Question about 1991 Honda Accord

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1989 honda cant find diagnortic port

I m looking for the diagnostis port

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Your car does not have one.

Posted on Sep 07, 2008

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I put my 1989 Honda Prelude engine (auto) into a 1988 shell with manual transmission, and now my revs stay high only when driving and changing gears. Was wondering if it is a vacuum hose issue and how


may need to swap the computer also.. manual computer is different..but yes.. be looking into any vacuum leaks..block off any open ports you find..

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Honda Prelude 1989


well, there has to be a leak somewhere, broski.

Because you wouldn't be smelling fuel inside the car if there weren't.

I'd look somewhere around the fuel pump housing and work my way to the front of the car, personally.

chances are you're getting close to the leak if the fuel odor is getting stronger.

Aug 10, 2008 | 1989 Honda Prelude

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