ECC reprogram ? - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 10-15-2006, 07:58 PM   #11
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there is no vaccum between the maxi panel and the washer motor only the cruise control. I did find a vaccum hose over by the heater core pipes and I disconnected it and then the doors would not change direction and it was sucking vaccum so I hooked it back up and am back where I started
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Old 10-15-2006, 08:17 PM   #12
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how much of a project getting that out ?
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Old 10-15-2006, 10:20 PM   #13
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Default Re: ok

Quote:
Originally Posted by cvc
there is no vaccum between the maxi panel and the washer motor only the cruise control. I did find a vaccum hose over by the heater core pipes and I disconnected it and then the doors would not change direction and it was sucking vaccum so I hooked it back up and am back where I started
Yes there is. It looks like part of the maxifuse relay center, but it'* actually a vacuum acuumulator tank with 2 or 3 vacuum fittings on the bottom of it. Look again.
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Old 10-15-2006, 10:43 PM   #14
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A quick search yielded me one of the threads that will help you test and determine the cause of the issue.
http://www.bonnevilleclub.com/forum/...ight=ecc+flash

You will need to READ THE ENTIRE post for it to help you. Skipping any part will send you in the wrong direction.

Echo will be around and help you further as he'* the expert. Although the Arizona people get here a little later due to time zone.

You most likely have a bad air mix actuator.
Your vacuum comes from a canister under the front of the front right fender through that hose by the passenger side that you found.
Your temperature control is the air mix actuator and if you search..you will find pictures of some with broken gears internally.
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Old 10-15-2006, 11:15 PM   #15
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I sure do NOT see any hoses other than the one that goes thru the firewall and that one is working fine. There are no hoses under the maxi panel and nothing between the maxipanel and the cruise control. Do you happen to have a pic of it ?? Thanks
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Old 10-16-2006, 12:47 AM   #16
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just read a site that a guy said he changed his air acuator by taking out the glove box drill two holes with a hole saw thru the brace behind the glove box then cutting between them with a hole saw he said it took him 1 hour total to do the job ...anyone know where echo is ?
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Old 10-16-2006, 08:53 AM   #17
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Default Re: humm

Quote:
Originally Posted by cvc
I sure do NOT see any hoses other than the one that goes thru the firewall and that one is working fine. There are no hoses under the maxi panel and nothing between the maxipanel and the cruise control. Do you happen to have a pic of it ?? Thanks
In following the link and reading the entire post, the area they are speaking about is under the passenger hush panel inside the car. This is where the Programmer is located.
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Old 10-16-2006, 11:35 AM   #18
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Default Re: update

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Originally Posted by cvc
ok here is the latest. I took the glove box out and looked in the hole at the rod that opens and closes the mixing door. Here is what I came up with, in the fan high position the door goes to hot no problem, if you try to go down to cold it stops about half way, if you reach in with a screwdriver and give it just alittle push it continues all the way to cold. NOW; if you turn the fan setting to lowest spot and repeat the above all works fine. It is almost like maybe a vaccum problem or something doesn't hve enoug strength to push the door shut against a hi fan speed ? I see no way of getting at the motor that drives the rod at all without a sawzalll or chain sawing the dash out ! Wher is the vaccum line that operates that door ? Or where does it pull vaccum from ? There is no vaccum box next to the brake master cyl. The temp still flashes for awhile and then stops. This ALL started when my starter switch fried and I left the battery disconnected overnight. Never had this issue before. I hate to put alot of cash into a car with 200k plus miles but maybe its something simple ??
Thanks guys and lets hear some feedback !
CVC:
Given the above information, I'd be willing to bet Boosty'* pink slip that you have a failing air mix actuator. When the plastic gear inside the airmix actuator starts to crack, things get real sketchy with the ECC and it becomes rather unpredictable.

There is no vaccuum that goes to that motor, it'* all electric. If it'* stopping in mid-swing, the gear is slipping on the drive shaft. This may sound Greek to you, but if you check out the article on this link, you can see some pictures. You can change this motor without cutting, drilling, or removing the dash - the procedure is in the article. It'* a PITA at times, but can be done.

http://trialsnuts.com/ecc.pdf
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Old 10-16-2006, 11:46 AM   #19
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I will read it why do you think it failed after disconnection the battery overnight ?
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Old 10-16-2006, 11:49 AM   #20
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I read that article before but does it apply to a 98 Bonnie ? It sounds like after removing the glove box you can just reach in there my rod is buried behind that big brace behind the glove box ??? This said 1993 were they different ?
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