trccccy
New Member
- Joined
- March 23, 2014
- Messages
- 7
- Reaction score
- 0
- City, State
- Calif
- Year, Model & Trim Level
- 94 Explorer
I have read the posts on the 173 code on the 94 explorer 4.0. I have replaced both the O2 sensor on the rt (passenger) side and the FPR. Left the battery disconnected for almost an hour after replacing the parts. Drove it for 10 minutes and the CEL came on. To my surprise the code 173 came back. The FPR vacuum line has vacuum. Any suggestions?