Will an ignition coil fail at a higher rpm under load but not at idle?

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What does an ignition coil do?

Autoshop online Here is a synopsis of this link. Coil The coil is a compact, electrical transformer that boosts the battery's 12 volts to as high as 20,000 volts. The incoming 12 volts of electricity pass through a primary winding of about 200 turns of copper wire that raises the power to about 250 volts. Inside the distributor, this low-voltage circuit is continuously broken by the opening and closing of the points, each interruption causing a breakdown in the coil's electromagnetic field. Each time the field collapses, a surge of electricity passes to a secondary winding made up of more than a mile of hair-like wire twisted into 25,000 turns. At this point, the current is boosted to the high voltage needed for ignition and is then relayed to the rotor. Answer Some HEI distributers are known to create as much as 60,000 volts. Hard to imagine. I once had a 75 impala that put that much voltage out. And that was when HEI's were just getting started. But most of them put out about 30 to 40,000 volts. Ignition coils are very rugged and reliable, but can fail for a variety of reasons. Heat and vibration can damage the coil's windings and insulation causing shorts or opens in the primary or secondary windings. But the number one killer of ignition coils is voltage overload caused by bad spark plugs or plug wires. ======= The ignition coil is basically a transformer. It converts a low voltage into a high voltage to create a spark at the spark plug. The way it works may seem backwards, but basically, a low voltage (about 12 volt) electrical current is sent through a coil of wire (the "primary" winding), which causes an electromagnetic field to build up. When this low-voltage electrical is inturrupted (by the points in a conventional distributor, or by the engine's computer), it causes this electromagnetic field to collapse suddenly. As it collapses, it cuts across the windings of a "secondary winding" which is wound around the primary winding. Since the secondary has many more turns of wire than the primary, the magnetic field causes a much higher voltage (anywhere from 5,00 to 20,000 volts) to flow in it. This is the voltage that is sent out through the ignition leads to the spark plugs. Why do they have it trigger the high voltage when the current is shut off rather than when it's turned on? Because, back when they first started making ignition systems for engines, they used mechanical "points" to switch the voltage on and off. When the points "made" to allow the current to flow, they had a tendency to bounce, causing the voltage to build up erratically. When they were opened, though, the current was shut off very rapidly, giving the sudden change in current flow necessary to create the higher voltage to be induced. Nowadays, with electronic ignition systems, it could be done either way, but they usually stick with the "old" way just because it's what they're used to.

Where is the Ignition coil?

Answer . \nDEPENDS ON THE YEAR AND MOTOR,DO YOU HAVE SPARK PLUG WIRES?IF NOT,THEN YOU HAVE A SEPERATE COIL FOR EACH SPARK PLUG THAT SITS ON THE TOPS OF THE PLUGS,IF YOU DO HAVE SPARK PLUG WIRES THEN JUST FOLLOW IT FROM THE SPARK PLUG TO THE COIL!HOPE THAT HELPS

How do you test the ignition coil in a car?

You can test the ignition coil on a car by using a multimeter. Abad ignition coil can be the cause of a car not starting.

Why would a 1993 Pontiac Sunbird 31 lose oil pressure when idling at proper running temp and then it returns at higher RPMs?

Answer . \nwell, oil pumps are power by the engine, when the engine is at idle its at its lowest rpm when you step on the gas the rpms get higher therefore your oil pump works faster delivering oil at a faster rate to keep up. oil pumps got a valve call the pressure relief valve and that valve maintains proper oil pressure at all times. if the valve fails you may experience those kinds of problems. it could also be that the rotors or gears on your pump are worn out beyon manufactures specs. and they not providing proper pressure.\n. \nanother answer to your problem would be low oil level and or faulty sensor.

What is the ignition coil for?

The coil The igition coil provides high voltage to the spark plug, to provide the spark to ignite the fuel in the combustion process inside the engine. Likely, you know that most cars only have 12 volts that run all the functions in a car. But 12 volts is not enough to provide a spark across the electrode of a spark plug, so more voltage is needed to jump the gap of the spark plug electrode. The coil provides this by magnetic induction inside the coil. It converts 12 volts to tens of thousands of volts, which is what is needed by the spark plug. If you are shocked by a car's ignition coil output voltage, you will definitely feel it! But you will not be permentately harmed or killed, because this voltage is at a very low amperage. ======= The ignition coil is basically a transformer. It converts a low voltage into a high voltage to create a spark at the spark plug. The way it works may seem backwards, but basically, a low voltage (about 12 volt) electrical current is sent through a coil of wire (the "primary" winding), which causes an electromagnetic field to build up. When this low-voltage electrical is inturrupted (by the points in a conventional distributor, or by the engine's computer), it causes this electromagnetic field to collapse suddenly. As it collapses, it cuts across the windings of a "secondary winding" which is wound around the primary winding. Since the secondary has many more turns of wire than the primary, the magnetic field causes a much higher voltage (anywhere from 5,00 to 20,000 volts) to flow in it. This is the voltage that is sent out through the ignition leads to the spark plugs. Why do they have it trigger the high voltage when the current is shut off rather than when it's turned on? Because, back when they first started making ignition systems for engines, they used mechanical "points" to switch the voltage on and off. When the points "made" to allow the current to flow, they had a tendency to bounce, causing the voltage to build up erratically. When they were opened, though, the current was shut off very rapidly, giving the sudden change in current flow necessary to create the higher voltage to be induced. Nowadays, with electronic ignition systems, it could be done either way, but they usually stick with the "old" way just because it's what they're used to.

What would cause the ignition coils to repeatedly fail in a 1996 Pontiac Gr Am 2.4?

Answer . \nReplacement coils must always be the same basic type as the original and have the same primary resistance as the original. Using the wrong coil may damage other ignition components or cause the new coil to fail. \n. \nYour engine is experiencing repeated coil failures, and it may be that the coil may be working too hard. The underlying cause is usually high secondary resistance (bad spark plug wire or spark plugs), or in some cases, a lean fuel condition (dirty injectors, vacuum leak or leaky EGR valve). \n. \nFuture coil problems can often be avoided by cleaning the connectors and terminals when the new coil is installed. Corrosion can cause intermittent operation and loss of continuity, which may contribute to component failure. Applying dielectric grease to these connections can help prevent corrosion and assure a good connection.\n. \nThe spark plug wires also should be replaced following a coil failure to assure a good hot spark. New plugs also should be installed if the original plugs are fouled or are at or near their service limit (45,000 miles for conventional plugs, 100,000 miles for long-life plugs). Hope this helps you.

87 323 sw stalls at idle and hesitates during acceleration and in gear idle is irratic at stoplight.In park or neutral engine runs rough in lower rpm but fine in higher rpm. Fuel filter or pump or MAF?

\n. \n Answer \n. \nIf you have never changed your Oxygen sensor, this is most likely the cause of the problem; the symptoms you describe are attributbale to a failing or dead Oxygen sensor. I assume the car has recently been tuned (including a new fuel filter) and the problem persists.\n. \nCheers\nMalcolm\n. \nHi Malcolm. Thanks for the tip. I changed the oxygen sensor and it has improved somewhat, but did not quite fixed the problem. It appears that idling is irratic when I'm at a stop light. So far, though, after the oxygen sensor change, engine hasn't stalled. It appears that this problem is pronounced when the engine has warmed up. I purchased a fuel filter and will replace it, but am not confident that it will fix the problem. Any other thoughts are welcome. Thanks. \nHarukim\n. \nIt turns out that the ignition wire was bad. I replaced the ignition wire and my car is running fine now. It appears that it's been running on 3 cylinders(no 4th). Thanks everyone.

Why would the ignition coil module keep failing on a 1992 MAZDA 626?

Answer . \nI have had them fail due to heat. I used a certain dilectric grease on the underside to help dissipate the heat. If not heat, then possibly a poor ground.

Where are ignition coils on an Expedition?

the coils are directly on top of each spark plug. they are round and have an electrical plug coming out of the side.

Why does your 1991 Chevy Caviler shake and die when put under a load at low idle?

Answer . Not running on all cylinders?. Check spark plugs and wires, perhaps do a compression check

Ignition coil on 5.4L Triton?

The 5.4 liter Triton Engine has a coil for each cylinder, located over the spark plug of each cylinder. fords truck firing order on the passanger side 1 2 3 4 on the driver 5 6 7 8 kinda stupid The above is how the cylinders are numbered in the engine; front to back on the passenger side bank (1 2 3 4) and front to back on the driver side bank (5 6 7 8). The actual firing order is 1-3-7-2-6-5-4-8.

Why is my engine knocking when under load towing accelerating ect but not when idling of decelotating?

Bad bearings? Loose wrist pin? Only happens under extreme engine load? . Predetonation Running hot? Timing too far advanced? Fuel octane rating too low?

Problem with idling higher than normal Since you couldn't find the real problem you adjusted the rpm speed cable under the hood Just a touch It works great Did you do the right thing?

Answer . Its not likely that the cable stretched so you still need to find out why the idle is higher than normal. look for intake/ vacuum leaks, tps dirty, or dirty throttle plate.

How do you decrease the idle from 2000 RPMs?

Idle of 2000 rpms might be some kind of problem. Do you have any warning light on the dashboard? have the car been scaned? 1) Well, when the ignition module (Engine Control Module), detects a malfunction, due to some loss of signal, or sensor related problem, injectors, etc., there is a safe-function to have the engine working beyond optimal control; that is, minimum or default conditions for operation. In other words, engine idle-up = engine control failure. 2) When the A/C system button is ON, and the Compressor is working due to interior room temperature conditions, along with both fan coolers (radiatior and condenser), the ISCV (Idle system control valve or stepper motor) it is also commanded by the ECM to increase the rpm up to near 950. However that is not your case. 3) Other systems, like steering wheel operation, electrical consuming, like lights and so on, have the ECM to increase idle rpm. 4) Some important function that has the engine rpm decrease is the temperature control, done by the ECM. The temperature sensor, a unit gauge located in the thermostat housing, informs the ECM about the engine temperature. Once it warms up, after cold starting, ECM commands the Idle control Stepper Motor to decrease rpm to normal value, which is around 700 +/- 50, if no service is ON, and around 950 if A/C is on. If this sensor fails to inform such changes in temperature, then ECM might never commad the rpm decreasing. 5) the Idle control stepper Motor itself, which is responsible for proper idle rpm, may be the problem. The proper inspection of such part must be done. It works with 6-wired coils for the stepper motor, using around 6 volts. It is easy to be taken out and been inspected to assure free moving of the acting part as a valve. Check also the tightness of the 6-wired connection. 6) Finally, if everything goes just fine, there are two screws to check, having the stepper motor disconnected: _ there is a screw covered by a rubber cap controlling a mechanical valve to let free air-by-pass for minimum idle rpm, as of no Stepper motor working, which is located top of the throttle body. _ and a factory-adjusted screw that works as a stopping for the throttle mechanism when you release the pedal. It is located botton of the Throttle body; the more it is turned clock-wise, the more will be idle rpm with no acting of the stepper motor. Hope this helps.

Why does 3.0 l idle runs rough the fine at higher rpm?

Check the length of white vacuum line under the hood that look as if it comes out of the A/C package as it is a direct link to the timing modulator. It only takes a hair line crack in a vacuum line to cause chaos in the idle circut, but when the motor speed is above idle a small crack may seal itself up. Vaccum leaks can be trying, but take your time and gently bend the line while going down the length of it and listen for the tell tell hissing while the motor is running, with the tranny in park and the emergency brake on for safety being aware of moving engine parts, belts, fan, etc...

I have a 92 dodge stealth. it burns oil at idle but seems clean at higher rpm. it could be valves or rings but is there any known issues that might be an easier fix?

Mine did that, was told to buy a bottle of Lucas (got it at advanced auto) took about a week but ended up working.. My car was same way-had to put new catalytic converter on it and sensor.Don't use high octane fuel either cause it will just blow out the muffler , it's bad for the car to use high octane.Used lucas DIDN'T WORK.

How do you adjust the bands in a hilden vr v8 transmission it slips every gear when under load or over 3500 rpm?

modern transmissions no loger have bands.they work on valves.if transmission is slipping take to a good transmission specialist and have it repaired or replaced. ps: may be the torgue converter and not the tranny

What is the normal engine idle RPM?

A typical idle speed for a normal car engine is 600 rpm to 1,000rpm. It is higher for buses and motorcycles. RPM stands forrevolutions per minute.

Will bad ignition coil cause oxygen sensor to fail?

Yes, a bad ignition coil / misfire will cause an unburned mixture of gas/air to go into cat converter which will than combust in it and cause damage to either catalitic converter, oxygen sensor(s) or both. J.Dropic

You put a 16g evo 8 turbo in your 92 eagle talon tsi now it sputters and stumbles under load at 3500 rpm?

exhaust leak. gaskets around the manifold. probly has a misfire at idle to i bet?

Why does 350 idles good but cuts out runs rough while driving or under load?

A 350 engine will idle good but cut out and run rough while drivingif there is a vacuum leak. This causes too much air to enter theengine under load.

What causes a ignition coil to blow?

Improperly installing the connections in correct position. Moisture connstant on and around the coil plug cap . if the plug wire cap is worn out and their is sufficient moisture, it will create a short in the electrical spark detonating from the coil, thus causing the coil to basically burn itself out over a period of time. Best to check your plug wires for cracks, tears, and damage when changing the engine oil.

Does electronic ignition utilize an ignition coil?

No, electronic ignition uses a sensor in the engine shaft thatdetermines the pulses. This omits the distributor in exchange forelectrical control.

Idle RPM 350 v8?

With a stock cam 700-750 rpm. With a performance cam it can be up to 1200 rpm.. With a stock cam 700-750 rpm. With a performance cam it can be up to 1200 rpm.

What is the idle RPM for a 1.8L integra?

when u first start the car it will idle high, around 1.5 rpm to 2 rpm. when its warm up it should idle between 700-1000 rpm

My boat backfires through the exhaust at idle and can't get high rpm's under a load?

If its a 4 stroke it sounds like a burnt valve or head gasket, if a 2 stroke a bad pack,coil or keyway can cause this,...

Could evga 8800gt idles at 56C and under load 67C is this normal operation?

I'd have to say yes, as the temps on my my 8800gt (Zotac AMP! edition) are very similar to yours. Idle: 55C and Load: 69 (I was just on BF3 beta on ultra settings, which it isn't supposed to be able to handle from what I've read.)

Why is the steering on your Chevy truck extremely hard at idle and a little easier when rpm is higher Should you replace the pump?

It depends: does your truck have power steering or manual. Keep in mind that while driving a car with speed, power steering or manual, much less movement needs to be made on the wheel to make a bigger turn adjustment. If you have power steering, and it is hard to turn at any rate, check the fluid, belt, and check for leaks. if you cant find whats wrong and you still have a problem turning the wheel, it probably the pump going out. If you have a truck with manual steering, it might be normal.

What does the ignition coil do?

Ignition coils Ignition coils are very rugged and reliable, but can fail for a variety of reasons. Heat and vibration can damage the coil's windings and insulation causing shorts or opens in the primary or secondary windings. But the number one killer of ignition coils is voltage overload caused by bad spark plugs or plug wires. ======= The ignition coil is basically a transformer. It converts a low voltage into a high voltage to create a spark at the spark plug. The way it works may seem backwards, but basically, a low voltage (about 12 volt) electrical current is sent through a coil of wire (the "primary" winding), which causes an electromagnetic field to build up. When this low-voltage electrical is inturrupted (by the points in a conventional distributor, or by the engine's computer), it causes this electromagnetic field to collapse suddenly. As it collapses, it cuts across the windings of a "secondary winding" which is wound around the primary winding. Since the secondary has many more turns of wire than the primary, the magnetic field causes a much higher voltage (anywhere from 5,00 to 20,000 volts) to flow in it. This is the voltage that is sent out through the ignition leads to the spark plugs. Why do they have it trigger the high voltage when the current is shut off rather than when it's turned on? Because, back when they first started making ignition systems for engines, they used mechanical "points" to switch the voltage on and off. When the points "made" to allow the current to flow, they had a tendency to bounce, causing the voltage to build up erratically. When they were opened, though, the current was shut off very rapidly, giving the sudden change in current flow necessary to create the higher voltage to be induced. Nowadays, with electronic ignition systems, it could be done either way, but they usually stick with the "old" way just because it's what they're used to.

What is wrong with My 94 accord that is not running the coil is fine-gets spark replaced the ignition control module car turns over but does not idle?

Check your fuel pump pressure. An easy way is to crank the car over and then loosen the bleeder screw at the end of the fuel rail (assuming it's common-rail fuel injected) and fuel should squirt out. If it doesn't, you have insufficient fuel pressure and should first change your fuel filter, and if that doesn't work replace your fuel pump relay and then finally your fuel pump. If fuel does squirt out, check your throttle body for proper operation.

Why does your 2000 ford expedition shake under load 4.6 liter you put new bosh plugs one was failing new at idle replaced now idles good under load now shakes and misses?

Never put Bosch spark plugs into a US engine. Normally they fail. Use Motorcraft--good experience speaking!

What will cause my2000 Malibu to run rough at idle and low rpm but run great at higher rpm?

You May Have a misfire if Check Engine Light is on Have it Scanned or possibly a dirty Mass Air Sensor

Why does your RPM drop then increase when idle?

More than likely you have a vacuum leak. Check all the hoses, make sure none are torn, britle, and disconnected.

What could make a 2002 Dodge neon run rough at idle and also have bad miss at high RPMs even after replacing plugs wires and coil pack?

intake manifold leak. carefully spray gumout around the engine while its running where the intake manifold is attached. if there is a gasket leak the gumout will be sucked in and will make the idle smooth out for a few seconds. do this test quickly and spray as little as possible preferably on a "cold" engine.. you dont want any flash fires from hosing down a hot engine with solvent.

Why does rpm drop from 900 rpm to 500 rpm when idling?

when a dozer is idling its rpm are at 90,000 to 95,000 Could be dirt in the carb's idle circuit. Maybe a vacuum leak.

When you are driving and put an automatic vehicle in neutral why do the RPMS stay higher than idle?

This is the PCM (Powertrain Control Module) keeping the vehicle prepared for its shift back into gear. If the vehicle detects motion (by VSS signal or ABS Signal) it will keep the engine's RPM's Higher than normal to achive a smooth transition into gear rather than jerking or lurching the vehicle. This prevents damage to the transmission, and typically provides a smoother ride.

Diesel engine loss of rpm under load?

yes because load affect the efficiency of engine , it can be improved by increasing the supply of oil in governer.

Why does my El falcon missfire at low rpm under load?

Check the ignition leads. 9/10 times one or more of them has started to break down.

How can you check an ignition coil?

Very Carefully! Modern electronic ignition systems can operate at 100,000 volts so will bite you hard if you become part of the circuit. You can also damage or spike any electronic management system or control boxes on the car. To check the coil you will need some kind of meter or measuring device. These tend to be part of an engine diagnostics pack so coupled with the above warnings I would recommend using some kind of dealer. I am not saying that a competent DIY mechanic cannot do it, but if you need to ask you probably do not currently have the skills and its not one to learn on!! In the old days. with pre electronic management systems, we used to take off an ignition lead put in an old spark plug, use insulated grips to hold it against the block, turn the engine over and look how strong the spark was. You would probably kill yourself and the car doing this now!

When its cold it idles high and has a hesitation at higher rpms. code reader says PO171. Whats wrong?

PO171 means your fuel system is running too lean. In other words you are not getting the correct fuel air ratio to bank 1. It could be a vaccum leak, a faulty 02 sensor or even clogged fuel injectors. I'd start with the vacuum leak first. Get a piece of 3/8 hose and use it like a doctors stethascope to try and find a hissing sound. Good luck

2000 Pontiac grand am idles too slow 2.4l under 600 rpm?

find the cable linked to your gas pedal it should have 1 or 2 nuts on it to adjust your idle

Why the rpm jumps to 1500 rpm when on idling?

check your vacume lines by spraying them down with carburetor cleaner. if the engine revs when you spray you found the leak. also check your air flow meter it could just be dirty.

Is an ignition module the same as a ignition coil?

No. The coil provides the spark and the module tells the coil when to spark.

What is the primary job of the ignition coil?

The primary function of an ignition coil on an internal combustion engine is to furnish the high voltage required to jump the gap on a spark plug in an internal combustion engine, thus providing ignition of the air/fuel mixture in the combustion chamber. It is a special form of transformer used to multiply the low voltage used in most vehicles (6 0r 12 volts) up to a much higher voltage, possibly as much as 50,000 volts or more.

What is the function of the ignition coil in the ignition system?

Ignition coil is a transformer type device that transform the 12 volts battery power to 30,000 up to 60,000 volts. The coil is composed of two winding, the primary and secondary winding.

How many ignition coils does a car have?

It depends upon cylinder in car. 3 ignition coils - 3 cylinder engine. 4 ignition coils- 4 cylinder engine.

Where is the ignition coil is coil A on 2001 expedition?

I'm not a mechanic / technician but I know on the 2001 FordExpedition the engine cylinder locations for the 4.6 and 5.4 are numbered : firewall 4 - 8 3 - 7 2 - 6 1 - 5 front of vehicle So I ASSUME it would be : firewall D - H C - G B - F A - E front

What is mutual induction in ignition coil?

its where your mom works on the corner ! One way mutual induction is used is in your cars ignition system its uses an electromagnet to give the proper spark plug its spark within a car with a distributor ignition system.

Why does ignition coil melt down?

if its a points and condenser system that could cause the coil to melt down by a faulty condensor otherwise the coil was either old or a bad vibration caused it to short out and melt down they sometimes fail slowly other times they just go and that's it i never look for a why i just buy another one not a bad idea to keep one at home as a spare or on long road trips

My Chrysler Pacifica has a brand new altanator and new battery and when its on idle the battery dies but as long as its running on higher rpms it works fine What is wrong with it?

You didn't say what year it is but earlier models also had an external voltage regulator that could fail. I would drive it to an auto parts store and let them test the charging system. They will do this service at no cost.