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Anonymous Posted on Feb 20, 2018

Sudden speed increase from 1000 to around 2300 R.P.M.s

Thank you so much for your solution, it fit like a glove however I forgot to mention one more thing, it is happening more and more often... whenever the engine is running the speed suddenly increases from 1000 rpms to around 2300 rpms while driving and also while the car is parked...Why?

1 Answer

Justin H. Reed

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  • Expert 317 Answers
  • Posted on Mar 22, 2018
Justin H. Reed
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Hi. Thanks for your question. The centrifugal forces on the rotor increase dramatically as the rpm goes up. In most cases a manufacturer will use a smaller diameter rotor in a 2 pole (3600 rpm) rated motor than they do in their 1800 rpm (and lower rpm). If the larger rotor is now spun at twice the rpm because of a winding redesign, the rotor is suddenly required to handle 4 times the centrifugal force it was designed to experience (force is increased by the square of the increase in speed). If still you looking for more clarification you can visit https://www.reliable-store.com and download the entire workshop manual. It has all the information along with the diagrams for better understanding. Good day!

5 Related Answers

Bill Hackett

  • 383 Answers
  • Posted on Apr 06, 2009

SOURCE: Car droning noise

While you are driving, get up to roughly 40 MPH on a road with little or no traffic. Once at this speed, whip the steering wheel left and right as if you were making rapid lane changes. If you notice a change in the pitch or intensity of the sound, it is quite likely that you have a pending wheel bearing failure. The reason that the change will be noticed is because there is a rapid change in load placed on the bearings during lateral moves. Outside of the, the tires alone, can be quite noisy. I drive an old 1981 Mercedes 300TD wagon. I never realized how much road noise was coming from my tires until I replaced them with new ones!

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Anonymous

  • 15 Answers
  • Posted on Apr 08, 2009

SOURCE: Transmission seems to slipping....

Dear vdizon it seems your bearings are slipping inside your transmission.
This is usually caused by inproper use or stress to the transmission. Changing gears at high revs and double clutching may have caused the bearings to wear, or a service on the gearbox has not been performed by factory recomendation. I advise you to book your car into your mechanic to confirm the problem before the proble escalades.
I hope this has helped you.

Anonymous

  • 65 Answers
  • Posted on Feb 28, 2010

SOURCE: light to medium buzzing noise from front of car.

IF ITS MORE A WHIRRING NOISE IT COULD BE A WHEEL BEARING

Jason Johnson

  • 1619 Answers
  • Posted on May 18, 2010

SOURCE: When I'm driving my kia sedona 2.9 automatic is

The throttle position sensor on the intake area and the kickdown switch are both suspect in this. If your pushing hard enough to shift down it could be that sensor is faulty, If not the change in position is to fast for the faulting position sensor. Those are the cheapest things to replace, The other maybe the transmission modulator that tells the unit to shift down.

Anonymous

  • 403 Answers
  • Posted on Jun 04, 2010

SOURCE: 2001 Kia Rio clutch given out?

your clutch wheel is completely burnt out do not try to drive your car anymore if you do you will damage the fly wheel. if you have the experience you can order a clutch kit that comes with clutch wheel pressure plate and throwout bearing and install it yourself. if not then it is a very difficult job and you will need to have it worked on in an auto shop. for info and repairs for your car go to autozone.com sign up its free then click on repair manuals you will find all of your info there....good luck

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