SPONSORED LINKS

Engine revving up and down

Tiny
CHESHIRECAT18
  • MEMBER
  • 2016 HYUNDAI SANTA FE
  • 2.3L
  • 4WD
  • MANUAL
  • 18,000 MILES
The engine idle is fine when starting but when engine is warm it revs up and down when at t/lights or standstill. It stops this when it reaches normal idle revs.

any ideas?

thanks
Tuesday, February 2nd, 2021 AT 3:20 AM

1 Reply

Tiny
SEVAG P
  • MECHANIC
  • 405 POSTS
Hello,

It sounds like throttle valve defected or just needs cleaning, for more diagnosis read fault codes and send to us.

check our link below how to read fault codes.
https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Check our link below how to check erratic idle and how to clean throttle valve.

https://www.2carpros.com/articles/engine-idles-too-high

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

Let us know what happens with you.

thank you.
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Tuesday, February 2nd, 2021 AT 5:30 AM

Please login or register to post a reply.

Related Engine Revs Up Content

Idle Air Control Motor Replacement
GUIDE
Idle Air Control Motor Replacement
The idle air control motor or idle speed control motor is designed to adjust the air flow into the intake manifold at engine idle. Engine idle speed is monitored by the PCM...
VIEW MORE

Sponsored links