Thread: Idle problem??

I just got my 99 GTP back from the shop where they were installing a new s/c gasket and TB gasket. I took it out for a drive and it seems to me like the motors working harder then it needs to be with higher rpms. Like I stop at a set of light and before it would idle at about 800RPM now it's at 1100/1200RPM and when I put it in neutral it sits at around 1700+RPM. Due to the higher RPM Its using more fuel. Also at idle my Vac gauge sits around 10 when I swore before it was around 20. I'm no mechanic but I can work on a car and try changing things so if theres any a advice on what this issue could be and what I could try doing to fix it would greatly appreciate it.

Sounds like a big vacuum leak. Take it back.

Ya I definetely will be taking it back but there not open till after weekend besides fuel consumption. if its a vac leak can I still drive it abit till end of weekend without any damage occuring?

Being a GTP I wouldn't risk it. The car can only compensate so much, and running a GTP lean = bye bye L67.

Get some carb cleaner and spray ur vac lines if it revs up higher then u found your leak.

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Oh ok, thats a great idea I will give that a try. It just annoys me cause when its cold or first start of the day the idle is fine and sits normal..its just after its been out and heated up that it starts messing around. Also the two cables running to TB are the accelorator and cruise right? I just noticed the shop didnt hook the lower one on.