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Low power engine and high gas consumption

Tiny
HATAKE
  • MEMBER
  • 2011 HYUNDAI ELANTRA
  • 1.6L
  • FWD
  • MANUAL
  • 31,000 MILES
Low power engine specially in second gear. The rpm drops even when if I am stepping on the gas pedal. High fuel consumption. My previous mileage is 9km/100l but now it is 15km/100l.
Thursday, July 13th, 2017 AT 6:35 AM

9 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,861 POSTS
Hello,

It sounds like you have a mass air flow sensor that is out. These sensors can go out without causing a check engine light.

Here is a guide that will show you what you are in for when changing the sensor out.

https://www.2carpros.com/articles/how-to-replace-a-mass-air-flow-sensor-maf

Please let us know what happens.

Cheers, Ken
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Thursday, July 13th, 2017 AT 5:51 PM
Tiny
HATAKE
  • MEMBER
  • 5 POSTS
I was scheduled tomorrow for service in hyundai. I want to know what are the other problems so that I can explain or I have an idea in every parts that they want me to replace. Becease I went to hyundai 2 weeks age to report that I have a low power engine and high fuel consumption after they tune up, change my oil and replace my air filter and engine wash, but they told me to replace my sparkplug. But the problem is still there.
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Friday, July 14th, 2017 AT 8:36 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,861 POSTS
Tell them the car is getting poor mileage they may have a software update for the car that will fix the problem.

Please let us know what you find.

Cheers, Ken
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Friday, July 14th, 2017 AT 9:43 AM
Tiny
HATAKE
  • MEMBER
  • 5 POSTS
They checked tbe computer of my car and its all good. The problem thay they told me is the clutch. It is slipping.
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Saturday, July 15th, 2017 AT 1:00 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,861 POSTS
Yep that will do it.

Here is a guide that will show you what you are in for when doing the job.

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

And here are some diagrams of what it will be like on your car.

Please let us know what happens.

Cheers, Ken
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Monday, July 17th, 2017 AT 9:27 AM
Tiny
HATAKE
  • MEMBER
  • 5 POSTS
Doyou think the clutch is the real problem here? Is it gonna cause the engine to be low powered in my 2nd my second gear and increase the gas consumption?
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Monday, July 17th, 2017 AT 11:10 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,861 POSTS
Yes if the clutch is slipping it will cause low mileage. You should be able to tell if it is slipping can you?
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Tuesday, July 18th, 2017 AT 9:31 AM
Tiny
HATAKE
  • MEMBER
  • 5 POSTS
I dont know how. But I feel the engine is on low power and high mileage. I talked to two different mechanic: 1. The casa hyundai mechanic and 2. The shell philippines. They both told me that it was the clutch.
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Wednesday, July 19th, 2017 AT 6:56 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 42,861 POSTS
Okay, let us know how it goes :)
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Wednesday, July 19th, 2017 AT 11:07 AM

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