05-04-2010, 02:20 am
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 Join Date: Nov 2006 Location: Ann Arbor, MI Posts: 640
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Thanked 32 Times in 32 Posts
|  Stuck HVAC flapper doors.
Anyone know of a schematic/fix to get these puppies unjammed? I don't even know where to look for them. My AC is just trickling out and everything else has been replaced, making the doors and possibly their vacuum hoses, the next suspect. | ||||||||||||||||||||
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1985 Z51 4+3 trans rebuilt 5.7 TPI,(.10 over) w/ CompCams 12-262-4, 52MM Throttlebody, underdrive pulleys, reworked heads, Hypertech Thermomaster chip, & cat back exhaust
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05-04-2010, 07:52 am
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| GM World Class Certified Technician  Join Date: Nov 2006 Location: New Haven Ct Posts: 5,141
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Hi there, I have been digging for the diagrams but have yet to find them. I have one more source, lets see what I get back. Alllthebest, c4c5 | ||||||||||||||||||||
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05-04-2010, 10:08 am
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| Corvette Enthusiast Join Date: Feb 2010 Posts: 63
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Hey Chuck, If you have a vacume pump, check to verify that there's plenty of vacume to the controler on the dash. Check that little black vacume delay/check valve that comes from the intake plenum port, nearest distributor and above the egr switch,That hose that comes off the side of that delay valve, tends to leak, and also check the other hose that comes off the delay, it goes to the vacume canister in the L/H wheel well. As I think back, I remember you said something about an idle problem. This could well be the source. I hope this helps.. | ||||||||||||||||||||
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| The Following User Says Thank You to lovehatec4 For This Useful Post: | ChuckG (05-05-2010) |
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05-05-2010, 02:07 am
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| Join Date: Nov 2006 Location: Ann Arbor, MI Posts: 640
Thanks: 28
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I'll give it a look tomorrow. Thanks! A pump might be a good purchase... How goes the radio wars? | ||||||||||||||||||||
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1985 Z51 4+3 trans rebuilt 5.7 TPI,(.10 over) w/ CompCams 12-262-4, 52MM Throttlebody, underdrive pulleys, reworked heads, Hypertech Thermomaster chip, & cat back exhaust
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