2stroke
Explorer Addict
- Joined
- August 7, 2013
- Messages
- 1,169
- Reaction score
- 39
- Location
- 55302
- City, State
- Annandale, MN
- Year, Model & Trim Level
- 1993 Ford Explorer Sport
If you are qualified to change spark plugs, you are qualified to clean fuel injectors. Its easy as pie, especially since you don't have to deal with the egr tube. you have to move some wires and things out of the way, but other than that its mostly unbolt the plenum, unbolt the fuel rail, and there it is. I've done it in a parking lot in 30 minutes. If you want to avoid doing it in a parking lot, make sure you put the fuel injectors in the fuel rail first, then guide them into the head. If you do it the other way around, you can screw up the o rings. All you need for the job is plenum gaskets at about $10, and a couple bucks for injector o rings. Tools are just basic except you need a socket torx for the fuel rail studs. I bet you could do the whole job with a flat screw driver, a 13 mm socket with extension, and whatever size the torx socket was. While cleaning your fuel injectors will certainly help it run better, I don't know if it will fix the intermittent rough idle. I've never fixed mine. There is a super easy test for the TPS if you have a volt meter, and if you are willing to spend a little time, you can actually adjust them. I think OEM tolerance is pretty large, something along the lines of .8-1.2 volts. For peak performance, I think it should be .94-.98 volts. Don't quote me on those numbers, but if you ream out the two holes, you can actually turn it to adjust it perfectly. Your IAC won't cause this problem. It simply affects what speed your engine idles. At. You could clean your MAF if you haven't already. Like I said, I've done all these things with no change to the rough idle. Normally it idles ok, and runs great. They never idle silky smooth. What I think it is, is a simplistic computer. When you go to start it up, it either senses hot or cold start. This is just a guess. When it senses cold for whatever reason, it dumps too much gas at start up, and idles poorly until you clear it out. There is no fix for that, if that is the case.