While driving with AC onfront and back as I.

Tiny
ANONYMOUS
  • 2004 FORD E-SERIES VAN
  • 94,000 MILES

While driving with ac onfront and back as I accelrate ac vents shut down go to dashboard rear heat goes on on floor when I let off gas ac returns to normal any help to fix matter is appreciated john

Thursday, October 18th, 2012 AT 1:00 AM

1 Reply

Tiny
ASEMASTER6371
  • EXPERT
  • 25,533 POSTS

There is a vacuum check valve under the hood that is supposed to keep that from happening. Have it checked to verify it is working

Roy

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Thursday, October 18th, 2012 AT 2:53 AM

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