Stalling on deceleration

[blove78634]

Vehicle: 1992 Jimmy, 4.3l CPI, 4x4 TH700R4 Tranny, NPI 231 Transfer case

Situation: (100+ degree weather) Recently I drove my truck 40+ miles miles, it ran fine until I pulled into a parking lot and then it just stalled (A/C was on). I went to my appointment and came out and it fired right up. I drove it home. While on the way home, I was getting on the off ramp (25+ miles) and it stalled again (A/C was off). I coasted to a stop and the truck fired right up. I drove it again for about 10 miles and it stalled again. Again she fired right up and I made it home. What I am noticing is that it's stalling after I let off of the gas and the engine goes to idle speed. It only did it on this one day. I have driven that distance before and never had a problem. I drive it around town and don't have any problems at all. When it did this it was the firt time.

Parts Replaced: ICM, Coil, Cap, Rotor, IAC

Thoughts: I thought that it may be the electronic lock up converter, and when I crawled under it yesterday I didn't see the plug. So I don't even know if it has one. If it does can someone tell me where the plug might be.

Thanks in advance.

 

[Bryant2121]

i have the same issue in my 97 jimmy not sure what the problem is though but when i let go off the gas and the engine goes into idle speed i usually throw it into neautral and its fine..

 

[blove78634]

Mine is so subtle that by the time it happens, it's already off and i'm coasting!