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Car Forum / Ford / Ford Mustang / August 2006Idle Air Control valve
97 GT mustang 63k trouble code P1443 (Evap Emission Control system control valve) from Autozone scanner. Book says Idle air control valve speed fault. Check engine light came on just as i finished filling tank. but it had come on 3 weeks earlier on a hot day (code was mistakingly erased). what do suspect is the problem? where is the valve? DIY? thanks for any help. bill > 97 GT mustang 63k trouble code P1443 (Evap Emission Control system > control valve) from Autozone scanner. Book says Idle air control > valve speed fault. Check engine light came on just as i finished > filling tank. but it had come on 3 weeks earlier on a hot day (code > was mistakingly erased). what do suspect is the problem? where is > the valve? DIY? thanks for any help. bill autozone is full of crap. evap control valve is small solinoid valve tucked into the corner of the engine compartment on the passenger side near the windshield. The part cost me ~$10 from a motorcraft distributor. If the code persists, just replace it. It can be cleaned to squeeze more life from it, but when I decided to just replace it I wondered why I had bothered. (I also had code 1443 as I recall for that) The idle air control valve is something entirely different and controls engine idle speed. You'll know when it's bad or needs cleaning when the engine won't idle unless you depress the gas pedal. This doesn't usually throw a code. At least it didn't in my case. I just cleaned it with throttle body cleaner and all was good. > The idle air control valve is something entirely different and > controls engine idle speed. You'll know when it's bad or needs > cleaning when the engine won't idle unless you depress the gas pedal. > This doesn't usually throw a code. At least it didn't in my case. I > just cleaned it with throttle body cleaner and all was good. ISC/IAC valve may cause various idle problems. Symptom is it gets sticky and may cause hard cold or hot start or idle too high, too low, adjust idle too slow.. etc. Most find that cleaning it only puts off the problem a while OR it changes the symptoms, - like from stalling to too high rpm. That IS a good indicator, however, you need a new one. Another indicator of the failure prone nature of these is the cost and availability.... everyone carries 'em and they're relatively cheap.  SignatureYeh, I'm a Krusty old Geezer, putting up with my 'smartass' is the price you pay..DEAL with it! >> The idle air control valve is something entirely different and >> controls engine idle speed. You'll know when it's bad or needs [quoted text clipped - 13 lines] > of the failure prone nature of these is the cost and availability.... > everyone carries 'em and they're relatively cheap. Buying a cheapass POC from AutoZone has the same effect as cleaning. SignatureI used to have abs. Now, I've just got ab. One big ol' Ab. - BigSkiff www.titanspot.com Pyongyang sounds more like the sound effect an ACME catapult makes as it goes off at precisely the wrong moment for Wile E. Coyote. - Cadbury Moose this am , the light went out. i thought check eng light stays on until someone resets it. what gives? >97 GT mustang 63k trouble code P1443 (Evap Emission Control system >control valve) from Autozone scanner. Book says Idle air control >valve speed fault. Check engine light came on just as i finished >filling tank. but it had come on 3 weeks earlier on a hot day (code >was mistakingly erased). what do suspect is the problem? where is >the valve? DIY? thanks for any help. bill > this am , the light went out. i thought check eng light stays on > until someone resets it. what gives? No, what happens is if the car goes through a 'driving cycle' and the problem did not re-occur, the MIL is commanded off. evap purge can be like that. Basically the solinoid is sticking. It got unstuck. |
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