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  1. Used Seafoam to clean Intake --- Now transmission upshifts VERY slow with loud whine

    4th. Generation Chrysler Minivans: 2001-2007
    Proper simple maintenance is so important for these vans!!!!!! Turns out my catalytic converter was getting glowing red hot and is very close to the tranny. Rebuild shop said the damage from the heat was "very excessive" and wanted to know why. Luckily they investigated before rebuilding the...
  2. Used Seafoam to clean Intake --- Now transmission upshifts VERY slow with loud whine

    4th. Generation Chrysler Minivans: 2001-2007
    Engine now runs fantastic after changing plugs and wires. The engine ran seemingly well until I used the Seafoam which caused the the misfire code/ hesitation because of original plugs still in use at 85k (gaps on all plugs were huge-about double) Transmission use to run fantastic until I used...
  3. Used Seafoam to clean Intake --- Now transmission upshifts VERY slow with loud whine

    4th. Generation Chrysler Minivans: 2001-2007
    I disconnected a vacuum line from my 2003 T&C, reved 3.8 Engine to 2k RPM and let the intake suck in Seafoam to clean the Engine. Engine started to misfire and hesitate at idle and Tranny immediately upshifted VERY slow with a loud whining noise. I changed plugs and wires and the engine...
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