The Nissan Path

Posted: **Thu Nov 05, 2015 3:04 pm**

Hey everyone,

Checked the codes today and have a new one, P0507 - Idle Control System RPM Higher Than Expected.

Truck is running just fine, and RPMs are not high, so I am confused.

I did replace my Brake Cylinder Check Valve last night, and it made a huge difference in the smoothness of the engine and the action on the brakes. All was improved.

Any ideas? I am going to clear it and see if it comes back.

t

Posted: **Thu Nov 05, 2015 7:41 pm**

I could see the brake check valve causing the P0507 code to set. Erase the code and it will probably be fine. If not, perform an idle air volume relearn.

Posted: **Fri Nov 06, 2015 5:38 pm**

I'd also check for vacuum leaks (might try with some starter spray, spraying it carefully on non-visible areas of vacuum hoses and when you hit the hole, vacuum will soak starter spray, engine would rev up and you've found a leak). Check for leaks also near air intake valve.

...and cleaning air intake valve could also help, as it is a part of regular maintenance.