Stalls and fails to start back up
Just yesterday, I starting have problems with my 91 to the point where it will just stall out and does not want to immediately start back up. It happened while I was driving yesterday and I noticed a bit of hesitation about 10 minutes into my drive. At first I thought I just imaged it as it just lasted 1 second. A minute later it happened again but was more pronounced. I turned around and headed home with hopes of figuring it out. During this time, I noticed my flashers did not want to properly come on and the voltage gauge was hovering at the tip of the red area. Of course, it finally completely stalled a minute or two after I had turned around and did not want to start back up.
While waiting for a tow back home, I tried to start it every 5 minutes or so but not luck. After about a 15 minute tow ride back up, of course it started back up but when I checked the voltage on the battery is was low and it did not appear the alternator was charging it back up. I charged it back up overnight and took off the alternator to have it tested at the auto parts store. I took it to two stores just to make sure, but both of them said the alternator failed the test. At this point, I figured I knew what the problem was and picked up a new alternator and put it in. It started right now and I could see around 14.1 volts when running with no extra electronics on (lights, radio, vent all off). I let it idle for about 15 minutes in the driveway and there were no problems. At this point, I just wanted to max out the electronics to make sure everything was fine. With everything on, the volts were still around 14.1 when running. I wanted to let it run this way for a few minutes to see if there was any drop over time so I went inside for 5 minutes only to find the Jeep had stalled. I got in and started it back up and it stalled again within 5 seconds of starting.
It appeared I did have a bad alternator but that did not seem to be the cause of the random stalls. About 2-3 years ago, I had stuttering problems with itand replaced the fuel pump but this just does not feel the same. Before it would just sputter due to low fuel pressure but never actually completely stall out.
I checked the codes and all I got was the exected: 12 (battery disconnected recently), 33 (I don't have AC), and 55 (end of codes).
Does anyone have suggestions on what to check? I had one friend suggest the distributor but I am not familiar if that matches the symptoms. When I bought the Jeep about 3 years ago, that was one of the things I did not replace. At that time, I did replace the fuel filter, fuel lines, spark plugs, and wires when I was trying to determine my previous stuttering problem.
Any suggestions would be great!