Hey guys i have a 89 GXL and when im cruising on the highway at a steady speed the check engine light comes on and if i change the throttle input (get off and back on it the code goes away. I pulled the code and it shows code 17 feedback system Sensor output not changed after 25 sec. (FD) or 10 Sec. (FC) In feedback zone what sensor is this specifically talking about? at cruising i would imagine most sensors read in a generally the same.

 

o2 sensor.

 

so is this like a lazy o2 sensor or is it completely dead i have a wideband in the car as well as the primary and the afr is 14.5-5.3 cruising and it goes lean as soon as the code comes on.

 

Sounds like 02 sensor. If you use BOSCH you are liable to continue to get the Code 17 even after replacement. I recommend NTK/NGK. But I don't know about Wideband?

 

don't know, code says the output of the o2 sensor doesn't change (when it should) for 10 seconds.