 what type of IAC 7afe |
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 Jul 13, 2011 - 10:33 AM
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 Enthusiast  Joined Jan 13, '06 Currently Offline Reputation: 0 (0%)  |
I'm in the process of installing MS to a 7AFTE..first dose anyone one know anyone thats done this? i dont wanna reinvent the wheel. second, what type of IAC dose the 7afe have?step motor?
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Jul 13, 2011 - 10:46 AM
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 Enthusiast Joined Dec 9, '05 From Germany Currently Offline Reputation: 0 (0%) |
It should be a PWM valve, if there are no different IAC valves used in the 7A-FE. I've tried hard to find out more about it, especially the working frequency. This is what i found:
QUOTE The ECM varies the on time (duty ratio) for each coil. The difference in
strength between the two magnetic fields determines the position of the valve. The frequency is very high, 250Hz. This high frequency helps the valve maintain the correct position for proper air flow. |
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Jul 14, 2011 - 1:12 PM
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 Enthusiast Joined Mar 22, '07 From Houston, TX Currently Offline Reputation: 4 (100%) |
yes. it uses two coils though. id keep one at 12v and pwm the other. monitor them though... to make sure it doesnt overheat. if it gets too hot to touch, try adding a resistor to the static coil
-------------------- QUOTE "And, as always, your friendship, help, and dedication to the advancement of Texas Celica dominance is GREATLY appreciated. Thanks bro." -DEATH 1994 GT: V6 swap, 5speed E53 W/ LSD, All Power, now RED 1995 ST: SOLD @273k miles, Auto, all power, CarPC, White 1994 ST: Totaled, 5spd, all power, Red RIP 07/09/09 @ 241,810 1994 Lexus LS400: This is my new DD |
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