Question about 1997 Honda Odyssey
97 Honda Odyssey Auto transmission downshifts but redlines and won't up shift until gas peddle is lifted to far. Engine spark pings under partial load. Gas vapor purge problem code.
Try checking your timing to solve the ping problem, your timing might be too far advanced. For the downshifting problem, I have this same issue on my odyssey, On the top of your efi manifold you will see 2 wires that control your throttle, One of them extends to the transmission and basically lets it know when you are pressing firmly on your gas pedal, telling it to downshift. I would adjust it so the cable has some more slack in it, therefore requiring a harder press on the pedal before downshift, and hopefully a sooner upshift. You can also slightly adjust idling problems if the van is running high while in park or drive while sitting. As for the gas vapor purge code, I would first try replacing the egr valve, its only a couple bucks and takes no more than 5 minutes.
Posted on Aug 27, 2011
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Posted on Jan 02, 2017
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