P1506 code = IAC Valve = NOT

[oblidi]

REcently purchased a 1998 Explorer Sport with 85K miles. The CEL came on that had a code for a vague problem with the Catalytic Converter. I cleaned everything with Throttle cleaner. That code did not reappear, but I did get another CEL with a P1506 code, indicating a bad Idle Air Control valve. I replaced the IAC valve with a new one, but the code (P1506) reappeared with in 10 miles. Any ideas what else to look out for ? Thanks.

 

[budwich]

potentially a vacuum leak problem resulting in higher than normal idle which the IAC then can't correct.