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1996 Kia Sephia Sephia RPM surges when in gear

Tiny
MARS919
  • MEMBER
  • 1996 KIA SEPHIA
  • 4 CYL
  • 2WD
  • MANUAL
  • 99,000 MILES
The rpm will surge when the vehicle is stopped, to almost 2000rpms and goes up and down. In neutral the rpm is much lower and stable. I have changed fuel filter, plugs, and pcv valve. P0170 code for the check engine light. I cleaned the MAP sensor, disconnected battery and so far the check engine light has remained off for a day of driving. I have also added fuel injector cleaner.
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Sunday, February 28th, 2010 AT 5:47 PM

1 Reply

Tiny
DAVE H
  • MECHANIC
  • 13,383 POSTS
Hello .. thanks for the donation .. much appreciated

Start by checking for vacuum line leaks on the engine!!

P0170 Fuel Trim Malfunction (Bank 1)


https://www.2carpros.com/forum/automotive_pictures/266999_AAA2_1027.png

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Sunday, February 28th, 2010 AT 8:48 PM

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