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thanks for the input I would consider this normal if it had not done this at all for the first few weeks that I owned the vehicle and it does it all the way down the grade. If it does not do the hesitation, you see the rpm decrease going down the grade then pick back up to the previous level...

I recently purchased an 01 ST with 49kK miles and I love the vechile but have encountered a problem that has not been resolved. I installed a K & N FIPK on the vehicle in late Feb to help with the gas milage of the 4.0. Then in early March it developed what can best be described as a stumble...