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1999 Ford Mustang

Tiny
RWM21
  • MEMBER
  • 1999 FORD MUSTANG
Engine Performance problem
1999 Ford Mustang 6 cyl Two Wheel Drive Manual 175K miles

Hello sir my name is Robert. I actually have two questions.

1. What is causing a back air pressure after it passes the EGR valve?

2. Why is my car cutting off while I'm driving in neutral?

Thank you for your time and answers, sir.

Robert McDaniel, Jr.
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Sunday, October 11th, 2009 AT 8:26 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,758 POSTS
Robert, I'm not sure I understand the questions. Why are you driving in neutral? What do you mean by back air pressure after passing the EGR? Vacuum draws unburned fuel into the intake through the EGR.
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Friday, October 23rd, 2009 AT 7:58 AM

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