The idle air control valve is on the throttle body below the throttle positioning sensor. To test first, use a test light on the connection coming to it with the vehicle running. Rev the motor and each terminal should make the light flash. In this case it is most likely the sensor. If they do not flash it is in the wiring or pcm
My 2000 Jeep Grand Cherokee Laredo 6 cyl started veh it started to shake was able to drive a short distance and turned off and it does not turn on, changed the gas filter and it still does not turn on.
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my car wouldn't start and it came back code p0505 and they told me it was something to do with the idol control or something like that anyone know what could be wrong?
My '99 Cherokee Sport has the same issue. I found out that my sister had been driving it for about 3 or 4 days without a gas cap and it stalled and wasn't able to start/stay running. It would start once in a while but would die right after starting. And if I stepped on the gas pedal it would die even faster. Checked for fuel pressure at the releif valve and a few drops cam out and not a squirt. I had codes P0505 - Idle Air Control Motor Circuit, P0122 and P0123 - Trottle Position Sensor Low/High. I replaced the TPS and dropped the tank (it was full) and tested the fuel pump and was ok so I replaced the Fuel Pressure Regulator and pump strainer/screen (they were pretty dirty). What and where is the "Idle Control Motor"? Cant seem to find it or any info in my Haynes manual.
The codes indicate a problem in the circuit, it can be the sensor, the wiring the computer and so on, replacing a sensor without proper testing is like throwing money away.
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