Mister Bally

With my failed RPM sensor, I had stored faults but no CEL. Car has been perfect ever since so that was definitely my problem.

Mister Bally

One last thing, for about a month before the care did not start and when it took "longer than usual" to start (ie. 2 1/2 seconds vs. the normal 1 second) the tachometer needle would be ever so slightly jumpy. only by a needle width or two but I did notice it and kept it in the back of my mind. This stopped once I replaced the sensor.

Yes I held the pedal steady and it also happened with the cruise control on while on level pavement.

Something to keep in mind.

volvopentaman

I said automatic transmissions have a flexplate, NOT a flywheel.

Flexplate = thin metallic disc (usually around 1kg)

Flywheel = THICK metallic disc (usually around 10kg)

Mister Bally

A picture is worth a thousand words. And it shows that mrknowitall simply does not knowitall. Close to all, but not all.

mishar

You can call it any way you want but that plate and big part of the converter are a flywheel. V8 would work without it (once you start it) but R4 won't. It needs flywheel, no matter how you call it.

mishar

Well sir, I just hope that you won't need any advise from mrknowitall.

s4master1

2nd
automatic= flex plate, drive disk or stater ring gear
manual = flywheel
you want to get technical see how a dual mass flywheel works.

mishar

No. Dual mass flywheel would be a higher course. 101 would be what is a flywheel and why engines have it.

s4master1

can you elaborate on why engines need it?, remember this are not old undustrial/steam engines or farming tractors.

mishar

Yet they need a flywheel for exactly the same reason. On everything less than R6 (may be R5 counting mass of the crankshaft) total torque gets negative in the part of every rotation. No flywheel, or whatever you call it (may be even propeller), and engine would stop running.