I have a 1997 Ram 1500 with a 5.2 & 46RE transmission. This issue just started happening & I'm not sure yet what the problem is but here's the symptoms. I'll be driving down the freeway with the cruise control set at 70ish MPH and it'll be running fine when all of a sudden the engine will cut out like it's not getting spark. If I feather the gas pedal I can get it to stop and run right again but it's popping thru the throttle body. I'd had a bad coil plug wire so I'd thought that was the problem but I replaced it and I've still got the problem. I'm wondering if it is the crank position sensor starting to go bad? I also just swapped out throttle bodies from stock to a 53mm bored TB and I don't remember it doing this prior to me swapping them out. I don't have the stock TB to put back on it to see if that cures the problem but I don't think it is the issue.
It will do the same thing even when I don't have the CC on. Like when driving in town it will sometimes do this. The other thing I've noticed it that it doesn't seem to do it when the engine is cold.

 

I had a similar issue and it ended up being the crank sensor. The sensor started failing intermittently. One day, the truck died while I was traveling on a country road. Pulled over to the side, hooked up my scanner (which I was carrying at the time to hopefully capture a pending code for the intermittent issue) and finally had a code the pointed to the crank sensor. To get home, I disconnected the battery and reconnected it to clear the code. Luckily, the truck started back up and I made it home. I ordered and replaced the bad Borg-Warner crank sensor with a Mopar crank sensor and haven't had the problem since.

 

Thanks. I "think" I have a spare crank sensor in the garage but if not I'll get one ordered.

 

Just FYI, might want to scan the PCM for any pending or stored codes to see if there are any clues for an other thing that may be causing your issue. I had that similar issue to what you're describing and it took me awhile to narrow it down to the crank sensor after the truck would cut off randomly. Once, it cut off close to my house and I thought it was the alternator. I came back with the jump box and before I could connect it, I tried starting the truck and it started back up like nothing ever happened. Seemed that the crank sensor would fail after it got hot from driving for a bit...

 

I'll pull the codes on it and see if there is anything showing. I don't have a downstream 02 sensor so my check engine light is on all the time. I keep saying I'm going to weld a bung in and install a fooler but never get around to it.

 

Did you do the plenum gasket fix?

 

Ckps or a simple thing like a ign coil. Test fuel psi 49psi for these motors. Hope your doing well, been a long time.

 

No not yet. There was a little oil in the bottom but not as bad as I've seen on other engines.

 

I've got a MSD coil I can put on but I think I need the wire adapter.

I'm going to mess with it today and see what I can figure out.

Yep it's been a while. Good to see you bad around again. Hope thing are going OK up north too.

 

Well that wasn't a lot of FUN but I got the crank position sensor swapped out. Now I'm throwing a code for the upstream O2 senor voltage. When I first started the truck it when from open to closed loop & the upstream O2 was going from lean to rich to center but after the truck had warmed up the upstream O2 was staying in rich and open loop so I'm going to guess that my O2 sensor is bad.