Well, I'm out of ideas guys. My 1994 2.5L Manual is dead. Ran the seafoam through it as instructed and it died while driving. It'll crank but not turn over. I've changed the plugs, CPS, ignition coil, distributor cap, rotor, fuel filter, and ECM. Still will crank but not turn over. Anyone have a new idea?
I have been there, I didn't quit and eventually figured my problem out. Sometimes wires and ground wires look good but are not. My brother had an 89 Wrangler that would not turn over. Everything checked out Ok. Turned out his battery cables were bad, even though they looked fine, I wouldn't count on the Seafoam having anything to do with it either. My jeep failed to start after I Added Burke system cleaner, it was not the cleaner.
Fuel system cleaner not Burke system cleaner. I have a 4.0 so my. Grounds are likely different. I had a ground from the block to the firewall. Also had one from the negative wire to the firewall and the engine to the firewall.
If you have one, it's time to bust out the multimeter. Start checking everything under the hood for voltage with the key in the run position. Paying close attention to the coil. You say it cranks, pull the distributor cap and see if the rotor is turning while cranking. These are just things to start with. The list gets longer. Good luck.
Ero sum: aut viam inveniam aut faciam = I will either find a way or make one
Grounds are the same for mostly all engines. Engine to body, battery to body and engine. Alternator to engine. A lot of time there will be more than one for the things I just listed. I am Assuming the OP checked all fuses and wiring under the fuse box next to the battery. I have seen the wires come out under the box, look fine, but stop a Jeep dead.
Complete rebuild axle/engine/everything swap in progress
Also I would check the battery cables, man those things really store corrosion and can cause serious starting issues. If you try and turn on the engine and you a distinctive "click" then nothing that is a strong indicator of this issue. Dunno why.
Fuel pump is not working. In the middle of replacing that. Still no spark. I know for sure because it won't start with starter fluid. I have checked every wire I can without a volt meter. I may just have to get one. Changed the CPS, but what about the cam sensor or I also heard about a pick up coil?