ON COLD MORNING STARTS THE ENGINE HAS BEGUN ...

  • Tiny
  • Anonymous
  • 2003 FORD EXPLORER
  • 160,000 MILES

On cold morning starts the engine has begun "lurching", an audible, cyclical revving up and down noise that rocks the whole truck- as if I were quickly pulsing the accelerator. Stops as soon as I get above 5 mph. Seems to run fine otherwise. What could this be and does it warrant a visit to my mechanic?

Sunday, December 16th, 2012 AT 1:42 PM

1 Reply

  • Tiny
  • ASEMaster6371
  • EXPERT
  • 25,554 POSTS

Is the check engine light on?

Could be a vacuum leak or a bad idle control valve.

It will warrant a visit to track down the exact failure

Roy

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Sunday, December 16th, 2012 AT 2:31 PM

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