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Satyr of the Midwest
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17,747 Posts
I know that little "tip-in" problem all too well. On my rig, it was EGR-related. Replacing the EVP helped out more than anything, but I can still feel it if the engine's not completely warmed up. Pretty sure it comes down to bad mapping and bumped timing, but I'm still thinking of making a restrictor plate for it.

Pull out your Haynes manual & DVOM, and test your EVP sensor; it's the white plastic piece on top of the EGR valve, with three small ears and an electrical connector. When you're watching the resistance change, make SURE that it's not decreasing THEN increasing when the rod is moved just off-rest. That's the most-common failure I see in these bastard-design sensors. They just don't last, in my experience.

Also might want to check that TPS. :D
 
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