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High RPM, low acceleration

Tiny
JUSTIN NEUMANN
  • MEMBER
  • 2008 MITSUBISHI LANCER
  • 2.0L
  • 4 CYL
  • 2WD
  • MANUAL
  • 101,000 MILES
So recently when I would try to accelerate my rpm's would rise, but the cars acceleration would not match. I thought the clutch may be slipping because it corrects its self eventually. This only happens every so often. What other problems will cause a vehicle to do this? ( Note: there is a stage two clutch in it now that only has about 7000 miles on it.)
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Monday, February 12th, 2018 AT 7:28 PM

9 Replies

Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 POSTS
Really only a clutch fault will produce this type if concern. Is there any smell when it is slipping?
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Tuesday, February 13th, 2018 AT 4:10 AM
Tiny
JUSTIN NEUMANN
  • MEMBER
  • 5 POSTS
No there is no smell.
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Tuesday, February 13th, 2018 AT 9:53 PM
Tiny
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Do a stall test; start engine apply park brake firmly select first gear and try to drive off the car should stall if the clutch slips it will be faulty.
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Tuesday, February 13th, 2018 AT 10:38 PM
Tiny
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Do a stall test, start engine apply park brake firmly select 1st gear and try to drive off the car should stall if the clutch slips it will be faulty
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Tuesday, February 13th, 2018 AT 10:38 PM
Tiny
JUSTIN NEUMANN
  • MEMBER
  • 5 POSTS
The car stalled, this “slipping” problem does not happen often. Maybe once a week or so. I am so confused. Because since I made this post it has been fine. Are you sure no other problems could be the cause of this? Someone told me it could be my thrust bearing. Could that be it?
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Wednesday, February 14th, 2018 AT 4:27 AM
Tiny
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Thrust bearing will not cause this. If the revs are high and you have little or no drive the clutch is slipping, other factors may come into play, a sticky pressure plate or a faulty pressure plate, binding hydraulic system, may be holding pressure on the clutch causing it to slip. The thrust bearing is attached to the clutch fork and when hydraulic pressure is applied to the slave cylinder the fork is pushed and the thrust bearing transfers the pressure to the pressure plate releasing the drive plate.
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Thursday, February 15th, 2018 AT 3:12 AM
Tiny
JUSTIN NEUMANN
  • MEMBER
  • 5 POSTS
This is what I figured I was just going off of what someone had said. Should not have second guessed myself. Well looks like a new clutch is in my future. I should probably change the throw out bearing and stuff too huh?
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Thursday, February 15th, 2018 AT 5:05 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,347 POSTS
Yep change the disc pressure plate and throw out bearing. Here are guides to help you see how the job is done.

https://www.2carpros.com/articles/transmission-replacement-removal-manual

and

https://www.2carpros.com/articles/how-to-replace-a-clutch

and

https://www.2carpros.com/articles/throw-out-bearing-replacement

Let us know what happens and please upload pictures or videos of the problem.

Cheers, Ken
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Saturday, February 17th, 2018 AT 11:53 AM

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