I've been having an occasional problem with a "sputtering" engine on my 2002 Ram 1500 (5.9 liter).

Here's the scenario: ......The motor starts & idles just fine, accelerates from an initial dead stop just fine, but when I let off the gas to coast through a turn (5-15mph), and then accelerate coming out of the turn, it tends to sputter & hesitate. If I pull the truck over while it is still sputtering, then turn off the engine & re-start it, the engine runs fine again. I am not getting any "Check Engine Light" or error codes (DTC's) activated.

Here's what I've tried so far: ......Installed new plugs & wires, cleaned cap & rotor, removed & thoroughly cleaned the entire Throttle Body, installed new Idle Air Control Valve (IAC) & Throttle Position TP Sensor (TPS), verified proper vacuum w/ no leaks detected, verified no leak in the plenum, the fuel pressure is steady at 49psi, the PCV is good, & Oxy Sensors were just replaced. I've disconnected the battery (& drained all residual power) several times in order to reset the PCM.

I was wondering if this is due to a glitch in the Powertrain Control Module (PCM), and if I need to get the computer re-programmed in order to resolve the problem. "AutomotiveComputerExchange.com" can provide a fresh re-programmed PCM for around $260, but I was wondering if this is a necessary step to take.

Any advice-help would be appreciated. Thanks!

(2002 Dodge Ram 1500 ST Sport Quad-Cab 4x4, 5.9 liter, automatic, 79000 miles)

 

Damn, sounds to me like you covered all the bases except a PCM replace or reflash. I woulda bet the TPS would have been the culprit...

 

effin computers...lets go back to carbs and manual transmissions!!!!