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Car starts but not revving

Tiny
THOMAS ANGULA
  • MEMBER
  • 2004 KIA PICANTO
  • 1.2L
  • 4 CYL
  • 2WD
  • MANUAL
  • 192,867 MILES
My car starts but not revving. I put it on the diagnostic machine its showing throttle positioning sensor signal low. But when I test the signal for TPS it is just fine. Now the question is, what will be the problem again?
Sunday, October 14th, 2018 AT 5:08 AM

5 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,185 POSTS
This happens when the throttle bore gets dirty. Here is a guide to help you clean it. Please disconnect the battery before you begin.

https://www.2carpros.com/articles/throttle-actuator-service

Please run down this guide and report back.

Cheers, Ken

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Monday, October 15th, 2018 AT 12:47 PM
Tiny
THOMAS ANGULA
  • MEMBER
  • 3 POSTS
Still doing the same. Sometimes it can rev up to 2000 rpm then start dropping by itself.
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Monday, October 22nd, 2018 AT 12:07 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,185 POSTS
Have you driven the car for a while after the cleaning how dirty was it?

This guide can help:

https://www.2carpros.com/articles/engine-idles-too-high
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Tuesday, October 23rd, 2018 AT 9:48 AM
Tiny
THOMAS ANGULA
  • MEMBER
  • 3 POSTS
No. I did not drive the car since its not revving.
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Wednesday, October 24th, 2018 AT 3:58 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,185 POSTS
Lets clear the codes and try to drive it.

https://youtu.be/ahK_eucFi-k

Let me know.
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Wednesday, October 24th, 2018 AT 11:05 AM

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