91 lebaron losing power

My 91 LeBaron,6 cyl, loses power intermittently on acceleration and steady
speeds.I have had a major tune up, replaced fuel filter, map sensor, pvc,
& air filter replaced, as well as cleaned fuel tank. Veh never dies.
Sometimes I can stop, drop in neutral and rev eng and it will run like its
supposed to. Otherwise it will eventually correct its self. Diagnostic
center does not display any lites. Any ideas???

 

To check the computer codes:

With the engine off, switch the ignition key on-off-on-off-on,
leaving it "ON". Do not
go to "start", just "on" during this procedure.

Watch the "Check Engine" or "Power Loss" light. It will turn on, then go
off, then will begin to flash-out any trouble codes that have been stored.
For instance, if it flashes:

flash <pause> flash flash
<long pause>
flash flash flash <pause> flash flash flash flash flash
<long pause>
flash flash flash flash flash <pause> flash flash flash flash flash

Then you have a 12 (one flash followed by two) a 35 (three and five) and a
55 (five and five). 55 means "end of codes" or, if by itself, "No codes
stored. Check the codes and report what you find.

 

Hello,

I have a 92 Lebaron that does the same thing described here.
I checked the codes and i got either a 22 or 23
it was kind of hard to tell it came on right when i turned the key to on, and shut off
then blinked once(long pause) then blinked twice(pause) blinked twice(pause) blinked once(pause) then flashed 55

any ideas which code it was and what it could mean?