2001 Jeep Cherokee 2001 Jeep grand cheerokee

BABYHOME

MEMBER
2001 JEEP CHEROKEE
V8
AWD
AUTOMATIC
93,000 MILES

Jeep misses when started and when u drive it. It straightens out at about 50mph. Doesnt do this all the time. But does it when goin up hill or try to give it gas. What could be the problem

Tuesday, January 26th, 2010 AT 12:29 AM

1 Reply

RASMATAZ

MECHANIC
75,992 POSTS

Check and test all the following listed below:

Oxygen sensor
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
Cap and rotor

Note:If it doesn't apply disregard.