1999 Chevy Cavalier 99 chev Cavalier

MICHAEL1989

MEMBER
1999 CHEVROLET CAVALIER
4 CYL
2WD
AUTOMATIC
119,000 MILES

I have a 99 chev cavalier 2.2 non california emissions
I'm having problem with exceliration to a shop they told
me it was a bad cat converter toulk it to a muffalure shop they said noth wrong with cat car had chk eng light it pulled up code's po141x2 and po137x1 they told me the o2 sensor was bad they replaced it. And that did not fix the problem they told me to chk the fuel filter so I had it changed and no resolve.
then took the car to jd buyrider were I bought it and they took off muffller assemble no resolve did a compression chk it was ok
ched the spark plugs and wires no resolve

1 Reply

RASMATAZ

MECHANIC
75,992 POSTS

Dirty fuel injectors (cleaning the injectors often fixes this).
Bad MAP (manifold absolute pressure) sensor
Bad TPS (throttle position) sensor
Bad or dirty MAF (mass airflow) sensor
Low fuel pressure (leaky fuel pressure regulator or weak fuel pump)
Vacuum leaks (intake manifold, vacuum hoses, throttle body, EGR valve)
Bad gasoline (fuel contaminated with water or too much alcohol)

Sometimes, what feels like a hesitation is actually ignition misfire rather than lean misfire. The causes of ignition misfire may include:

Dirty or worn spark plugs
Bad plug wires
Weak ignition coil
Wet plug wires