First, the problem. Today, with the glorious 100+ ambient air temp, I got in my Z, turned it on, and the tach claimed I was idling at about 2k rpm. I can hear that it is idling normally, but the tach has decided to bump everything up by just over a grand. When I have the power on but the engine isn't on, the tach is either at about 1000rpm (if the engine hasn't been run yet, since 'cold' doesn't really apply), to if I just shut the engine off, it'll bounce b/w 2750 and 3500rpm. I *think* this is related to heat, since it just started happening. Anyone have any advice on where I can start tracking down the problem on it? (Especially since I'm using the tach as my speedo for highway driving.....)
Now for the question: Considering that this is the START of summer and it's already 100+, I was thinking of ways to run cooler. Does anyone know if there is some kind of ready made spray bar system for the radiator, or do I need to fabricate one myself? (As in spray water infront of the radiator to lower the ambient temp air charge).
Thanks for the help guys.