capena
New Member
- Joined
- April 17, 2004
- Messages
- 3
- Reaction score
- 0
- City, State
- Tempe, AZ
- Year, Model & Trim Level
- '94 Limited
I have two problems and don't know if related. First The engine hesitates often. Sometimes it will hesitate when I'm pulling out into traffic. On the hwy the rpms will start steadily decline until I punch the gas. This lasts for a while down cycle repeats itself. Replaced the fuel filter, but no change. I also get the check eng lite. Ran the diagnostic and got code 172 - lack of heated O2 switches indicates lean bank 1 and 536 - Brake on/off circuit failure. Also my fuel quantity gauge reads 0 all the time. Suspect bad fuel sending unit. Could I also have a bad fuel pump?