Hi there,

I recently bought a 1993 Nissan Maxima. The mechanic approved it, I
bought it, the car cleared inspection. Now a week later it is acting
moody.

The car runs fine except when I stop at lights at times the engine
starts racing, as is evident from the RPM needle going up and down.

What could cause this problem? Is it a major problem and how can I fix
it?

Please advise.
Thank you.

Pravin Nair

 

Idle air control, throttle position sensor, vacuum leaks. etc..