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Old 07-09-2010, 05:58 AM   #1
tim21391
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Join Date: Jul 2007
Location: Salina, Kansas
Posts: 1,998
what could be hissing?

i noticed on my truck that there is a hissing under the dash of the passenger side..you cant hear it while its running but as soon as you shut the truck off it goes on for about 2-3 seconds then dies off... truck runs fine but what could it be?
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1972 C-10...402/400..flowmaster 40 series
1967 Mustang 347 stroker/C-4
1966 Mustang 289/3-speed
2013 Mustang V6/6speed w/300 ponies
I may be 23, but i sure do knows 67-72s are sexy!
Its not MPG its smiles per gallon!
build started 11/25/08
build thread: http://67-72chevytrucks.com/vboard/s....php?p=2993796
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