dbc2065 Posted March 27, 2017 Report Share Posted March 27, 2017 Fisher have a question concerning acp vacuum connection on ecc how is that connection removed see a small center nut FSM doesn't really break down. have any dealing with it have programmer problems. Link to comment Share on other sites More sharing options...
rockfangd Posted March 27, 2017 Report Share Posted March 27, 2017 Could you please maybe reword your post. I cannot understand it. I assume you are talking about the vacuum lines to the HVAC programmer but what info are you looking for related to it? There is a small nut in the center that you carefully unscrew off the plastic stud, then you carefully wiggle off the clear plug with the lines on it. GM FAN FOREVER Nice, clean, luxury= fine automobile Link to comment Share on other sites More sharing options...
dbc2065 Posted March 27, 2017 Author Report Share Posted March 27, 2017 Apologies you answer my question. If set my temp controls at auto 90 or auto 60 works as should however if lower to auto 85 or auto 65 air temperature isn't right. No trouble codes thinking blend door vacuum leak actuators Link to comment Share on other sites More sharing options...
rockfangd Posted March 28, 2017 Report Share Posted March 28, 2017 I might suggest you try unhooking the battery for a few minutes. Then hook it up turn the ignition on and dont touch anything for 1 minute. The actuators should learn their positions and it usually does it within 1 minute. If you touch a button though it aborts and must be done all over. I have had great luck doing that in the past. The only thing the programmer does IIRC is to change the position of where the air is put out. (ie defroster, floor, dash) GM FAN FOREVER Nice, clean, luxury= fine automobile Link to comment Share on other sites More sharing options...
dbc2065 Posted March 28, 2017 Author Report Share Posted March 28, 2017 Appreciate you once again will try your suggestions first. However remove center nut vacuum connection from junk yard unit pickup plug just won't lift off just don't break anything. No acp codes. Sometimes it work right. have other small problem I've noticed my speedometer is off by 4 miles per hour change out speed sensor also replaced left front wheel bearing hub. No codes What's your thought on that? Speed buffer perhaps? other wise car been great I'm living in North Dakota she has stated up in -50 weather found grill with center crest finally I've made lots of progress with her even my heated windshield option works. well appreciate everyone Link to comment Share on other sites More sharing options...
dbc2065 Posted March 28, 2017 Author Report Share Posted March 28, 2017 Update found IS08 value wasn't set for North American set 08 in override display value causing speed to read 7 percent more then actually speed FSM page 8c1-37 check it following repair tree sure enough was my problem. Other suggestions you gave no good didn't help problem Air flow position irc from temp settings matching positions of air flow defrost floor center vent. Going to double check vacuum grounds and connection have spare from junk yard if that don't work actuators direction. Link to comment Share on other sites More sharing options...
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