2000 Civic Misfire Even After Tune Up?

I've got a 2000 Civic. At high RPMs (just prior to shifting or highway
speeds) it misfires...sometimes a little and sometimes alot. OBD codes
show misfires in each cylinder. (Not alot of helpful info!) I
replaced plugs, wires, cap, rotor, and PCV valve. It still misses and
the OBD light is back on. I'm thinking that maybe the ignition module
is faulty.

Any other ideas out there?? THanks!!!

--Jeff

wrote:
> I've got a 2000 Civic. At high RPMs (just prior to shifting or highway
> speeds) it misfires...sometimes a little and sometimes alot. OBD codes
> show misfires in each cylinder. (Not alot of helpful info!) I
> replaced plugs, wires, cap, rotor, and PCV valve. It still misses and
> the OBD light is back on. I'm thinking that maybe the ignition module
> is faulty.
>
> Any other ideas out there?? THanks!!!
>
> --Jeff
>
-------------------------------------

What are all the actual CODES? I'm guessing you might also have a
"catalyst below efficiency threshold' code too.

What's the mileage and when did you last run a bottle of injector
cleaner (or gasohol) through it?

'Curly'

Oops!! Too late! Used my OBD2 scanner and cleared them. But it was
misfire codes, not catalytic converter codes.

Not a bad idea on the injector cleaner. But I'm still thinking its
ignition, not fuel.

The Civic has 70K miles.

--Jeff

motsco_ wrote:
> wrote:
> > I've got a 2000 Civic. At high RPMs (just prior to shifting or highway
> > speeds) it misfires...sometimes a little and sometimes alot. OBD codes
> > show misfires in each cylinder. (Not alot of helpful info!) I
> > replaced plugs, wires, cap, rotor, and PCV valve. It still misses and
> > the OBD light is back on. I'm thinking that maybe the ignition module
> > is faulty.
> >
> > Any other ideas out there?? THanks!!!
> >
> > --Jeff
> >
> -------------------------------------
>
> What are all the actual CODES? I'm guessing you might also have a
> "catalyst below efficiency threshold' code too.
>
> What's the mileage and when did you last run a bottle of injector
> cleaner (or gasohol) through it?
>
> 'Curly'

wrote in
oups.com:

> Oops!! Too late! Used my OBD2 scanner and cleared them. But it was
> misfire codes, not catalytic converter codes.
>
> Not a bad idea on the injector cleaner. But I'm still thinking its
> ignition, not fuel.



Buddy, you don't know ZIP. And neither does anybody else at this point.

Clearing the codes was not a bright idea. Wait 'til they come back,
read and record them, then report back here.

***BE PRECISE***. Help us to help you.


--
TeGGeR®

The Unofficial Honda/Acura FAQ
www.tegger.com/hondafaq/

wrote:

> I've got a 2000 Civic. At high RPMs (just prior to shifting or highway
> speeds) it misfires...sometimes a little and sometimes alot. OBD codes
> show misfires in each cylinder. (Not alot of helpful info!) I
> replaced plugs, wires, cap, rotor, and PCV valve. It still misses and
> the OBD light is back on. I'm thinking that maybe the ignition module
> is faulty.
>
> Any other ideas out there?? THanks!!!
>
> --Jeff

Are the new parts OEM or aftermarket?