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Re: vacuum hose goes nowhere 2003 s10 xtreme
The hose plugs into the vacuum reservoir there should be a check valve inline and tees into the conduit that goes under the dash and drives the mode doors for your HVAC system. Can you change the mode inside (air delivery) from floor to vent to defrost okay? If not, your vacuum is not available. If hose is just sucking air, that is bad, in that you create a vacuum leak into your intake which make you run leaner.
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Automotive A/C Engineer with:
'99 IH 4700 Toy Hauler
(2) '95 GEO Prizms both maroon
'99 GMC Yukon
'95 Chev 3500, 454 Dually Crew Cab- 145k miles-
Wife's Camel trailer puller.
'94 Astro- 370k miles
'94 Firebird Formula- 5.7L 180k miles- gone-
'92 Chevy Lumina Van 3.8L 264k
'86 GMC S-15 - 2.8L 154k
'87 Buick Park Ave . 187k
'86 Buick Park Ave 3.8L 199k miles- gone
'77 Chevy Vega- 2.5L 175k miles gone but not forgotten
'68 Camaro 396 4 spd RS/SS -72k miles-
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