93 turns off while driving

[ALocke]

I have a 1993 dodge Ram that recently has started shutting off while driving 75 to 80 MPH. The first time it happened, I waited 3 days and it started back up. Ran for a week, then died at 35 MPH. Left it for 2 days, and it started back up after I drained the water fuel seperator. Installed a new water fuel filter and then it ran well. After about 3 weeks it happened again while driving on the highway. I replaced the fuel filter again and then ran for 3 weeks. Died again at 65 or 70 MPH on the highway. Had no pressure at the pickup pump from the manual lever. Replaced the pickup pump, did oil change ( no water noticed in oil) . Last time it died on highway again at 75 MPH. It did still have pressure at the pickup pump from the manual lever. After 2 days, it didn't start back up. Towed it home and it started and ran but don't really want to drive it anywhere in case it all happens again.

Now need other brains to pick on what it could possibly be. Any help?? Would appreciate any info.

 

[CDegner]

I'm a little confused. It died and you said you waited 3 days. Did you try to start it between then?



A truck just shutting down while driving sounds a lot like the wire/connector is loose on the fuel shut-off solenoid. It comes loose while driving and the motor shuts down. Sometimes it starts back up if it is making good contact, sometimes it dow not.



Just something to check.



Carl

 

[1stgen4evr]

I have had my truck(s) to stop just as you describe. In every case it has been either a malfunction of the on/off solonoid or the electrical connection to the same. I am suspicious that it is the connection and your doing things around the wiring harness is making the connection. If it is factory, the connection is a spade (slide on) that will be in place but not making contact. I have been sucessful with just slightly crushing the slide on part and thereby making a tight fit.



On the three occasions that the solonoid died, it wasn't come and go, it died completely never to run again till replacement of the part. (One put on quite a smoke show as it died, lucky it didn't burn the truck).



James