- Joined
- Feb 21, 2024
- Messages
- 9
- Reaction score
- 4
- Points
- 3
- Location
- Oregon
- Vehicle Year
- 1986
- Make / Model
- Ford Ranger
- Engine Type
- 2.9 V6
- Transmission
- Automatic
- 2WD / 4WD
- 4WD
I have an 86 Ranger 2.9 that idles great but has problems accelerating. It stumbles. I have consistently gotten KOER codes of 33 and 25 and 77. The 33 code says the test was not initiated and I have tested the EGR valve, the sensor and the solenoid and they're all functioning properly. I thoroughly cleaned the passage on the upper intake as well. So why can't the EEC perform the test? Is the EGR system the cause of the stumbling? The fuel delivery system is new up to the FPR and pressure is within specs. I cleaned the injectors and the fuel rail and used a noid light to verify the electrical. The distributor is new but I had to replace the ICM it came with because it was faulty. Inspected the cap and rotor and used the multimeter to verify the plug wires okay and also replaced the coil. It's timed correctly. Just retested the TPS and the MAP sensor and the ECT sensor was replaced. Cleaned up all the grounds sa well. What should I be looking at now?