96 Sentra GXE: Low idle .... why?

Question

I have a 96 Sentra GXE with 103k miles on it. It runs great except for a recent problem. It falls to a very low idle at stop signs. . At times, it falls to about 200 rpm and then jumps up to about 400 -

500 rpm. The period between falling to 200 and jumping up to the larger numbers is very brief... about 3 or 4 seconds. I should mention that I recently changed a number of items: fuel filter, air filter, plugs, plug wires, distributor cap and rotor. I am not sure what is happening and would appreciate some suggestions.

Thanks, Al Kondo

NissTech · Accepted Answer

The IAC valve is probably not doing it job at it's full capacity and mayneed to be replaced

Al Kondo · Answer

Niss Tech indicated that my problem may be the IAC valve if it isfull.   What is this and what does it do?   Also where is it locatedin my Sentra.Al Kondo

JimV · Answer

Idle Air Controller. It controls the idle by bypassing a small amount of   air around the throttle plate.Al K

Monte · Answer

Start by cleaning the inside of the intake around the throttle body butterflyvalve.  That may solve your problem before cleaning/replacing the IAC valve.There is also an idle adjust screw on the IACV which you could adjust after thecleaning.

96 Sentra GXE: Low idle .... why?

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