Quickbird144

Alright so today I replaced my 02 sensors. They looked like garbage so knocked those out. Those codes are cleared. Now I have these 4 codes with KOER:

21-Engine Coolant Temperature (ECT) Sensor Out Of Self Test Range
94-Secondary Air Injection Inoperative
44-Secondary Air System Inoperative
34-EGR Valve Position/Pressure Feedback EGR Voltage Above Closed Limit (Others)

I'm a bit confused on 94 and 44. I'm getting 34 because the PO failed to hook up the EGR vacuum and I have connections just sitting there near my passenger strut tower.



I'd like to get my EGR hooked back up. Could anyone provide actual pics of their EGR's? I tried going off of the vacuum but it doesn't help much when nothings there. I've nothing to go off of. Thanks for any help!

g2_5point0

I get 94 and 44, too. however im pretty sure it's due to the fact that my smog pump isn't hooked up, so you should see those too if you're not running it

Quickbird144

I hope so!

I'm still trying to improve my mpg (currently getting about 11-12 city) so next would be my EGR system.

Bubba 95SN

21 did you get the engine up to operating temperature before entering koer test?