Ac Programmer SOLUTIONS!!! - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 01-30-2008, 06:15 PM   #1
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Default Ac Programmer SOLUTIONS!!!

This is Todd. I posted the famous issue with the air flow only coming out of the upper defrost vents earlier this week. I own a 1998 Bonneville SLE, and the air conditioning is now working perfectly--thanks to this loop and my few small repairs/upgrades.

After replacing the 6-port vacuum plug located on the ac programmer with 4 inch length of 7/32" rubber vacuum hoses instead, the air is now flowing through the correct vents when I tell it to. (simple pleasures in life -

That repair procedure was posted earlier on this website and illustrated perfectly! --thanks!

The other thing I recommend doing is-- replacing all vacuum hoses and y-connectors under the hood. The first one and most commonly dry rotted is the one that starts from the vacuum holding canister located under the battery tray and just behind the pass side front bumper. There is the beginning of the vacuum line there that continues up to the firewall where it splits into a y-connector. One end goes to the intake manifold for the main vacuum feed, and the other travels through the firewall and into the ac programmer box (through that 6-hose plug that I eliminated by cutting it out and replacing each junction with a 4-inch length of hose. I matched up the colors and VOILA.. the ac worked again ! The 5 little nipples that the 6-port plug slides onto on the ac programmer had collapsed and didn't let the vacuum pass through to the actuators which control the doors in the duct work.

Thanks again for the help! Glad I found this website.

Todd
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Old 01-30-2008, 06:35 PM   #2
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Glad to hear you got it all fixed up!! (and for only a couple of bucks of small vacuum line, it is a very cheap fix).

If it is of any comfort to you, be glad it happened to you now, and not like it did to me in 110* heat of an Arizona summer.
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Old 01-30-2008, 07:57 PM   #3
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Default ac problem fixed -- yahoo!!!!

Yes, that would be pretty bad for it to break in the summer. I couldn't imagine.

However, it has been in the 70'* here on and off lately. Very strange winter we have had so far! ozone.... ugghhh...

Anyway, thanks again and please let me know if I can be of any help to you in return. I do have a nice stash of extra parts for my car. Maybe there is something you need that I can offer you at a steal of a price? Keep in touch. See ya on the loop..

Todd
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Old 01-31-2008, 07:41 AM   #4
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Default Re: Ac Programmer SOLUTIONS!!!

Quote:
Originally Posted by 6781camaro

After replacing the 6-port vacuum plug located on the ac programmer with 4 inch length of 7/32" rubber vacuum hoses instead, the air is now flowing through the correct vents when I tell it to. (simple pleasures in life -

That repair procedure was posted earlier on this website and illustrated perfectly! --thanks!
I have the same issues, can you post a link to that repair procedure you found on this website?
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Old 01-31-2008, 09:04 AM   #5
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Default Here'* that VERY helpful link to the thread w/ the procedure

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Old 01-31-2008, 09:06 AM   #6
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Default ac vacuum solutions

The photos posted in that thread explain it all. They are about 4-5 message down if you scroll a little bit.

Let me know if you need help.

Todd
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Old 01-31-2008, 09:13 AM   #7
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Default Re: ac vacuum solutions

Quote:
Originally Posted by 6781camaro
The photos posted in that thread explain it all. They are about 4-5 message down if you scroll a little bit.

Let me know if you need help.

Todd
thanks, I'll print that out and take a look at it Saturday.
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Old 01-31-2008, 09:14 AM   #8
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Default Re: ac vacuum solutions

Quote:
Originally Posted by 6781camaro
The photos posted in that thread explain it all. They are about 4-5 message down if you scroll a little bit.

Let me know if you need help.

Todd
Just for clarification: which part controls the direction of air flow and which controls whether it'* hot or cold air?
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Old 01-31-2008, 09:38 AM   #9
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Default controls

The programmer controls which vacuum ports activate which doors. That will tell which vents the air to flow through. (dash, defroster, upper, lower, etc.)

I have the electronic controller in the dash where it is automatic climate control. Not sure if you have that or not, or if you have the manual version with the 3 dials.

Todd
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Old 01-31-2008, 12:54 PM   #10
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The vacuum , vacuum lines, vacumm actuators, and milti-colored line connector all determine where air is delivered inside the car.

The airmix door and airmix actuator are electronically controlled and determine hot and cold or a blend of both. I just began helping a member with heat, but no cold and I suspect it is the airmix actuator http://www.bonnevilleclub.com/forum/...ic.php?t=93014
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