Presea08

I recently had a problem with my car's idling.The RPM will drop to 400-500 and swing back to 800(Normal) when I engage to neutral with the car still moving(50-70KM/H).By right,it should hang around the region of 800-1000.

With the aircon on,the RPM stays at 1500 using the same method mention above.RPM only slowly drop to 950 after ard 15s when the car is stationery.

I suspected the MAF or the THROTTLE BODY going faulty soon.
Anyone had the same problem as me?
Pls help.Thank in advance.

Catman

I am not familiar with the Presea. But, on my Sentra I had problems with idle dropping and not recovering when stopping quickly. Also, rpm's dropped when AC came on, and engine would stumble. My problem was solved by cleaning the Idle Air Control Valve and the trottle body. In some models it is mounted where the throttle body is. Mine was on the opposite side of the intake manifold. You can just clean your throttle body with a toothbrush and Throttle Body Cleaner. That may help. It is the carbon build-up that can cause problems. The idle air control valve adjusts the idle when the load changes. May be a good idea to find where it is on your car and also clean it of carbon. Here is what I did on my car:

http://www.nissanforums.com/showthre...VALVE+pictures

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