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The EHA (electro hydraulic acutator) is a pressure regulating device that adjusts the air / fuel mixture. It is driven by the Lambda computer. It is simple to change. Remove the two screws holding it on and replace the two small O rings that seal it or replace the entire unit. You should not have to disconnect any fuel lines to change it. Be aware that fuel may squirt when you loosten the screws.
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I got too many cars!! Insurance eats me alive. Dave
78 Corvette Stingray - 3k
82 242 Turbo Volvo - Manual - 270k
86 300e 5 speed manual - 210k
87 420sel - 240k
89 560sl - 78k
91 420sel - 205k
91 560sel - 85k
94 GMC Suburban - 90k
97 Harley Davidson Heritage Softail - 25k
00 GMC Silverado 1 ton 30k
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