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94 Ls400 Hiccup On Hard Acceleration


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Thanks in advance for your help.........I have a 94 LS400 that hesitates on hard acceleration. When I put the hammer down it feels like the tranny is slipping, but I know it is not the tranny.....just a bunch of hiccups. Any Ideas what this could be??? Really not sure how to explain, except that it takes off smoothly and then gets jerky (the tranny is not shifting gears when this happens).

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are the rpms raising up higher than normal when flooring the car or is it jerking roms with it. If the rpms move with the jerk then it is an engine problem if the rpms keep raising and not moving with the jerk then it is slipping . Have you checked the intake hose for rips,holes or cracks

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