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How does a flywheel work - Cars & Trucks

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A flywheel attaches to the rear of your engines crankshaft. Then comes the clutch plate, then comes the pressure plate, which holds your clutch very tight to the flywheel. When you press down your clutch pedal , this disengages your pressure plate off the clutch also disengaging clutch from flywheel, allowing you to shift gears smoothly. I hope this answers your question. GOOD LUCK FRIEND.

Posted on Nov 17, 2014


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1998 jeep grand cherokee starter. Not engaging to flywheel. Works fine when manually jumped from battery.

Sometimes I take the starter motor off the vehicle. Lay it on the ground, hook up jumper cables properly from battery to starter motor, it should do two things, kick out the drive gear and spin. Do you have a flywheel cover that you can remove and watch the starter drive gear engage the flywheel? Also, check the flywheel teeth.

Sep 25, 2017 | Jeep Cars & Trucks

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I am putting a 1982 350 in a 1994 Z71 will the flywheel work

what do you mean will the flywheel work
a flywheel is just a bit of metal designed to carry the pistons over compression strokes and to give a torque response on sudden loading of the crankshaft
if the flywheel is off the motor originally it will fit
no are you saying will the different clutch kit fit well that is a different matter or if you connecting it to an auto transmission then there is no flywheel as suck, just a flex plate that is connected to the torque converter which then acts as the flywheel

Sep 03, 2017 | Cars & Trucks

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I have a 2000 Volvo s80 and I can not get it to turn over or even fire

Hi,regarding your Volvo s80, have you noticed recently in the past that it almost did not want to start and maybe sometimes it did start?
I am asking to see if you noticed this recently?
If you do not hear your car even click, when you turn the key,
Have you checked your battery,and the battery wires to make sure the battery is good?
Maybe the battery needs to be replaced or a wire is loose and there is no connection with the battery,and wires, please check your battery first.When was your battery last replaced? Check the battery cables to see if there is any
noticeable corrosion that you can see that might be interfering with the contact.(If you see green and or white powder try cleaning off this area with a battery terminal brush)
Remove the terminal wire clamps, most can be loosed and removed from the batteries positive and negative terminals with a flat head screwdriver.
Then clean the area with the battery terminal brush ,if it has the green/white corrosion,you will be able to see if it does.
Be safe and protect your eyes always with safety glasses.

I just went through this with my daughter's car.
The Volvo s80 also has what is called a flywheel. (Very expensive to buy new from the dealer, it will cost a few hundred dollars)
Tip, If it is the flywheel you can shop around for prices depending on your budget and preferences./(New or used)
Yes,you can replace the flywheel even with another used flywheel,just make sure the teeth are not damaged,or worn.
A used flywheel could save you money, which most likely will be needed to pay someone to replace and do the work,if it is the flywheel.

Replacing the flywheel entails taking apart the entire front end,
the entire suspension needs to come out if it is a front wheel drive,
the engine needs to be dropped,
and the transmission needs to be separated.

Second and very important tip make sure if you are replacing the flywheel that the new or used one is an exact match for the one that is in your car.
(It must have the same exact number of teeth.
(I learned this the hard way)
Some flywheels have 133 teeth and some maybe 142, so make sure it is an exact match.
You do not want to have your car taken apart,and put back together again and find out it is not starting after all this work because you bought the wrong flywheel.
If the flywheel in your car has 133 teeth then a flywheel that has 142 teeth will Not match and you don't want that to happen,because your car won't start after all that work and you have to do it all over again which will cost money.
The flywheel is a large almost 12 inches in height and 10 or so inches in width,heavy metal circular shaped piece that has grooves(or teeth that go all around the metal,if any of these teeth are worn down what happens is when you try to start the car it will turnover but the car won't start.
The reason is the flywheel rotates to catch on the grooves and sometimes over years there could be an area were maybe even 2-3 of the grooves(teeth on the flywheel becomes worn.)
If the flywheel has damaged or worn teeth ,it won't be able to turn and catch,and the car won't start.
If you do not have someone to do this type of work,take it to a transmission shop and they replace flywheels

I hope maybe all you need is a new battery.
Keep in mind the flywheel ?

My daughter's car is a Volvo s80 2003.
I'm not sure how many miles are on your vehicle or if you just bought the vehicle,but over time If the teeth are damaged or a few,even 3 teeth in a row are worn down,this can happen and the car won't catch to start.

As I mentioned the cars flywheel turns and the teeth have to catch on the starter and the flywheel rests on the starter enabling the car to start once the teeth catch.

We also replaced the starter which went through a toll from her continuing to try to start the car.
If it is the flywheel it is always good to replace the starter also in th s80.

I hope this information is helpful to you.
If your wondering,we went with a used flywheel and new starter and now the car starts great.


Apr 13, 2017 | 2000 Volvo S80

1 Answer

1990 gmc truck cracked 3 flywheels around the center

I had this issue happen to me 2x with my Subaru. I used a flywheel from another Subaru model that was compatible. The flywheel was built better. Never had a problem since. Do a search for another flywheel that will work with your vehicle. Good luck!

Jun 26, 2016 | GMC Cars & Trucks

1 Answer

Starter works fine but won't crank engine. the pick up has to be given a push first before it starts

If the starter is spinning when you try to start but doesn't spin the engine over then you most likely have teeth missing off the flywheel ring gear. The facts that you say you have to push it and then it starts means the flywheel position changes and the starter has good teeth on the flywheel to engage. To confirm this next time the engine won't crank over remove the starter and look inside at the flywheel for missing flywheel teeth.

Mar 13, 2012 | Ford Cars & Trucks

3 Answers

How do you remove the flywheel

Removing a flywheel can be a aggravating process if you do not know the tricks. The nut which holds the flywheel is on very tightly, and can only be removed by blocking the rotation of the crank shaft with a wrench holding the nut on the blade or by blocking the rotation of the blade. Do not try to hold the flywheel by sticking a crowbar in the teeth, or they might break off. Once you have remove the nut which holds the flywheel in place you will need to gently pry off the flywheel with a crowbar. Keep rotating the flywheel until it can be lifted off easily. Now put the flywheel key somewhere safe. When you want to put the flywheel back on make sure that the key is in the right direction. It is usually marked in some way. :)

Nov 29, 2011 | Cars & Trucks

1 Answer

Replaced starter in '93 F-150 6 cyl auto, new starter works but doesn't engage flywheel. Flywheel teeth aren't damaged, can flywheel be adjusted to bring it forward to mesh with starter bendix?

If the starter bendix is working then they gave you the wrong starter. or if yours has the cylinoid mounted on it , this woud be bad. either way you will need to take it back to the store. flywheels can't be adjusted

Nov 27, 2010 | 1993 Ford F150 SuperCab

2 Answers

New clutch still slipping

Lets start with what was replaced : Clutch pressure plate, throwout bearing,pilot bearing,input shaft bearing, was flywheel cut or replaced,Clutch cable or slave cylinder (whatever is applicable,) Lets see what repair shop says. Depending on what they say they did or didn't do we will take it from there.
keep me posted

Apr 27, 2010 | 1992 Isuzu Rodeo

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Starter doesn't engage with flywheel

the solonoid isnt pulling right under load or the pivot bush has worn so its not coming right out ,hence the pinion is touching the flywheel but hasnt enough power to pull its self into contack

Dec 19, 2009 | 1992 Jeep Wrangler

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