Hi every one
After installing TBE , air intake, MBC 22psi, fuel pump, and a mail tune I am having CEL with code P0505 IAC Motor Circuit Malfunction
What could be the cause and how to solve it?
Thanks

 

Notice that I have EGR on my car, can the ideal valve be dirty from the EGR

 

Did you run a boost leak test. Somtimes my car throws a code after the test

 

In this country we don’t have boost leak test

 

I have gotten the same error,
only started when i installed my cosworth cams!


bump for you

 

Try adjusting your idle an extra 200-400rpm higher using the small screw on the TB. That made it work for me, two weeks without the fault already!

 

Its not a test someone else does....(well maybe) but a test you do yourself to make sure you aren't leaking any air from intercooler piping or other places. If you search on the forums here, there is a "how to" on how to do a boost leak test on your car.