92' Civic Runs Fine, but intermittently shuts off.
So here's the deal. A couple weeks ago my civic just shut off and would not start again. I went through and gave it a full tune-up. (spark plugs, wires, filters, cap & rotor) I ended up solving the problem when I replaced the Ignition Control Module and Coil. I also had some bad gas that had water that was freezing up on me. All the problems seemed to be solved with the ICM, Coil, some new gas and some Heet. So I ended up taking the car on a trip (for the holidays). Everything was going fine, ran like a top all the way there, and most of the way back. I was coming down this hill and all of the sudden it just started lurching. (my foot wasn't on the gas, as I was going down a hill). I stopped at a gas station not even a quarter mile away. When I went to start up the car it started right up, then just quit. I tried to start it again and it started up fine and ran. Going down the road, the rest of the way home (about 40 miles), it occasionally lurched. I brought it home and left it sit overnight. When I tried to start it the next morning, it would fire up fine and run, then just shut off. It did this about 6 times. Finally it stayed running. I took it straight to the mechanic. He hooked up it up to the diagnostics, and the car would not repeat what it had done. He couldn't find the problem. It ran fine all the way home from the mechanics, I shut it off and started it a couple times in between the mechanics and home. The mechanic also said that it did not shut off the entire day that he had it. I do have a check engine light when I before I start it, and it does go out. I also have fuel pump. I checked the main relay when I was searching for the problem last time (coil and ICM), and it clicked twice before the car started. Could the main relay be intermittently failing? Or is there something else? Any help would be great!