1999 Honda Odyssey with 200k miles on 1999 Honda Odyssey

code po740 - tccd solanoid circut & code po420 cat. The cat has been change three times with an after market unit yet used all honda seals, bolts & connection parts. Car is shifting rough lately. After running on the highway, it runs great.

by in Lagrangeville, NY on September 08, 2010
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1 answer
ANSWER by , September 08, 2010
could be the converter clutch worn out with the mileage. nedd a diag to confirm you cannot use aftermarket cats on hondas, only oem if you want it right. Roy