idle problem

[wyn46]

The engine is reving up and down, like someone pumping the accelerator.What is the starting point to solve such a problem?

[sunio]

I had the same problem, u might want to check a solenoid valve called the PRC. It's a electronic vlave that sits on top of the air filter. OR you might want to check to make sure that all your hoses are in correctly and there are no leaks.

[New2Racing]

i have the same damn problem, but screw it, i aint planning to keep the car for long.... GOOD LUCK TO THOSE THAT ARE GONNA KEEP IT!!