Ok all you electrically inclined ford people I need your help I do not know where to go from here.
1998 Ford Ranger XLT Will turn over but will not start. I was on vacation 3 weeks ago left my ranger parked in my driveway while I was gone the factory installed alarm went off I told roomate to use the old door remotes to shut it off. I got home truck would not start jumped it and it started went to store after driving around and it would not start again jumped it again and it started took the battery in was told it had a dead cell replaced battery drove for a few days, the alarm went off again sittingin driveway, would not start again and would not start with jump replaced starter problem fixed for 2 days. On the way home from work truck dies just from taking off from light had to get towed home 30 miles. So far I have now replaced the battery, starter, fuel pump, cam and crankshaft sensors and have checked the reset relay power is getting to the fuel gages but not the fuelpump. This truck has a factory alarm and an after market auto start. The keys that are the originals however look like duplicates since they are the not big ones that have the chip in them. My sister was the original owner of this truck and the keys I have are the originals that she got from the dealer. All of the relays and fuses have been tested that I can think of. Oh yeah the original factory alarm is hooked into the auto start this was done about 4 years ago. The engine is 6 cylinder 3.0 automatic. Can anyone help me besides taking it to the ford dealer which after the 800.00 in parts I now cannot afford? Any idea? Clues? What have I missed.

 

Could be the REMOTE START system. If the key isn't put into the ignition and the ignition stitch turned to the "RUN" position within "X" minutes, the engine will shut off. It is also tied into the factory alarm system. I would disconnect the REMOTE START to see if the problem clears.

 

I would have the alternator checked.