Should my engine idle while in park?

mooki33 · #1 Apr 17, 2009, 09:43 AM

I just bought a 2005 Nissan Altima 2.5s 4 cylinder. I've had the car less than a week but I've noticed while sitting in park with the heat on the engile idles up ever so slightly. It does this every minute or so. Is that normal?

mooki33 · Apr 17, 2009, 10:15 AM

Quote:

Originally Posted by txgreasemonkey

Clean the Idle Air Control Valve (IACV), throttle plate, and throttle body:

http://www.askmehelpdesk.com/cars-tr...ml#post1054149

Afterwards, replace the air filter.

Thank you very much. Is it harmful if I don't do it right away?