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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Anytime you replace a sensor or ignition parts on a Mitsubishi, (also have a 95 Mirage) the whole **** thing goes out of whack and won't start. Have to reset the ECC (ECM) supposedly by allowing it to drain of juice (disconnect both battery cables for about a day) See if this works for you
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.