cruise fails when a/c is turned on

Printed From: the12volt.com
Forum Name: Cruise Controls
Forum Discription: Cruise Control Settings, Tach Signal, VSS PPM(Vehicle Speed Signal Pulses Per Mile), Vacuum, Brake, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=61488
Printed Date: May 10, 2025 at 6:35 PM

Topic: cruise fails when a/c is turned on

Posted By: D-lux-customs
Subject: cruise fails when a/c is turned on
Date Posted: August 16, 2005 at 11:06 PM

I have installed a audiovox vacuum cruise on a 98 dodge caravan. This van had cruise already but it wasnt working so the owner thought this route would be cheaper. My problem is that when the air conditioner compressor cycles the cruise drops speed usually about 7mph. If you hit resume or accel it will return to the speed it was at before the a/c cycled. I made sure there were no vacuum leaks and that it has a vacuum canister. I also checked all the wiring. i dont know what else to do. someone please help me

Replies:

Posted By: mo12v
Date Posted: August 24, 2005 at 4:52 PM

Probably should have went with a Full Electronic Cruise like Rostra 250-1223......
Be sure the cable has no more than 1/8 slack
Try a different Vacuum source
Adjust Gain Control ( if there is one )

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MO

Don't Learn from Others Mistakes
You Might Be the One That Knows.

Posted By: D-lux-customs
Date Posted: September 09, 2005 at 4:38 PM

Thanks for the post I will check it out and see if that helps.

Douglass