I have a 97 Ram 1500 with a 5.9L in it. A few times a week my engine dies when I let off the gas to approach a stop but it seems to most often occurr when the transmission is only in 1st or 2nd gear. Every other time the engine runs great without any rough idle or miss. I don't know if its an electrical problem or fuel problem. I have changed my cap and rotor recently and the plugs and wires less than a year ago. I have been recently running a Lucas Oil fuel additive with every other gas fill-up. Has anyone encountered a problem similar to mine, before? Please offer advice if you have.

Thanks

 

replace IAC (idle air control) on the back of the throttle body. 2 #25 torx screws and an electrical connector. sort of hard to reach. use care not to drop the little screws or cross thread them. make sure the new one has an o-ring on it, you might have to take the one off your old one. about $40-50 at local parts stores. you can do a seach here in 2nd gen for a lot of previous posts to read about the same problem and additional info. VERY IMPORTANT - in the seach tool, under options, look for the second little drop down selection to 'search terms found in' = set to BODY OR SUBJECT. also sort result by post date.

 

Mine did the same thing when coasting to a stop and it was the IAC. I also changed the MAP sensor at the same time because the CEL came on and threw a code for the MAP.

 

my 2001 ram has been doing the same thing....does a 01 have a ISC? it only happens once or twice in a week...o2 sensor? I only have 43,000 miles on my truck.

 

01 does have IAC, its on the very back of the throttle body. $40-50 at any parts store. its the most likely culprint. Not very likely its O2. search 2nd gen ram for a million posts about it.