i have a 1999 dodge ram 1500 4x4 5.2L auto with 132,000 miles. I will be driving down the road and all of a sudden with no warnning it just dies no spudder shaking or loss of power just dies. at first it would start right back up but now i have to sit for 5 or 10 mins before it will start back up. i have a new fuel pump coil plugs and wires there are no check engine lights on ooo and it only does it when its hot in the afternoon it runs fine in the morning and at night. im stumped and need help!!!!!!!!

 

Welcome to DF.

Could be a number of things. I'd grab a multimeter, a Haynes manual, and follow the procedures for testing the TPS. If that checks out fine, I'd grab a pre-catalytic converter ("upstream") O2 sensor.

 

I have a 99 dodge ram 1500 2wd with the 318 and have the EXACT same problem. Mine started dying in 2008. I replaced a lot of parts (you can look my posts up on this forum) and finally bought a remanufactured ECM (lifetime warranty $400). That solved the problem through the summer of 2009 but it started dying again this summer (2010). I got a replacement ECM from the supplier and the dying continued. I decided to abandon the first supplier and bought another ECM (lifetime) from EBAY ($200). I put it in on Sunday, Monday it didn't die, Tuesday it did. Either the last two computers I got are bad or something else is now causing the problem. I've now spent $1200 on this problem in the last two years.

 

Need to find out what you are losing when the truck dies. Fuel? Spark? Both? Having a scanner that can show various sensor data would be an excellent tool for troubleshooting here. If you don't have a shop that is willing to help you troubleshoot, a laptop, communications cable, and free software would enable you to graph sensor outputs so that when the problem crops up, you can get a very good idea of just what is happening. (and in some cases, point at it, and say: "Got YA.")

Comm cables run 35 to 50 bucks. Software can be purchased for around 150, but, with the wealth of shareware out there on the net, I don't see the point of paying someone for it. Any laptop that runs windows will work. If you don't have one, just get a cheapy off of EBay, or some such.

Having a scan tool that will read codes, and show data in REAL TIME is one of THE BEST tools you can own.