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#1
01-05-2004, 04:39 PM
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'85 325e: TPS vs Idle control valve?
Hi,
I have narrowed my problem down to the Throttle Position Sensor and the Idle control valve. Does anybody know exactly what each of these do? Thanx! 
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#2
01-05-2004, 08:34 PM
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Yep sure do
The TPS is set to send a closed signal to the ECU and the ICU when throttle is closed.
IAV is set to actuate to keep the idle at a set RPM. Do you know Sam? http://www.mesaperformance.com/faqs/idle.html But if the issue is a high looping idle pay attention when Sam writes about a penny with a 1/4 inch hole drilled in it. Later,
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