Why does an engine surge and then slow sporadically and then stall on a 1971 Ford Taurus?

What does a bad IAC cause?

the engine to stall and surge at idle

What is the cause of stall and surge in compressor?

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.

Where is the egr valve located on a 1999 Chevy suburban and what are the typical symptoms of an egr valve failure?

EGR VALVE IS LOCATED NEXT TO THE TOP RADIATOR HOSE AT THE ENGINE, IT CAN CAUSE ENGINE TO MISS, STALL AND SURGE.

What is difference between 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.

What makes a 2005 Ford Taurus surge at driving speed and stall at idle I have add both new o2 sensors and it is still doing the same thing?

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.

Why does your 2002 Taurus surge when you put defroster on?

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.

How do you fix the engine surge in your v6 1984 Ford Ranger 4x4?

Check your vacuum lines this usually the cause for a surge in engine speed when idling or running.

What is the less likely cause of an engine to hunt and surge at top no load speeds?

The price of pineapples in Hawaii is less likely to cause an engine to hunt or surge.

Will a bad fuel pump cause engine surge on a lawn mower?

You probably have a dirty carburetor causing that surge.

What causes engine surge in 2004 Kia Sedona?

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.

Can spark plugs cause a little surge in the engine?

my sparkplugs are gaped to wide can that cause my car to surge and poor starting

What is a compressor stall and surge in a jet engine?

A compressor stall occurs when there is a disruption to the flow of air in the engine compressor. A jet engine is driven by pulling large volumes of air into the inlet. Some of this air is bypassed around the engine core, and some enters the core. Air that enters the core is compressed considerably in stages (compressed more and more as air travels toward the back) before it is mixed with fuel, ignites, and expands out the rear of the engine. A compressor stall occurs when the pressure of air entering the engine drops below the pressure in the compressor or air within the compressor drops momentarily as a result of stalling air (disruption in air pressure). When this happens the compressed air expands and travels toward the area of less pressure (toward the front and out the back). This happens quite fast and can be explosive. In fact, many people who are lucky enough to be on a plane when a compressor stall occurs may first believe a bomb went off. When a compressor stalls momentarily (often goes unnoticed by pilots or passengers) this is known as a compressor stall. An engine surge occurs when the compressor completely looses compression and the explosive effect is herd. Compressor stalls and surges where more prominent in older jet engines. Fortunately, compressor stalls or surges are extremely rare, and don't cause harm to the engine or plane. A compressor stall often will correct itself as soon as the flow of air in the engine is restored. Often times the corrective action by the pilots is to reduce engine power till the engine stabilizes. Today, with the use of Computer Aided Design (CAD), improved engine design and understanding this problem has virtually vanished.