My first troubleshooting thread.. Rough vibrating idle issue

[RedGS]

Hey guys. I did alot of searching for this but need some help. Predator bird runs great but when i am sitting at a stop light and its in drive it idles very rough, or vibrates a very harmonic hum. Sometimes its worse than others and sometimes it even does it in park or neutral too. From what i understand it has new plugs,wires, coil packs, and a whole slew of new parts so im a bit confused on what could cause this. It goes away as soon as the tach hits about 950-1000 rpms and is smooth the rest of the time. Ive read theres alot of 3.4 guys that complain of the same issue but I havent had any luck finding a solution. Does anyone have any suggestions? This afternoon Im going to get a quiet muffler put on it to see if that helps some. Anyways, any help is much appreciated. My vette idles so smooth you forget its running but this thing gives you a massage. Thanks guys:tup:

[Kronic Budz]

Re: My first troubleshooting thread.. Rough vibrating idle issue

tranny or engine mount mabey? I dont no how much these things cost or how hard they are to replace.

Check your driveshaft out.

[RedGS]

Re: My first troubleshooting thread.. Rough vibrating idle issue

Well i guess im just too picky. I drove my buddies 95 v6 camaro a while earlier today and it does the exact same thing and he said its done it to him since he bought it new. I thought something was wrong but I guess not. I guess what I am feeling is just characteristic. I appreciate your help guys. I guess im too analytical hehe.

[auto666]

Re: My first troubleshooting thread.. Rough vibrating idle issue

its an injector issue. the middle injector on the passenger side doesnt pulse properly at an idle i think its because of the heat from the egr but im not sure my girls 3.4 my 3.4 and my buddy's 3.4 all have the same issue and it is that injector on all of them. i used a noid light to check, its the only one with an irregular pattern i've posted this before. my buddy tried replacing his entire ignition system to get rid of it, its the injector......