car can't speed up

2011 TOYOTA CAMRY HYBRID
440,000 MILES • 2.4L • 4 CYL • 2WD • AUTOMATIC
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CHANGTE
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  • 32 POSTS
this car accelerate till 40 km, can't up more. must release accelerate then will slowly speed up till 60 km, the same thing again. if accelerate harder, getting worse.no fault code come out.
1.flush out the transmission twice, the fluid is clean now.no metal in it. but still the same.
2.replaced fuel pump and relay, no improve.
3.loose muffler and test drive, still the same.
Aug 24, 2016 at 11:28 PM
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SATURNTECH9
  • ✓Experienced Mechanic
  • 30,869 POSTS
Have you had the exhaust tested for excessive back pressure yet?
Aug 25, 2016 at 5:28 AM
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CHANGTE
  • MEMBER
  • 32 POSTS
because I have loosed the muffler and test. should no pressure built.

I feel it just like cubby no secondary accelerate. but no fault code come out.
Aug 25, 2016 at 11:27 AM
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SATURNTECH9
  • ✓Experienced Mechanic
  • 30,869 POSTS
So you just loosened the muffler?where at?Also loosening wouldn't be enough.
Aug 25, 2016 at 2:01 PM
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CHANGTE
  • MEMBER
  • 32 POSTS
under the car, and took off the bracket. car was running noisy.
Aug 25, 2016 at 5:54 PM
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SATURNTECH9
  • ✓Experienced Mechanic
  • 30,869 POSTS
So did you loosen the exhaust before the cat or after the cat?
Aug 26, 2016 at 12:09 AM
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