Over the past few months, my 1999 Dodge Durango with 64,000 miles on it and the 5.9 liter engine inexplainably dies when driving. It has happened about 4 times over the past 6 months. I will be driving along and all of the sudden, the car turns off while moving. I have to pull off the road and sit for a few minutes. After a bit, I start the car back up and it runs fine. This has occured when decelerating exiting the freeway, on a residential street while costing along and while accelerating on the freeway. Anyone heard anything like this before? Any thoughts would help, thanks.

The same thing happened to my truck. It only happened one time and I too was exiting the freeway onto a residential road. I have no idea why it happened.

Finally, someone with a similar problem. I think it has to do with the whole "Oil Sludge" theory that is talked about so often on this site. I tried the synthetic oil approach. Flushed out my oil with some sort of additive (can't remember the name, sorry) but the product said it would clean out sludge. Did that, flushed all that oil out and changed the oil switching to synthetic oil (Mobil 1). So far so good, keeping my fingers crossed. I figure if the synthetic oil will save my engine then I will fork over the extra $20 per oil change.

If it dies only on decelleration it may have an IAC motor problem. Flashing the PCM can take care of it.

Over the past few months, my 1999 Dodge Durango with 64,000 miles on it and the 5.9 liter engine inexplainably dies when driving. It has happened about 4 times over the past 6 months. I will be driving along and all of the sudden, the car turns off while moving. I have to pull off the road and sit for a few minutes. After a bit, I start the car back up and it runs fine. This has occured when decelerating exiting the freeway, on a residential street while costing along and while accelerating on the freeway. Anyone heard anything like this before? Any thoughts would help, thanks.
if youhad not had your battery & charging system checked do that first! the same thing happened to my durango (98) 5.2 it was just a battery

I have the 5.9 liter 1998 durango with 150,000 miles on it and just went through the same problem. It had to finally die permanantly and get towed to figure out the problem. It was the crank shaft sensor that went bad in my case. The symptoms were intermittantly dieing on the highway, but were not limited to inclines, declines, etc. The engine had to be under heavy load, towing a boat, to finally have it die. Aperantly, the crank shaft sensor, when it goes bad, is sensitive to heat, so it only happens under load which gives off higher heat in the engine compartment / transmission. The sensor cose about $150 to have the dealer replace. I have had not had the problem since.

Hope this helps!

If it dies only on decelleration it may have an IAC motor problem. Flashing the PCM can take care of it.

What is IAC & did you actually actually fix stalling on deceleration with flashing the PCM? Where did you do it & how much did it cost?

Sent you a private message, but not sure that it went. Sorry for the double inquiry.

IAC = Idle Air Control Valve.

It is located on the back of the throttle body facing the distributor/firewall and it will have a plug going into it. There are two torx screws holding it in (they can be tough to break loose sometimes).

They cost about $40 at an Autozone or the likes...

PCM flashing is done by the dealership.