So my 97 ram starts and runs fine, it drives fine but when I let off the gas the rpms drop and it about dies (sometimes it actually does) I've replaced the IAC and the TPS I've replaced distributor cap ,rotor ,plugs, wires, fuel pump, when I replaced the tps it did great for about a week and started again when I did the IAC it lasted about 2 days I'm at a loss at what to even check for next

 

Did you clean the throttle body? If you replaced the IAC, what brand did you get? If it's aftermarket, that's going to be at least part of the problem..... these trucks just don't like aftermarket electronics. TPS may be fine, but, IAC? That really needs to be genuine Mopar.

 

Ok had to give it some time, I cleaned it to brand new looking and it's been great but I have noticed it still does it but usually just once and then normal again probably every other time I drive it ,