Me again. My 1988 4.2 YJ is once again giving me problems. Just installed a rebuilt 2bl Carter 2 weeks ago. Flushed the fuel lines and changed the filter when I did it. First had problems with the choke pull-off, I didn't have that fixed for a day before I started having more trouble. Now, hot or cold, it just won't idle. When I push the clutch in to come to a stop, the RPMs fall first to about
1000, then to about 200, then the engine dies. It does it with or without the brakes applied. I checked everywhere for vacuum leaks on Saturday, found only one, and subsequently fixed it. It still doesn't idle. I checked the EGR for proper operation (the pintle moves back and forth at high RPMs as I believe it should). Plugged off the vac line to the brake booster and still, it stalled. The vac reservoir under the battery also functions. I pulled my distributor cap, it was clean as a whistle in there. My spark plugs have about 300 miles on them, and yes, I gapped them correctly.Other information that may or may not apply to the situation: it didn't start doing this progressively. It ran perfect all day, then at one stoplight, it just died. Also, since it started happening, I can smell melting plastic coming from somewhere under the hood, but I can't for the life of me locate the source. Does anyone have ANY ideas? I'm at the end of my rope.