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Rough idle, dies if not in motion

Tiny
JPTOOXES
  • MEMBER
  • 2000 FORD E-SERIES VAN
  • 4.2L
  • V6
  • RWD
  • AUTOMATIC
  • 185,000 MILES
Over night my 2000 e150 van went from smooth to wont hardly idle if in gear and dies at stop light unless its put in neutral and gas pedal is fluttered. Please help.
Saturday, March 19th, 2016 AT 4:52 AM

2 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Check for a vacuum leak and clean throttle plate on both sides and iac hole with choke cleaner. If it continues scan for codes and check fuel pressure with a gauge.
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Saturday, March 19th, 2016 AT 4:18 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 48,363 POSTS
Here is a guide that will help you find the vacuum leak

https://www.2carpros.com/articles/how-to-use-an-engine-vacuum-gauge

and a video

https://www.youtube.com/watch?v=xN5pcM-5bso

Also, is black smoke coming from the exhaust pipe?

Please let us know what you find

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Saturday, March 19th, 2016 AT 8:52 PM

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