Fleetspell
New Member
- Joined
- Jun 5, 2017
- Messages
- 11
- Reaction score
- 0
- Points
- 0
- Vehicle Year
- 2003
- Make / Model
- Ford
- Transmission
- Automatic
Hi everyone. I'm new here. To start off, for whatever reason, I tried opening the "search this forum" button and it never would do anything. Like a dead link. Idk. I have an 03 2wd automatic ranger with the 2.3 and 173,000. Last week it started misfiring alot and cel came on and started flashing. When I got home I hooked it up to scanner. Sorry but can't remember those 2 codes now since I've erased them, but one was misfire on cylinder 3 and the other was misfire detected in first 1000 revolutions or something like that. It idles smooth and doesn't seem to miss. It only misses if I punch the gas hard or once it's put under load like in drive I can hold the brake down and hit the gas and it will start missing real bad but goes back to a smooth idle. So i did the obvious first which it needed. I changed the plugs and wires. I put in autolite double platinum and checked gap and installed motorcraft wires. There was no change. Then changed fuel filter. I checked fuel pressure at rail with 55psi. At this point I had nothing to do but check and clean. I visual inspected and checked every stinking linear inch of vacuum line on the thing, which the ones on the back and lower driver side are a pita. No vac leaks. I did compression test. 1-4, 180 175 178 180. I pulled fuel rail. Injector resistance was good. I bench tested and cleaned injectors to make sure the solenoid s we're in good order and to visually make sure I had a nice fine mist of carb cleaner coming out of them. Replaced orings on them and reinstalled. No change. I visually inspected coil and epoxy fill on bottom for cracks, no cracks. I checked primary and secondary resistance. Secondary was 1.1 on both. Primary was 33,000 I think. Those numbers might be backwards. I didnt write them down. I should have. I didn't because once I looked up the acceptable tolerance mine was within the range. So according to the numbers the coil was ok. I did a voltage test on tps. Nice and smooth and no change when tapping on it. I gave throttle body a super good cleaning. Reinstalled with new seal. Cleaned maf with crc maf cleaner. 3 years ago I blew out the front plug on the intake. You 2.3 guys know the stupid plug I'm talking about. Ireplaced it with a doorman intake. So I checked this and sprayed all over the intake with started fluid. It is in good shape. No leaks. I cleaned map. I checked the manifold runner diaphram on back of intake. It is working properly and the rod is hooked up. Replaced pcv valve. That's a shitty spot for that btw. Only thing I can think of is maybe the camshaft position sensor? Or the EGR valve. Can't even see the EGR valve back there, don't how I would even begin to take it off. Another shitty location. I checked and cleaned ALL engine compartment grounds for s and g. Took main engine harness apart. You know the one under intake on driver side that bolts together. I cleaned that with electronics cleaner and put dielectric grease back on all pins. The last test I did was hook an inductive timing light to each plug wire. I get a nice smooth light pulse on each wire. When I give it throttle quick. I get misses in flashes. On every wire. It's random. I don't know what else to check guys. Does the camshaft sensor provide the signal to the coil on this engine. I know dumb question. I have a new coil on the way. Got a good deal on it. I know u guys think I've wasted a lot of time on this. I have but I consider it way past time to do this stuff and Its a DD so it needs it. I'm sorry this sooo long but I wanted to be thorough and present as much info as I could so no one be guessing. Any thoughts would more than be greatly appreciated. Thanks guys.