92 Dodge Dynasty No AC during acceleration


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92 Dodge Dynasty No AC during acceleration

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Guest
Anonymous Poster
rdrake51@yahoo.com

Jul 28, 2008, 5:42 PM

Post #1 of 4 (3094 views)

92 Dodge Dynasty No AC during acceleration	Sign In

I recently purchased a 92 Dodge Dynasty with a 3.3 V6 and during heavier acceleration, the AC cuts out. Sound like a vaccum cut out. Air blows somewhere else but not through the vents. Easing up on the accelerator, the air returns back to normal.

Rick D

Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Jul 29, 2008, 12:39 AM

Post #2 of 4 (3091 views)

Re: 92 Dodge Dynasty No AC during acceleration	Sign In

Many vehicles use engine manifold vacuum to change and hold actuator doors in position and when vacuum isn't available or leaking thru a hose or storage can of sorts they will default to "defrost'' ducts till vacuum is available again which is greater at idle, low speed and load or decellerating.

You should look for vacuum leaks underhood as the likely source of this problem,

T

way2old
Veteran / Moderator
way2old profile image

Jul 29, 2008, 4:25 AM

Post #3 of 4 (3089 views)

Re: 92 Dodge Dynasty No AC during acceleration	Sign In

Somewhere in the syatem will be a check valve. It holds vacuum as Tom described under conditions of low engine vacuum, such as acceleration. Click on this link for a generic picture of one.

Being way2old is why I need help from younger minds

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Anonymous Poster
rdrake51@yahoo.com

Jul 29, 2008, 7:23 PM

Post #4 of 4 (3076 views)

Re: 92 Dodge Dynasty No AC during acceleration	Sign In

Thank you very much for the info. I will be checking all the vacuum lines and connectors this weekend.

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