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broken car runs cleaner
I thought this was kind of interesting, I was working on an '88 GMC G2500 , 5.7L TBI. It many problems, one of witch was an AIR valve not fully switching from upstream to dump. With AIR disconnected the #s were dead on average - OK every-things normal. With AI... Login to read more. 
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| Engine | 5.7 L |
| Trans | 4-speed Automatic (Electronic) |
Vehicle Data
1988 GMC G2500 Vandura 5.7L
| Engine | 5.7 L |
| Trans | 4-speed Automatic (Electronic) |
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