Moranstan
New Member
- Joined
- October 11, 2017
- Messages
- 6
- Reaction score
- 0
- City, State
- Moran, Texas
- Year, Model & Trim Level
- 2005 Ranger STX
2005 Ranger 3.0 STX
My check engine light comes on if I let it idle with the A/C on. PO303 and PO316
I replaced plug wires, plugs, coil pack, #3 injector, fuel filter and pump unit and checked injector wiring with noid lights, I also bought the kit to clean MAF sensor and throttle body.
I really thought the pump replacement had fixed it because it starts easier but I drove it 30 miles after replacing the fuel pump and filter and stopped and let it idle with the A/C on and the check engine light came on. It runs great on the highway but it has a somewhat rough idle.
What do I replace now? O2 sensors??
My check engine light comes on if I let it idle with the A/C on. PO303 and PO316
I replaced plug wires, plugs, coil pack, #3 injector, fuel filter and pump unit and checked injector wiring with noid lights, I also bought the kit to clean MAF sensor and throttle body.
I really thought the pump replacement had fixed it because it starts easier but I drove it 30 miles after replacing the fuel pump and filter and stopped and let it idle with the A/C on and the check engine light came on. It runs great on the highway but it has a somewhat rough idle.
What do I replace now? O2 sensors??