I find that the transmission is generally slow to kick down, but it is especially slow at higher speeds. Is this normal? I also am experiencing what appears to be irregular fuel pressure. At times it is sluggish, and the back pressure on the accelerator is noticably less. At other times, it is very responsive. Changing the fuel filter and using fuel system cleaners has helped, but it remains an intermittent problem. What should I try next?
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