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Idle problems

Tiny
MUSTANGXXX
  • MEMBER
  • 2002 DODGE DAKOTA
  • 980,000 MILES
2002 dodge dakota 4.7 idle is sometimes jumpy it goes up and down slightly at times but not all the time it is just annoying cause it is like when u rev the motor up and down no check engine light on what could this be?
Tuesday, August 14th, 2012 AT 9:26 PM

4 Replies

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Could be a vacuum leak, mass air flow or a bad idle air control motor.

Roy
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Tuesday, August 14th, 2012 AT 10:08 PM
Tiny
MUSTANGXXX
  • MEMBER
  • 27 POSTS
What and where is mass air flow also idle air control motor thank you
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Tuesday, August 14th, 2012 AT 10:13 PM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Idle motor is on the throttle body and the mass air flow is on the big hose going into the throttle body and has 4 wires on it.

Roy
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Tuesday, August 14th, 2012 AT 10:26 PM
Tiny
JOIV
  • MEMBER
  • 1 POST
I think either throttle position sensor or idle control sensor. Both are located on throttle body.I had the same problem. Cost to replace both around 90 bucks at o, relly or autozone, time 10 min. If mass airflow sensor is bad CAR WILL NOT START under no circumstances. Good luck, JOIV
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Saturday, October 6th, 2012 AT 12:10 AM

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