I have a 95 with a 4.3 runs fine when cold but when it warms up the idle gets real rough like a surge its not constent but it cycles bout every 10 seconds and sometimes stallson a surge. also has a rich smell from the exaust. i did a d cap, rotor, plugs, and wires. im not the most knolageable when it comes to cars. im 17 and need to get it runnin so i can start driving to work. any help is appreciated. i can get a scan tool to check values of any possible sensors. just hopeing for a headstart

I have a 95 with a 4.3 runs fine when cold but when it warms up the idle gets real rough like a surge its not constent but it cycles bout every 10 seconds and sometimes stallson a surge. also has a rich smell from the exaust. i did a d cap, rotor, plugs, and wires. im not the most knolageable when it comes to cars. im 17 and need to get it runnin so i can start driving to work. any help is appreciated. i can get a scan tool to check values of any possible sensors. just hopeing for a headstart



check vacuum lines esp intake manifold connections and any lines cracked chaffed worn threw replace . a rough idle is usually low vacuum.its a start. if you can get vac gauge measure for 20in of vac and as you look for leaks pinch hoses and see if vac changes....

check vacuum lines esp intake manifold connections and any lines cracked chaffed worn threw replace . a rough idle is usually low vacuum.its a start. if you can get vac gauge measure for 20in of vac and as you look for leaks pinch hoses and see if vac changes....
replaced one vac line already and i think i had about 20in but my gauge doesnt go all the way to 0. so ive pretty much ruled out vac leak

im thinking it could me a map or o2 sensor