Stopped up exhaust.Cat converter is bad and blown back into muffler causing stoppage.
the engine to stall and surge at idle
stall and surge is caused when the flow in the compressor loses enthalpy and static energy so that it does not have enough power to approach the end of the axis; thus it remains in the annolus of the compressor and creates a stall cell. these cells gradually join each other and create stall zones which are rotating about the axis and are some times called rotating stall. if this stage does not get stopped, the stall cells will cover the whole annolus and will stop the fluid flow through the stages of the compressor and finally lead to surge. if surge happens, the compressor will be out of order.
EGR VALVE IS LOCATED NEXT TO THE TOP RADIATOR HOSE AT THE ENGINE, IT CAN CAUSE ENGINE TO MISS, STALL AND SURGE.
stall happen due to too much suction feed but less discharge and will prevent by implemented inlet guide vanes, surge happen due to less suction feed at operating speed and will prevent by intalling recycle line or anti surge line.
A stall or surge margin graph shows the operating limits of a compressor or turbine system. It typically plots pressure ratio or flow rate against surge margin, which is the distance to the surge line. This graph helps engineers ensure that the system operates safely within its design limits to avoid unstable operation.
I have the same problem with my 98 Ford Taurus. On very dry days, the problem doesn't occur, but in high humidity the car will stall and not start. I'm looking into, will let you know if I find out anything. In the meantime, are our problems the same? Do you notice an improvement on dry days? Does your car not restart after stalling? Does the tachometer surge while the car is bucking and misfiring? Is you check engine light on all the time, intermittent, always off? Last thing is, I doubt the 02 sensors would affect driveability. You might fail your emissions test (if your state has one) but the car should not stall due to failure of one or more 02 sensors. I'm thinking a vacuum leak might be the cause.
The defrost function uses the A/C system to help draw humidity from the car. The air conditioning system draws its power from the engine. If it overdraws because it is low on refrigerant or other A/C problems it causes the engine to surge to compensate for the required power. Have your A/C serviced or disconnect your A/C from your car.
The least likely cause of an engine hunting and surging at top no-load speeds is a fuel starvation issue. Typically, fuel starvation leads to a lean mixture, which would cause the engine to struggle or stall rather than hunt and surge. More common causes include issues with the governor system, air-fuel mixture adjustments, or ignition timing problems, which can directly affect engine performance at high speeds.
Check your vacuum lines this usually the cause for a surge in engine speed when idling or running.
The price of pineapples in Hawaii is less likely to cause an engine to hunt or surge.
You probably have a dirty carburetor causing that surge.
Engine surge in a 2004 Kia Sedona is often caused by a clogged fuel filter or dirty injectors. When insufficient fuel reaches the engine, it will exhibit these symptoms.