- Jul 7, 2005
- 1,563
- 1,197
- 164
Codes 41/91 are typically both related to the O2 sensors not reading correctly. Most of the time it is the ground wire not being hooked up. There is a ORANGE ground wire with a ring connector that mounts to the back of the intake. You should see it on the passenger side where the throttle body is coming from the main wiring harness.
The car can also run without the IAC valve too, so you can just adjust the throttle set screw on the throttle body to lower the idle speed to the correct idle range you want. Just make sure to do this on a completely warm engine
The car can also run without the IAC valve too, so you can just adjust the throttle set screw on the throttle body to lower the idle speed to the correct idle range you want. Just make sure to do this on a completely warm engine