Re: 2003 Accord 4-cyl auto problems.
 

Dave Kelsen wrote:

>
> Thanks, rj and jim. I will look in to changing the switch, and see if
> it clears up the first two problems. I will also look and see what I
> should replace with respect to a 'tune-up'. The car has spoiled me,
> needing pretty much just oil changes (OK, a couple of other things, but
> not many) up to here, at 107,000 miles.
>


If you are at 107k miles on the original spark plugs I would sure start
by changing them. NGK or Denso Iridium plugs are my first choice for
modern Hondas.

The air filter is also an obvious thing to check for performance and
economy problems.

In theory if something like the O2 sensor was going bad then the check
engine light should come on, but I have seen some cars with a sluggish
O2 sensor which effected emissions but wasn't bad enough to set off the
check engine light.

John