02 cavalier 2.2l dohc

Asked by Rodney Sep 15, 2017 at 06:41 AM about the 2002 Chevrolet Cavalier

Question type: Maintenance & Repair

It struggles at take of wants to big down at about
3k to 4k rpm let off gas n then it's gift but very slow
to get up to speed won't go past 60 after long
straight away or down hill struggles up hill can
drop about 15mph before reaches to of hill in
Florida not much hills and reads codes P0172 fuel
system rich bank 1 and P0141 bank 1 sensor 2
heater circuit malfunction this was after 3 hr drive
also at times read O2 sensor code forgot the code
but bank 1 sensor 2 as well changed plug and air
filter is fine also pushes air out of hose from valve
cover to air intake and push air out when I take oil
cap off valve cover

1 Answer
38,925

beatupchevy answered 6 years ago

the problems those codes are from can clog up the catalytic converter and may be part of the problem , an injector may be stuck open or there may be a vacuum leak . See if the pcv is working , check egr function

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