J4aday
New Member
- Joined
- Jan 5, 2015
- Messages
- 7
- Reaction score
- 0
- Points
- 0
- Location
- Daggett MI
- Vehicle Year
- 1991
- Make / Model
- Ford
- Engine Size
- 2.3L
- Transmission
- Manual
I have a 91 Ford Ranger with 2.3L. It will not spray fuel into the cylinders. Here is a list of what I have done, troubleshooted, and found.
1. Engine was missing. I found both coil packs were cracked. replaced them.
2. Plugs and wires were corroded. replaced all 8. gapped the plugs to .044
ran about 3 days and was missing again.
3. replaced ICM module, Mine was corroded and was not telling the coils to spark.
4. I verified I have a pulse with my crankshaft sensor and cam sensor and I do have spark! Yay
5.pulled the plugs again. DRY, BOO!
-So I checked the fuel pump. It works!
-Put the fuel pressure guage on the Schroeder valve and have 38psi.
-I also replaced the fuel filter.
6. I can fire the injectors with 12V from the battery and they all switch.
SO. I put a test lamp on the injectors while trying to start it but I dont see it flicker like they are turning on and off. It only dims slightly.
I am leaning towards a computer problem. Seems like it is not switching the negative sides of the injectors like the computer should. I also was able to start it with starting fluid but it would not stay running.
Any thoughts?
1. Engine was missing. I found both coil packs were cracked. replaced them.
2. Plugs and wires were corroded. replaced all 8. gapped the plugs to .044
ran about 3 days and was missing again.
3. replaced ICM module, Mine was corroded and was not telling the coils to spark.
4. I verified I have a pulse with my crankshaft sensor and cam sensor and I do have spark! Yay
5.pulled the plugs again. DRY, BOO!
-So I checked the fuel pump. It works!
-Put the fuel pressure guage on the Schroeder valve and have 38psi.
-I also replaced the fuel filter.
6. I can fire the injectors with 12V from the battery and they all switch.
SO. I put a test lamp on the injectors while trying to start it but I dont see it flicker like they are turning on and off. It only dims slightly.
I am leaning towards a computer problem. Seems like it is not switching the negative sides of the injectors like the computer should. I also was able to start it with starting fluid but it would not stay running.
Any thoughts?