rpm

Jerking and stuttering only at 2000 rpm on a 1999 tj 2.5L Had a reman engine put in and I can't figure out this issue now. The issue was not there on the old motor I am throwing a code for a 02 (PO138).

Hi, I have a 97 Wrangler 2.5 and recently when I stop or slow down suddenly the rpm will fall below idle. It drops to about 500 rpm. I have read that it could have something to do with the exhaust but I don't want to go tearing apart the engine to find nothing. Looking for a quick fix because...