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Why is car surging RPMs in idle when in drive but full brake applied?

Tiny
JWOOD78
  • MEMBER
  • 2005 FORD TAURUS
  • 100,000 MILES
My mothers 2005 Ford Taurus is surging while in idle at stop signs and red lights and a few times has completely cut off. We have replaced Idle Control Sensor, plugs n wires and air filter with still no success. What else could it be?
Monday, October 15th, 2012 AT 3:40 PM

2 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Scan for codes, check fuel pressure and clean tthottle plate on both sides they get gummy
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Monday, October 15th, 2012 AT 4:37 PM
Tiny
JWOOD78
  • MEMBER
  • 2 POSTS
No codes come back when diagnostic is ran. I replaced idle control valve, plugs and wires and air filter but haven't cleaned throttle plate or checked fuel pressure. Thanks for the info
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Monday, October 15th, 2012 AT 5:33 PM

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