P1507 (idle control system malfunction)
My 02 wrx gave me the dreaded CEL
last night. I had the code checked
and it came up p1507 (idle control
system malfunction). The car drives
fine, but is slightly choppy in idle.
Barely noticeable as it gets warm but
right as you start it, you can tell. Also
when your letting out the clutch
super slow in first the rpms are also a
little jumpy. I've read up online and
it's recommended that I clean the
idle air control valve or replace it.
Would cleaning it really well (as they
tend to get gunked up) fix the
problem the same as replacing the
$300 part?
