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93 camry 2.2l with idle problems. Son in law replaced a couple of sensors and it idled at around 2500 rpm. Replaced them with the originals and it is now idling around 1200. Any ideas?
 

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replace throttle position sensor and idle control valve. I got the vehicle after he replaced them. It was idling high when I got it. As far as I know they are the only two. Replaced the original after cleaning the idle control valve and it runs fine, but idles too high.
 

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Read the above. Also check for vacuum leaks and cable interference.
 
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