1997 I30 idle problem

[pghobbsx]

When I first start the car in the morning the idle is fine. After some driving when I stop the car at a light the idle will jump up and down from 800 to 400 rpm. It does this every couple seconds while I am stopped at a light or a stop sign. It never dies, but the idle goes down so far the car starts to vibrate a little like it wants to die. Any idea's would be helpful......

[driverdriver]

Could be TPS?

Could be a that something is blocked along a fuel line or malfunctioning?

Try posting in the Maxima section of this forum. The I30 and Maxima are exactly the same car except for some cosmetic differences. I'm sure one of the experts in that section will be able to help you out.