386kustoms

iTrader: (2)

83 dt500 with the crossfire. the car runs great, had decent pickup for what it is lol. but when i am sitting at a red light in drive foot on the brake it has a rougher then normal idle and it feels like its missing a little. when you are in neutral of course the rpm is up a hair more and you don't feel the roughness but you can still hear the misfire. its not bad just bad enough to bug me. also when you look at the engine while it is running you can see it definitely looks like it has a miss cause it is shaking a little more then it should be.

now what i have done is brand new plugs and wires. new cap and rotor brand new acdelco fuel pump, i took apart the iac and cleaned them, took off the egr and cleaned it up. checked all vacume lines

this car sat for 5 years before i purchased it.

is there anything that i missed to check on? im planing on using this as my daily driver so im trying my best to make it run as smooth as posible

ex-x-fire

I'd start by checking the for loose throttle shafts, that usually causes high idle though.
Iac valves might not be moving in & out.
There might be a slight leakage at the egr, any internal leak will cause your syptoms.
You might have a upper lid vacuum leak.
Tps bad or out of adjustment. Unbalanced throttle bodys,all of this has been posted alot. Check the posts on the stuff I mentioned.

386kustoms

iTrader: (2)

i did check the alignment from other post on here and they seem strait. i forgot to mention that, also i took the egr off and clean it cause it was stuck, when i depress the spring and hold my finger over the vacume it slowly goes back so im thinking the egr may be going bad im gona check the local u pull it to see if i can pick a good one up cheap just to see if it makes a difference