does its fine. Mine is moving down like not even a mm(you can hardly tell) and then goes right back to originally position.
I am replacing the valve anyway but i dont think its working properly or is it?
While coming to a stop RPM's stay about 1.2k - 1.3k then in a few seconds RPM decreases to the point car stalls out. I heard this could be my IAC valve. I cleaned it along with MAF sensor, but i heard about a test to check if the valve is working properly by disconnecting the 2 bolts and leaving the electrical connection on and put the key to the "on" position (without starting the engine), the IAC should move up or down, if it does its fine. Mine is moving down like not even a mm(you can hardly tell) and then goes right back to originally position.
I am replacing the valve anyway but i dont think its working properly or is it?
#2
I had the same problem in my Mach1. Do you have a intake on their?
When I installed my K&N Intake I forgot to re-install the screen in the intake tube and it kept doing the same thing yours is. I put the screen back in and problem solved. If you don't have a intake disregard everything I just said lol.
When I installed my K&N Intake I forgot to re-install the screen in the intake tube and it kept doing the same thing yours is. I put the screen back in and problem solved. If you don't have a intake disregard everything I just said lol.
#4
Ok next solution. Their were a couple threads on this I believe over on Mach1registry.com and some people said this happens in the stock tune from the factory and that the computer needs to be re-flashed and car needs to be tuned. A couple guys over their went and got their car dyno tuned and problem was solved.
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