I bought a 1995 Mitsubishi Mirage with a broken flexplate., which made a loud clanging noise when it ran. The lady I bought it off of said it had a motor put in it, and it has broke 2 flexplates since then, and she wasn't putting any more money into the car. I pulled the transmission and it was broke in all 3 corners where it bolts to the torque converter/flywheel. I think that maybe they have been putting it on backwards, or not getting it properly aligned between the crank and the torque converter. My question is...Which direction does it go on? And does it need to go on as to put the crank and the torque converter in relationship with each other? It has the 1.5 liter engine with automatic trans. I don't want to put it back together until I'm sure how it goes on. and I can't find this information anywhere. One side of the flexplate is hooved out in the center where it bolts up to the end of the crankshaft. I don't know if that side should be toward the crank or the torque converter
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If this noise is really loud you will need to replace the flywheel or flexplate (if automatic transmission it is called a flexplate) and the starter, both of the gears that drive the engine rotation during start up are damaged. This damage is likely due to a bent or cracked flexplate if it is a auto transmission or a defective starter engagement drive, this causes the starter motor gear to not fully engage the flywheel gear teeth and causes damage, the damaged death cause the loud noise you here when you start the car. No matter the cause of this there is only one fix, a new flywheel or flexplate and a new starter.
It sounds like the gap between the starter gear and flexplate is growing. The ring gear may be worn out in spots causing the starter not to engage the (shortened) teeth of the flexplate. Or the starter is shimmed too far from the flywheel ( less likely ).
The flexplate problem will require the removal of the transmission to repair.
The flexplate bolts are torque-to-yield which means they are prestreched from the factory. If you take them off you MUST buy new ones. If the new ones don't come with Locktite or simular bolt lock you MUST put it on every bolt right before installaton. If you don't use new bolts one or more will break causing uneven presure on the flexplate causing breakage. Two other causes maybe faulty flexplate (make sure you buy a new one from a good company) or wrong starter; just because it bolts up does not mean it's the right one. I really hope this helps you.
I believe by the way you describe it it does sound like STarter is freewheeling.....Automatics have a flexplate instead of a flywheel....Although it is a solid metal starter ring around a thin metal flexplate....More than likely the starter gear is spinning on the shaft rather than the FLEXPLATE or
FLYWHEEL if you prefer....I Have installed rebuilt starters that were new but didnt work ....
Having almost the same problem you are having...The metal on the starter teeth are very soft compared to the flexplate.....It will ZZZZZZZZ like you stated if the starter gear is torn loose from
a factory screw up....It does happen..I cant say which parts store has Bad parts but these stores are commonly everywhere...(IF YOU KNOW WHAT I MEAN)...NAPA has good parts but you are taking a chance with most that are rebuilt...But not all... In the old days you had to shim starters to or away from the flywheel...IF YOU ARE OLD ENOUGH TO REMEMBER...I would disconnect battery and remove starter.....CHECK FLEXPLATE AND STARTER GEAR TEETH...It could be installed wrong...Some I have seen installed with the starter teeth pointed away from the FLEXPLATE by accident...But if it starts sometimes...It should definitely be the Starter teeth or FLEXPLATE teeth worn in different areas................
...........Hope this helps......................Metalpoet.........LEVEL II CHRYSLER TECH.
G'day mate , misallignment, make sure the bell housing is in good clean servicable condition also when the box is out check that the bell housing to gearbox is flat clean and serviceable by removing the torque converter and unbolting bell housing if it is posible also is the starter straight and in to the correct depth for mesh as if it is to shy or in to far it will put pressure on the flywheel as the torque converter has room to move in and out but the flywheel is under great pressure at that point and will not like being flexed bac to accomadate a deep starter, on the bell housing bolt holes there may be hollow dowels in the bolt holes make sure these are clean, in the right place and actually there,hope this helps
Well depending on the noise, it could be a starter, or it could be whats called the flex plate (assuming yours is like most and its an automatic) There is a sheetmetal plate that bolts to the crank of your engine that then allows the torque converter of your transmission to turn. This Flexplate that connects the turning part of your engine and the main turning part of your transmission also has a ring of teeth on it that the gear of your starter engages into to turn the engine round to get your car started. If its a tinging or clanking sound similar to to the metalic sound of aluminum or light stainless frying pans then it might be a flexplate going bad. If it sounds like a deep clunking noise it might be an engine problem. If the initial sound is more of a grinding kind of noise and then goes away after a few seconds of running the starter may be staying engaged after the engine starts. That would be the starter and maybe an additional problem with the flexplate as well. If its a flexplate sound there should be a cover on the bottom of the transmission directly behind the engine that has just a few bolts . Jack up the car, put it on jack stands or drive it up on some ramps. Unbolt the cover and see what the flexplate looks like. See if the teeth are bad and lightly push it with a screwdriver or something and see if it is loose. If could also be a torque converter going bad but the transmission would normally slip if that was the problem.
Hope this helps you narrow it down...