Where is the idle control valve on a 1997 Honda Civic EX engine size 1.6? I got the engine codes P0505, P1361 and P1362
P0505 IAC (Idle air control) valve system malfunction
P1361 Intermittent interruption in the TDC (top dead center) sensor circuit
P1362 No signal in the TDC sensor circuit
The IAC is on the throttle body, Try cleaning the port of the throttle body to see if that helps. To troubleshoot the IAC disconnect the connection to the IAC if the engine speed drops or stalls it is possible a cleaning will help
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